WO2005000783A9 - 芳香族炭酸エステルの製造方法 - Google Patents
芳香族炭酸エステルの製造方法Info
- Publication number
- WO2005000783A9 WO2005000783A9 PCT/JP2004/009383 JP2004009383W WO2005000783A9 WO 2005000783 A9 WO2005000783 A9 WO 2005000783A9 JP 2004009383 W JP2004009383 W JP 2004009383W WO 2005000783 A9 WO2005000783 A9 WO 2005000783A9
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- carbonate
- group
- isomer
- carbon atoms
- reaction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C68/00—Preparation of esters of carbonic or haloformic acids
- C07C68/06—Preparation of esters of carbonic or haloformic acids from organic carbonates
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C68/00—Preparation of esters of carbonic or haloformic acids
- C07C68/04—Preparation of esters of carbonic or haloformic acids from carbon dioxide or inorganic carbonates
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/96—Esters of carbonic or haloformic acids
Definitions
- the present invention relates to a method for producing an aromatic carbonate. More specifically, the present invention relates to a method for producing an aromatic carbonate, comprising the steps of: (1) reacting an organometallic compound with carbon dioxide to form a reaction mixture containing dialkyl carbonate formed by the reaction; (2) separating the dialkyl carbonate from the reaction mixture to obtain a residue, and performing the following steps (3) and (4) in that order or in reverse order, or partially or wholly And (3) reacting the residual liquid with alcohol to form at least one organic metal compound and water, and removing the water from the organometallic compound. (4) Reacting the dialkyl carbonate separated in step (2) with an aromatic hydroxy compound to obtain an aromatic carbonate ester.
- the method of the present invention does not use toxic substances, does not generate corrosive substances, has little by-products, and can recycle intermediate products, so that it is environmentally friendly, simple, and easy to use. It is possible to efficiently produce aromatic carbonates with high purity.
- Conventional technology does not use toxic substances, does not generate corrosive substances, has little by-products, and can recycle intermediate products, so that it is environmentally friendly, simple, and easy to use. It is possible to efficiently produce aromatic carbonates with high purity.
- Aromatic carbonic esters are widely used as a source of carbonyl in raw materials for polycarbonates, isocyanates, and pharmaceuticals, and an inexpensive production method has been desired.
- Interfacial polymerization method (a method in which phosgene and bisphenols are polymerized at the interface between the two phases of di- ⁇ -me Z and water in the presence of the appropriate chlorine acceptor),
- Patent Document 1 A method for producing phenyl silicate using phosgene as a carbonyl source (for example, see Patent Document 1)
- Method 1) includes an aqueous solution method in which phosgene is introduced into an aqueous metal phenoxide solution, and an interfacial method using an organic solvent-water two-phase system. There is a gas phase method in which phenol and phosgene are reacted in the gas phase, and in each case, an aromatic carbonate can be easily obtained. Careful handling is required for handling such as transportation and storage, and it costs a great deal to maintain and maintain the manufacturing equipment and ensure safety. Furthermore, in method 1), corrosive
- Method 2) is an oxidative luponylation method in which carbon monoxide is used as the hydroxyl group source to produce an aromatic carbonate from oxygen and an aromatic hydroxy compound.
- the carbon monoxide used in method 2) is highly toxic, requires careful attention in transportation and handling, and requires a great deal of cost for the maintenance and management of manufacturing equipment for safe production.
- method 2) chlorine or a chlorine-containing compound is used as a part of the catalyst or as a cocatalyst, and therefore, as in the above method 1) using phosgene, the chlorine to diphenyl carbonate is used. Contamination of contained compounds is inevitable. Furthermore, in method 2), expensive palladium is used as a catalyst, but the recovery of palladium is also difficult, resulting in a very expensive and complicated process.
- the method 2) also has very serious problems such as toxicity of raw materials, corrosiveness due to chlorine, presence of chlorine-containing impurities in the generated aromatic carbonate, and large production cost.
- dimethyl alcohol is obtained by oxidative reaction from carbon monoxide, oxygen and methyl to obtain dimethyl carbonate, and dimethyl carbonate and aromatic hydride are obtained.
- ⁇ There is a method of obtaining an aromatic ester by reacting with a xy compound.
- the dimethyl silicate is required to be used.
- the method 3) is a method of producing oxalic acid using carbon monoxide as a raw material and then producing diaryl carbonate by a de-C C reaction.
- the carbonated carbonate obtained contains a large amount of impurities such as franc-based impurities and chlorine-containing compounds derived from the raw material system, and is obtained by directly using the carbonated carbon without purification. Carbonate is colored yellow.Therefore, it is necessary to add a large number of steps to remove impurities in order to refine the obtained carbonate.
- Patent Document 4 (For example, Patent Document 4) o
- Method 4 will be described.
- urea is used as a liquid source, and is reacted with alcohol to obtain alkyl carbonate.
- dialkyl silicate is reacted with an aromatic hydroxy compound to form an aromatic ester carbonate.
- the method is an improved method in terms of using low-toxicity urea as a raw material, but in the reaction for producing dialkyl silicate from urea and alcohol, arono and ester esters are used. Inevitably, the by-products of the acid are inevitable, and the selectivity of the silicate is low. ⁇ The process is expensive. Also, the alkyl carbonate as an intermediate, and the mate and the dimethyl carbonate are azeotropic.
- step 5 carbon dioxide is used as a power source, and is reacted with carbon monoxide and ethylenoxide to obtain a cyclic ester carbonate.
- an aromatic carbonate is obtained by reacting the alkyl oxyester obtained as described above with an aromatic compound or a hydroxy compound (for example, see Patent Document 6), which uses low-toxic and inexpensive carbon dioxide.
- an aromatic compound or a hydroxy compound for example, see Patent Document 6
- Ha Zhan ⁇ is excellent.
- the method 5 is a co-production process of dicarbonate and ethylene glycol, and it is very difficult to return the ethylene U-ethyl to ethylenoxide. A separate manufacturing process is required.
- the method 5) has the problem of necessity of the production process of ethylenoxide and the problem that the co-product, ethylen U, is not reusable.
- Patent document 1 Japanese patent 3 0 7 1 0 0 8
- Patent Document 2
- Patent Document 3 Japanese Patent Application Laid-Open No. 7-144 5 1 0 9
- Patent Literature 4 Japanese Patent 2002-4 7 2 5 1
- Patent Document 5 Japanese Patent Publication 20000 0 1 4 6 1
- Patent Document 6 Japanese Patent Application Laid-Open No. 9-4066-16
- Patent Literature 7 Japanese Patent Application Laid-Open No. 2000-1 ⁇ 2 4 7 5 1 9
- Patent Literature 8 German Patent No. 4 3 0 1 0 9
- Patent Document 9 Japanese Patent Laid-Open No. 2000-3-131629 Summary of the Invention
- the present invention has been developed to, and the method of the present invention has been reached.
- the method characterized in that the aromatic carbonate is obtained by the The problem was solved.
- the method of the present invention does not use any substances, does not generate corrosive substances, has few by-products, and can recycle intermediate products, so that it is environmentally preferable, simple and efficient. This makes it possible to produce aromatic carbonates with high purity.
- the present invention has been completed based on this finding.
- the intermediate product can be recycled and substantially contains carbon dioxide and aromatic hydrogen. 0 It produces only aromatic carbonate and water from a hydroxy compound, and is toxic to raw materials, corroded by chlorine-containing compounds, difficult to separate by-products and intermediates, and coproduct The implications of the generation of chlorine and the retention of chlorine-containing compounds in the generated aromatic carbonate were all solved.
- the present invention is not limited to the use of toxic substances and the generation of corrosive substances, but also the simple and efficient production of aromatic carbonates without the generation of large amounts of coproducts and by-products.
- the present invention is not limited to the use of toxic substances and the generation of corrosive substances, but also the simple and efficient production of aromatic carbonates without the generation of large amounts of coproducts and by-products.
- Figure 1 is an example of a schematic diagram of a process for producing an aromatic oxyester according to the present invention.
- FIG. 2 shows the process of the method for producing oxalic acid dial of the present invention.
- FIG. 3 shows the process (3) in the process of the present invention, the process for producing dibutyltin alkoxide, dioctyltin alkoxide ', and the process for distilling phenol and water by distillation.
- FIG. 4 is an example of a process P diagram relating to step (2) in the method of the present invention.
- FIG. 5 is an example of a process D diagram for step (4) in the method of the present invention.
- FIG. 6 is an example of a process P diagram relating to step (5) in the method of the present invention.
- FIG. 7 is an example of a flowchart showing a U-cycle of Arcoul in the method of the present invention.
- FIG. 8 is an example of a process diagram relating to the purification of oxalate in the method of the present invention.
- FIG. 9 is another example of a process chart for purifying oxalate in the method of the present invention.
- FIG. 10 is an example of a process diagram relating to the separation of phenol and dialkyl carbonate in the method of the present invention.
- FIG. 11 shows the results of the method of the present invention.
- FIG. 1 is a process diagram relating to a process for purifying alkaryl silicate
- FIG. 12 is an example of a process flow diagram relating to recycling of alkyl silicate in the method of the present invention.
- a method for producing an aromatic carbonate comprising:
- aromatic carbonate obtained in the step (4) is at least one selected from the group consisting of alkylaryl carbonate and diaryl carbonate. The method described in 1.
- step (3) the organometallic compound from which water has been removed is recycled in step (1).
- step (4) the alcohol produced together with the aromatic carbonate is subjected to helicopter recycling in step (3).
- step (4) the dialkyl carbonate recovered in step (4) is subjected to helicopter recycling in step (4).
- step (4) is alkylaryl carbonate, and the following step (5):
- step (5) is to recycle the dialkyl carbonate produced together with the ⁇ -diaryl silicate into the step (4).
- the amount of the organic metal compound used in step (1) is 10.
- step (1) is an organometallic compound having a metal-carbon bond.
- An organometallic compound having a metal-oxygen-carbon bond is selected from the group consisting of an organometallic compound represented by the following gd formula (1) and an organometallic compound represented by the following formula (2). ⁇ 1.
- M 1 represents a metal atom selected from the group consisting of elements of Group 4 and Group 14 of the periodic table excluding silicon; R 1 and R 2 are each independently i ⁇ dog or branched ash number 1
- cycloalkyl groups having 5 to 12 ash, linear or branched alkenyl having 2 to 12 ash, 4ni to (3 ⁇ 4 * substituted or substituted carbon number of 6 to 19 And a linear or branched alkyl having 1 to 14 carbon atoms and a cycloalkyl having 5 to 14 carbon atoms, and an ash system comprising an alkyl force selected from the group consisting of 7 to 14 carbon atoms.
- 20 aralkyls and aralkyls are substituted or substituted ash yarns with 6 to 20 aryls;
- R 3 and R 4 are each independently a linear or branched ash number 1
- a cycloalkyl having 4 to 7 carbon atoms which represents an aralkyl group having 7 to 20 carbon atoms;
- M 2 and M 3 are each independently group 4 of the Periodic Table, except for silicon
- R 5 , R 6 , R 7 and R 8 are each independently a linear or branched alkyl group having 1 to 12 carbon atoms, a cycloalkyl group having 5 to 12 carbon atoms, linear or branched Alkyl group having 2 to 12 carbon atoms, unsubstituted or substituted aryl having 6 to 19 carbon atoms and chain or branched alkyl having 1 to 14 carbon atoms and carbon number
- 5 represents an aralkyl group having 7 to 20 carbon atoms, or an unsubstituted or substituted aryl group having 6 to 20 carbon atoms, which is an alkyl selected from the group consisting of cycloalkyl of 14;
- R 9 and R 1 D are each independently a straight-chain or branched carbon number
- 112 alkyl group cycloalkyl group having 5 to 12 carbon atoms, linear or branched alkenyl group having 2 to 12 carbon atoms, or unsubstituted or substituted aryl group having 6 to 19 carbon atoms
- aralkyl groups having 7 to 20 carbon atoms, each of which is selected from the group consisting of alkyl and linear or branched alkyl having 1 to 14 carbon atoms and cycloalkyl having 5 to 14 carbon atoms.
- e, f, g and h are integers from 0 to 2
- e + f 0 to 2
- g + h 0 to 2
- i and j are integers from 1 to 3
- the alcohol used in step (3) is a linear or branched alkylalkyl having a C12 alkyl group, or a cycloalkyl having a C12 cycloalkyl group.
- step (3) The method according to any one of the above item 120, characterized in that the allyl used in step (3) has a higher boiling point than water.
- 2-Methyl-1 monopropanol Alkyl alcohol having a linear or branched alkenyl group having 5 12 carbon atoms, and aralkyl having a linear or branched alkenyl group having 4 12 carbon atoms At least one selected from the group of
- valve used in step (3) has a lower boiling point than the aromatic hydroxy compound used in step (4).
- the organometallic compound is used in at least one form selected from the group consisting of a monomer, an oligomer, a polymer, and an aggregate.
- the organometallic compound used in the step (1) is a compound produced from an organic side and a compound.
- the amount of the aromatic hydroxy compound used in the step (4) should be 0.1 to 100 times the stoichiometric amount to the dialkyl carbonate used in the step (4).
- Ar represents an aromatic group having 5 to 30 carbon atoms.
- Aromatic head in alcohol used in step 3 The total content of the oxy compound and the carboxylic acid group-containing compound is 10
- Aromatic carbonate produced by the method according to any one of the above items 1 to 34 isotic carbonate produced by the method according to any one of the above items 1 to 34
- the method of the present invention includes the following four steps:
- the aromatic alkyl carbonate is obtained by reacting the dialkyl carbonate separated in the step (2) with the aromatic hydroxy compound.
- the steps (3) and (4) after the steps (1) and (2) are performed in this order, the steps (1) and (2) are performed in the same or reverse order, or partially or wholly simultaneously. If steps (3) and (4) are performed in that order or in reverse order, steps (3) and (4) may be performed partially or wholly simultaneously. Steps (3) and (4) are performed using different apparatuses.
- step (1) a reaction represented by the following formula (6) is performed.
- the co 2 adduct of the organometallic compound Ri by the reaction of an organometallic compound with carbon monoxide ⁇
- step (3) the operation represented by the following equation (7) is performed. That is, dialkyl carbonate is separated from the reaction mixture obtained in step (1) to obtain a residual liquid containing a metal.
- a reaction represented by the following formula (8) ie, a residual liquid (a component containing a metal) and alcohol, and at least one kind of organometallic compound and water are formed) Anti-heart to remove the water from the organic gold compound.
- the organometallic compound from which water has been removed is removed. It is preferable to recycle (1).
- step (4) the alkyl carbonate is reacted with an aromatic hydroxy compound to obtain an aromatic acrylate ester.
- an aromatic hydroxy compound usually, dialkyl carbonate and aromatic hydride
- Reaction m with the oxy compound produces alkyl aryl carbonate and alcohol (see de e-self formula (9)).
- a catalyst is used to react dialkyl carbonate with alcohol. And out of the system, it can.
- the produced alkyl carbonate reacts with the aromatic hydroxy compound to produce diaryl carbonate and alcohol (see the following formula (10)).
- dialkyl carbonate and dialkyl carbonate are produced from the alkyl acrylate by a disproportionation reaction (see the following formula (11)). This reaction can be carried out, for example, using a catalyst while the produced alkyl acrylate is taken out of the system.
- step (4) by controlling the reaction conditions, it is possible to mainly obtain an alkyl carbonate as an aromatic carbonate ester, and to obtain an aromatic carbonate ester. It is also possible to obtain diaryl carbonate, or to obtain mainly a mixture of alkylaryl carbonate and oxalate.
- alkylalkylaryl and alcohol are produced by the reaction between the dialkyl carbonate and the aromatic hydroxy compound.
- this alcohol is U-cycled to step (3).
- dialkyl carbonate can be produced by the disproportionation reaction described above, but some of the dialkyl silicate used for the reaction with the aromatic hydroxy compound is also used. It remains unreacted.
- these alkyl carbonates i.e., the generated alkyl carbonate and unreacted alkyl silicate
- the aromatic carbonate obtained in the above is an alkyl carbonate
- reaction in step (5) is a reaction represented by reaction formula (11), that is, the disproportionation of alkaryl oxalate results in the reaction of dicarbonate U
- step (1) when the method of the present invention includes step (5), step (1)
- the organometallic compound and / or compound formed during the process is recycled to step (1) and step (3), respectively.
- raw materials only sulfur dioxide and an aromatic hydroxy compound are used as the raw materials, and aromatic acrylate and water are extracted as products. 1
- This method is completely different from b) a method for obtaining dialkyl carbonate using an organic dehydrating agent, and c) a method for obtaining dialkyl carbonate using a solid dehydrating agent.
- Method b) is a method for producing dialkyl carbonate instead of aromatic stell carbonate, which will be described for reference.
- the method b) according to the following formula (4), acrylate and water are formed, and the water is used as an organic dehydrating agent (acetal) in the reaction system by utilizing the equilibrium reaction of the following formula (5).
- the reaction is to increase the dialkyl carbonate concentration. Therefore, it is understood that the method b) is a reaction for producing an equimolar amount of an organic dehydrating agent with the dialkyl carbonate to be produced, and is represented by the following formula (19). Cat. MeOCOMe
- Equation (19) is all the same as equation (12). Therefore, the method b) is completely different from the method of the present invention described above.
- the aromatic carboxylic acid ester can be obtained by reacting the alkyl silicate obtained in the method b) with an aromatic hydrogen D-oxy compound. If it is used, it is presumed that it is used for regeneration of the organic dehydrating agent, and this point is completely different from the method of the present invention.
- the method c) is a method for producing dialkyl silicate, not an aromatic carbonate, as in the above method b), but the reaction in the force method C) described for reference is an equilibrium of the following formula (20) Alcohol + co 2 dicarbonate + water (20) By reacting or adsorbing the water generated by this reaction with an inorganic dehydrating agent, the equilibrium can be shifted to the production system side, whereby the yield of dialkyl carbonate can be increased.
- equation (20) is completely different from equation (12). Therefore, the method is completely different from the above-mentioned method of the present invention.
- an aromatic carbonate can be obtained by reacting the dialkyl carbonate obtained in the method c) with an aromatic hydroxy compound, but the alcohol generated in this case is recycled. If used, it is presumed that the compound may be used as a raw material of the formula (20). In this respect, a compound used in the present invention which is completely different from the method of the present invention will be described.
- the organometallic compound used in step (1) of the method of the present invention is not particularly limited as long as it can react with carbon oxide to generate dialkyl carbonate.
- Organometallic compounds having a metal monooxygen-ash bond are preferred.
- an organometallic compound having an alkoxy group can be mentioned.
- the organometallic compound having a metal-oxygen-carbon bond is an organometallic compound represented by the following pi3 formula (1) and It is preferable to include at least one compound selected from the group consisting of the organometallic compounds represented by the formula (2).
- M 1 represents a metal atom selected from the group consisting of elements of Group 4 and Group 14 of the periodic table excluding silicon;
- R 1 and R 2 each independently represent a linear or branched carbon number 1
- Carbon number which is selected from the group consisting of alkanol and linear or branched alkyl having 1 to 14 carbon atoms and cycloalkyl having 5 to 14 carbon atoms? Represents an aralkyl group having up to 20 or an aryl group having 6 to 20 carbon atoms, which is substituted or substituted;
- R 3 and R 4 are each independently a linear or branched carbon number 1
- alkyl group having 1 to 12 carbon atoms a cycloalkyl group having 5 to 12 carbon atoms, a linear or branched alkenyl group having 2 to 12 carbon atoms, or an unsubstituted or substituted carbon atom having 6 to 19 carbon atoms.
- M 2 and M 3 each independently represent a metal atom selected from the group consisting of elements of Group 4 and Group 14 of the periodic table excluding silicon;
- R 5 , R 6 , R 7 and R 8 is each independently a linear or branched alkyl group having 1 to 12 carbon atoms, a cycloalkyl group having 5 to 12 ash atoms, a linear or branched alkenyl group having 2 to 12 carbon atoms.
- R 9 and R : 10 are each independently a linear or branched carbon number
- 1-1 2 alkyl group the number 5-1 2 a cycloalkyl group having a carbon: a linear or branched alkenyl group having 2-1 2 carbon atoms, or ⁇ is selected et or ⁇ U 1 ⁇ Le and it or branched C 1 -C 1-4 alkyl and ash prime 5 to 1 4 of consequent opening alkyl by Ri group consisting of C 6 -C 1-9 substituted Ashes made of Alkir? Represents up to 20 aralkyl groups; and
- the periodic table referred to in the present invention is the periodic table defined by the International Union of Pure and Applied Chemistry's Chemical Chemistry Nomenclature (1989).
- the organometallic compound can be used in at least one form from the group consisting of monomers, oligomers, polymers and conjugates.
- M 1 in the formula (1) and ⁇ 2 and ⁇ 3 in the formula (2) represent groups 4 and 4 of the periodic table excluding gay.
- R 1 and R 2 of the organometallic compound of formula (1) and R 5 , R 6 , R 7 and R 8 of the organometallic compound of formula (2) used in the present invention are methyl.
- Examples thereof include an aralkyl group having 7 to 20 carbon atoms such as X-ruethyl, and an aryl group having 6 to 20 carbon atoms such as xyl, tril, and naphthyl.
- these hydrocarbon groups may be substituted with a substituent that does not react with carbon dioxide or alcohol, for example, an alkoxy group, a dialkyl ano group, an alkoxy group, or may contain a polyester bond.
- It is preferably a lower alkyl group having 1 to 8 carbon atoms, more preferably a linear or branched alkyl group having 4 to 8 carbon atoms. Can also be used, but may reduce liquidity or impair productivity
- R 3 and R 4 of the organometallic compound of the formula (1) and R 9 and R 1 Q of the organic metal compound of the formula (2) are methyl, ethyl, propyl (each isomer). Body), butyl (each isomer), pentyl (each Sex), hexyl (each isomer), cyclopropyl cyc D-butyl, cyclopentyl, cyclopentyl, cyclohexyl, cyclo P hexenyl, methoxethyl, ethoxymethyl, etc.
- Ash number such as benzyl and phenylethyl 7 2
- the lower alkyl is an alkoxy group which forms an organometallic compound represented by the formula (1) or (2) and has a boiling point higher than that of water at normal pressure.
- -Methyl pill an organometallic compound having a straight-chain or branched alkyl group having 512 carbon atoms or a branched alkyl group having 412 carbon atoms.
- the boiling point of the alcohol corresponding to the alkyne group at normal pressure is determined in the step (4).
- Preferred examples are n-butyl, 2-methylpropyl, chain or branched alkyl with 5.8 atoms. Is the base.
- a particularly preferred example is the case of oxygen forming an oxygen-carbon bond.
- 2-methylpyr an alkyl selected from the group consisting of linear and branched carbon atoms having 56 carbon atoms;
- organometallic compound represented by the formula (1) Methoxy tin, tetraethoxy tin, tetrapropyl tin (each isomer), tetrabutyl tin (each isomer), tetra-pentoxy tin (each isomer), tetrahexyl tin (Each isomer), tetraheptyloxytin (each isomer), tetraoctyloxytin (each isomer), tetrano
- Roxitin (each isomer), N-Methoxyxetine, Tetramexititane, Tetraetoxytitane, Tetrap D , Tetrakis (2-ethyl-1-hexyloxy) thiocyanate, tetrabenzyloxytin, methoxy- ethoxylates, jetoxy-dipropoxy-tin (each isomer), dimethyloxy -Dihexyloxytin (each isomer), dimethyl-cimethoxy-tin, tin, dimethyl-one ethoxy-tin, methyl-dibutylpyroxyses (each isomer), dimethyl-dibutyloxy-tin (each isomer), Dimethyl-pentyloxy-tin (each isomer), dimethyl-dihexyloxy-tin (each isomer), dimethyl Petit Ruo Kishi tin to di (isomers),
- Examples of the organic gold compound represented by the formula (2) include 1, 1, and 3 3 -Tetramethyl- 1 3 --— Dimethyloxystannoxan, 1,1,3,3 —Tetramethyl-1,3 _Jetoxyinstannoxan, 1,13,3,3-Tetramethyl— 1,
- Nonyloxy-distannoxane (each isomer), 1, 1,
- alkoxydistannoxane such as oxane, aralkyloxydisoxane, and the like.
- organometallic compounds may be used alone, two or more of them may be used in combination, or another organometallic compound, and in some cases, a metal salt may be added. These organometallic compounds are sold It is also possible to use one that has been used, or use it by manufacturing it by a known method.
- an organometallic compound obtained from an organotin oxide and allyl can be mentioned.
- dibutyltin oxide having a chain alkoxy group from dibutyltin oxide and a long-chain alkenyl group is used.
- Dialkyltin alkoxides may be obtained from dialkyltins such as dichlorinated alkyltins and sodium alkalicolates, so that alkoxides can be obtained.
- the dialkyltin alkoxide may be obtained from the dialkyltin oxide and a lower alcohol by the method described in 04/0148480.
- the organometallic compound obtained from alcohol and dibutyltin oxide having a lower boiling point than water is mainly composed of the component represented by the formula (2) in many cases.
- the reaction product obtained by the method is distilled to obtain the organometallic compound represented by the formula (1) as a distillation component. You can also.
- the organometallic compound used in the present invention is at least selected from the group consisting of the organometallic compound represented by the formula (1) and the organometallic compound represented by the formula (2). It preferably contains one compound. Dialkyl carbonate can be obtained from the difference between the structure of the formula (1) and the structure of the formula (2). However, considering the production rate and the amount of production, the organic metal containing the structure of the formula (1) Compounds are preferred. It is more preferred that the content of the formula (1) be at least 50 mol%, expressed as the number of moles relative to the metal in the organometallic compound used.
- a second alcohol can be used in the step (1) if desired, and the third alcohol can be optionally used in the step (2).
- Files are available
- the same alcohol may be used as the third alcohol and the second alcohol may be the same as the first alcohol, or the first alcohol may be a different alcohol.
- alcohols that can be used as the third alcohol include straight or branched ash numbers 1 to: L2 Alkyl alcohol having an alkyl group, alkyl having 5 to 12 carbon atoms D cycloalkyl alcohol having an alkyl group, linear or branched alkyl alcohol having an alkyl group having 2 to 12 carbon atoms Alcohol, and unsubstituted or substituted carbon atoms of 6 to
- alcohols include methanol, ethanol, propanol, 2-propanol, 1-butanol,
- Multivalent rules can also be used.
- polyhydric alcohols include ethylen glycol, 1,3-butanepandiol,
- 2-P-D-diols, cyclohexanediols, cyclobenzene alcohols, etc. aliphatic polyhydric alcohols having 1 to 12 carbon atoms and alicyclic polyvalents having 5 to 12 carbon atoms Alcohol and aralkyl alcohol such as benzene alcohol.
- the boiling point at normal pressure be at least one of water.
- examples of such alcohols are 1-butanol, 2-methyl-1-propanol and straight-chain or branched alkyl alcohols having 5 to 12 carbon atoms, straight-chain or Examples of the branched alkenyl group having 4 to 12 carbon atoms include alkenyl alcohols, cycloalkyl alcohols, and aralkyl alcohols. More preferred alcohols are 1-butanol, 2-methyl-1-propanol, and linear or branched alkyl esters having 5 to 8 carbon atoms.
- ⁇ 1 is preferred, and more preferably, is a primary alcohol, 1 butyl alcohol, 2 methyl 1 propanol. Linear or branched alkyl with 5 to 6 ash Is
- the aromatic hydroxy compound used in step (4) of the method of the present invention will be described.
- the aromatic hydroxy compound is not particularly limited.
- a compound represented by the following formula (3) can be used.
- Ar represents an aromatic group having 55 to 30 carbon atoms.
- Examples of the aromatic hydroxy compound represented by the formula (3) include phenol and cresol ( Each isomer), xylenol (each isomer), trimethylphenol (each isomer), tetramethylphenol (each isomer), ethylphenol (each isomer), pulpirphenol -Ethyl (each isomer), butylphenol (each isomer), getylphenol (each isomer), methylethylphenol (each isomer), methylpropylphenol (each isomer), zipper Pyrphenol (each isomer), methylbutylphenol (each isomer), pentylphenol (each isomer), hexylphenol (each isomer), cyclohexylphenol ⁇ ⁇ (each isomer) Phenols such as methoxy phenol (each isomer) and ethoxy phenol (e
- each of R 1 R 12 , R 13 , and R 14 is independently a hydrogen atom, a lower alkyl group, a cycloalkyl group, an aryl group, or an aralkyl group; May be substituted with an atom or an alkoxy group.
- k is an integer of 3 to 11, and a hydrogen atom is It may be substituted with a kill group, alkenyl group, halogen atom, or the like.
- aromatic hydroxy compounds examples include naphthol (each isomer) and various substituted naphthols; hydr ' ⁇ xypyridine (each isomer), and hydroxy bear.
- Heteroaromatic hydrido compounds such as phosphorus (each isomer) and hydroxyquinoline (each isomer) are also included.
- aromatic hydroxy compounds those preferably used in the present invention are aromatic hydroxy compounds in which Ar is an aromatic having 6 to 10 carbon atoms. Preference is phenol
- the aromatic hydroxy compound is selected according to the intended aromatic carbonate ester.
- aromatic hydroxy using phenol in the production of diphenyl carbonate, cresolyl in the production of ditolyl carbonate, and naphthol in the production of naphthyl silicate.
- the compound may have an alkyl group, an octane, or the like as a substituent, or may be a heterocyclic compound such as hydroxypine.
- step (1) To the step (1) is an organic metal compound and carbon dioxide are reacted, which C o 2 adduct of the organometallic compound obtained Te cowpea the pyrolyzed to obtain a reaction mixture containing a dialkyl carbonate It is a process. Perform the reaction at (1), 1 ⁇ , hanging, 20 ° C (room temperature) or more. Preferred is ⁇ 20 ° C. to 300 ° C. In order to speed up the reaction, it is more preferable that the reaction time be between 80 and 200.
- the carbon monoxide used in the step (1) is reacted with the organic metal compound used in the step (1) in the range of 1 to 200 by using an organic metal compound.
- the presence of a large excess of carbon dioxide will further advance the equilibrium and cause the generation of free water, so a more preferred range is from 1 to 50.
- step (1) Necessary, and carbon dioxide is removed after step (1).
- a range of 1 to 20 is particularly preferred, as it loses a lot of carbon dioxide when burning.
- the amount of the organometallic compound used in step (1) depends on the chemical ft ft of the carbon dioxide.
- a range of 1 times is more preferred, and a range of 1/201 times is particularly preferred.
- the reaction pressure in 1) is set to 200 MPa from normal pressure and preferably 100 MPa to normal pressure, and the reaction is carried out while filling with carbon dioxide as necessary. Filling can be intermittent or continuous No
- reaction liquid The obtained reaction mixture (reaction liquid) is analyzed, and if the desired alkyl carbonate is obtained, the step (1) is completed.
- the stoichiometric amount of e is based on the amount of metal atoms of the organic metal compound. If 10% or more of dialkyl silicate is obtained, the reaction solution may be returned to normal pressure and the reaction solution may be taken out, or the reaction solution may be taken out directly from the reactor.
- step (1) other components may coexist.
- Other components that can be used effectively include those that function as dehydrating agents in the reaction system. This is because the anti-J-cardiac system in step (1) can be kept in a non-aqueous state.
- the dehydrating agent a known organic dehydrating agent can be used. Examples of the dehydrating agent include acetal compounds, orthoesters such as tert-methyl methylacetate, and the like.
- a solid dehydrating agent such as Mo1ec c1arSieves may be used as a dehydrating agent component that can also use an organic dehydrating agent such as link ⁇ hexyl carbonate. Use a solid dehydrating agent ⁇ It is preferable to remove the solid dehydrating agent before the step (3) is performed at the port A.
- the use of the second alcohol is optional, but the addition of the alcohol may make it possible to obtain a dialkyl carbonate in a higher yield. This is because there is a reverse reaction of the reaction performed in step (1), and the addition of alcohol can generate a new equilibrium reaction and reduce the contribution of the reverse reaction. This is because. Since the water contained in the alcohol deteriorates the yield of the obtained alkyl silicate, the water contained in the alcohol in the reaction solution is decomposed with respect to the amount of metal atoms of the metal compound.
- ⁇ jl ⁇ volume i3 ⁇ 4 ⁇ preferably 0.1 or less, more preferably 0 • 0
- the alcohol is used in synthesizing at least one of the organometallic compound of the formula (1) and the organometallic compound of the formula (2), and water generated is distilled off.
- the distillation is stopped while removing part of the alcohol while removing the alcohol, the remaining alcohol can be used as at least a part of the alcohol used in step (1).
- the impurity components other than water contained in the alcohol vary depending on the alcohol production method and the refining conditions when recycled and used. For example, ethers, aromatic hydroxy compounds, D, such as sulfuric acid, may be removed if it adversely affects the reaction. If it does not adversely affect the reaction, use it as it is.
- the second alcohol in order to increase the purity of the obtained alkyl alkoxide, an alcohol having an organic group similar to that of the organometallic compound alkoxydialkyl alkoxide is used. I prefer to use it.
- the amount of the second alcohol is preferably 1 to 1 times the amount of the organometallic compound.
- an alcohol having an organic group different from the organic metal compound is used.
- the organometallic compound is only one of the formula (2), the amount of the second alcohol is based on the chemical amount m ⁇ .m -77
- Ri u book ri is 2 to 1000 times, preferably 1
- the range is from 0 to 1000 times.
- the use of a second alcohol having an organic group different from the organometallic compound results in an asymmetric dialkyl carbonate.
- the second alcohol is adjusted so as to fall within the above range.
- reaction may be carried out after adding alcohol to remove the alcohol, if necessary.
- the reaction solution after the completion of the step (1) may be used in the step (2) as it is, or may be used after cooling and heating in the step (2).
- the reaction solution contains dissolved carbon dioxide or contains carbon dioxide as a carbon dioxide adduct of an organometallic compound.
- foaming occurs rapidly due to the presence of the carbon dioxide, and it is difficult to maintain a constant degree of reduced pressure when performing reduced-pressure distillation.
- Step (2) may be performed.
- the decarbonation step can be preferably performed by a method such as heating or depressurization.
- the carbon dioxide captured in the decarbonation step may be captured for use in step (1) helicopter cycle.
- Step (2) is a step of separating dialkyl carbonate from the reaction solution to obtain a residual solution.
- the dialkyl carbonate to be separated (the dialkyl carbonate formed in the step (1)) is a dialkyl carbonate represented by the following formula (24).
- the alkyl group constituting the Arukokishi group R 1 5, R 1 6 are organometallic compounds used in step (1) and, the step (1), second in about E (2), third When an alcohol of the formula (1) is used, it represents an alkyl selected from the group consisting of the alkyl group of the alcohol.
- dialkyl carbonate separated in step (2) examples include dimethyl carbonate, getyl carbonate, propylene carbonate (each isomer), and dibutenyl carbonate (h). Each isomer), dibutyl carbonate (each isomer), dimethyl carbonate (each isomer), dihexyl carbonate
- each isomer methyl ethyl carbonate, methyl propyl carbonate (each isomer), methyl butyl carbonate (each isomer), methyl pentyl carbonate (each isomer), ethyl Lup mouth Pirka one carbonate (each isomer), ethyl butyl carbonate (each isomer), ethyl pentyl carbonate (each isomer), pirpirka one (each isomer), propyl ⁇ Butyl force (one isomer), butyl pentylcapone (each isomer), butylhexylcapone (each isomer), butyl heptylca-ponate (each isomer), butyl octyl force One bond (each isomer) and the like
- step (2) dialkyl carbonate is separated from the reaction solution obtained in step (1) to obtain a metal-containing residual solution.
- the metal-containing residual solution is a renewable active organic compound. Refers to the residual liquid containing a metal compound and a renewable active modified organometallic compound.
- the separation of the dialkyl carbonate in the step (2) is performed by a known separation method. It can be done in any way. Examples of such separation methods include steaming, extraction, filtration, and membrane separation. ⁇ These separation methods may be used alone or in combination.
- Solvents for extraction are solvents that do not react with dialkyl silicate, for example, aliphatics such as hexane and cyclo D hexane, chloroform, chloro methane, and alkene such as methylene PP methylene.
- Preferred are aromatic hydrocarbons such as hydrocarbons, benzene, toluene, and chlorobenzene, and ethers such as ether and anisol.
- the organometallic compound to be used is a methyl group and Z or ethoxy.
- the dialkyl carbonate formed has a boiling point of 100: or less (for example, when the dialkyl carbonate is, for example, dimethyl silicate / diethyl carbonate), it is directly distilled from the reaction solution. Separates the dialkyl carbonate.
- the distillation method a generally known distillation method under normal pressure, reduced pressure distillation, and pressure distillation method can be used. The distillation has a negative temperature of 20.
- the recovery rate can be increased by separating carbonates from the reaction solution at a high speed.
- a distillation method in which the degree of vacuum is increased, and a dialkyl carbonate is quickly formed by increasing the specific surface area Perform thin-film distillation that separates from the reaction solution as a gas phase component.
- a known thin-film distillation apparatus can be used as the thin-film distillation apparatus for performing the thin-film distillation in step (2).
- Known equipment may be connected to the thin-film distillation apparatus.
- the thin-film distillation apparatus preferably used in the present invention is a thin-film distillation apparatus provided with a distillation column.
- a known distillation column can be used as the distillation column.
- the separation temperature at the time of thin-film distillation may be the temperature of the heat transfer surface in the thin-film still, and may be the temperature of the jacket or the heating medium at which the heat transfer surface is at such temperature. This temperature depends on the species and the mixing ratio, such as a component containing dialkyl carbonate and a metal, contained in the reaction solution obtained in the separation step (1), but it is suspended at room temperature (at 20).
- ⁇ is in the range of 80 to 180 ° C. is there.
- Separation pressure is higher for thin-film distillation equipment with a distillation column. Is the pressure at the top of the distillation column, and in the case of a thin-film distillation apparatus without a distillation column, it is the pressure inside the thin-film distillation apparatus.
- the separation pressure depends on the type and the mixing ratio of the raw material compounds to be used, but may be usually reduced pressure or normal pressure, and specifically, usually 0.1 to 101.3 KPa (normally). Pressure), preferably in the range of 0.3 to 30 KPa.
- the heat transfer area in the reactor depends on the type, mixing ratio, and supply rate of the dialkyl carbonate and metal-containing components contained in the reaction liquid used, and the supply rate of the liquid to be separated.
- the feed rate and heat transfer area may be adjusted so that (g H r) falls within the range shown by the following equation (25), and is not limited to the following equation (25)
- the knowledge of thin film distillation generally performed or a known technique may be applied. Corrected form (Rule 91) Feed rate (g / H r) X coefficient k (H r X m 2 / g)
- the thickness of the reaction solution obtained in step (1) when thin-film distillation is carried out depends on the types of components such as dialkyl carbonate, metal-containing components, and the like. ratio, depending on the feed rate and the separation temperature, usually 1 X 1 0 - a 8 1 XI 0 one 1 m. For better separation efficiency, preferably 1X
- the invention does not require the use of solvents, but
- Operations such as increasing the fluidity of the reaction solution obtained in (1) or increasing the fluidity of components containing dialkyl carbonate or metal after thin-film distillation and separation. It may be carried out by adding a solvent that does not react with components containing dialkyl carbonate or a metal for the purpose of facilitating the reaction.
- solvents include aliphatic hydrocarbons such as, for example, hexane, cyclohexane and the like, cross-linked form, dichloromethan. , Trichloromethylene and other aromatic hydrocarbons such as benzene, toluene, and chlorobenzene, ether, and anisource And other ethers.
- components containing mainly dialkyl carbonate In thin-film distillation equipment, components containing mainly dialkyl carbonate And withdraws the residual liquid in liquid form from below the device.
- the extracted component containing mainly dialkyl carbonate may be used as it is in step (4), or may be further purified by a known method and then used in step (4).
- a third alcohol is added during step (2).
- the alcohol to be added is a alcohol having a lower boiling point than the alcohol corresponding to the alkoxy constituting the dialkyl carbonate, and is a straight-chain or branched alcohol having 1 to 6 carbon atoms. Alcohols selected from alkyl alcohols are preferred. That is, when the step (2) is carried out, a third alcohol is added, the ester is transesterified, and the mixture is composed of 3 alcohols obtained in the step (1).
- Separation by distillation after conversion to dialkyl carbonate having a lower boiling point than that of alkyl alkoxide may facilitate the separation.
- the amount of the alcohol varies depending on the conditions of the step (1), but is preferably from 2 to 10 times as a molar ratio to the dialkyl carbonate obtained in the step (1).
- Using a multi-stage distillation column supply the reaction solution obtained in step (1) from the top of the distillation column to the first alcohol and supply the third alcohol from the bottom of the distillation column to correct the third alcohol.
- the method may be a reactive distillation method in which the reaction is carried out at a temperature and pressure at which the gas has a vapor pressure.
- the unreacted organometallic compound, the thermal decomposition product of the organic metal compound, etc. may be removed, or the step (2) may be performed while removing them.
- the organometallic compound used in ⁇ -L3 ⁇ 4E (1) for reacting the organometallic compound with carbon dioxide has reactivity with carbon dioxide.
- the reaction solution of step (1) contains the carbonate formed by the reaction, a renewable active modified organometallic compound, and a non-renewable Reactive organometallic compounds
- step (2) the non-reactive non-reactive organometallic compound may be removed. That is, from the reaction solution obtained in step (1), a first mixture containing dialkyl carbonate and the non-renewable non-reactive organometallic compound (deteriorated product) is used to form a renewable active modified organometallic compound. And a second mixture composed of a residual liquid containing the compound, and further, dialkyl carbonate may be separated from the first mixture. Alternatively, a first mixture containing dialkyl carbonate from the reaction solution, and a residual solution containing the renewable active modified organometallic compound and the nonreactive non-reactive organic metal compound (deteriorated). A second mixture of non-reactive organometallic compounds that cannot be regenerated from the second mixture May be removed.
- renewable permanent organometallic compound is derived from a reactive organometallic compound, and is mainly an adduct formed by reacting the reactive organometallic compound with carbon dioxide. , And refers to a decomposition product of the adduct formed simultaneously with the carbonate ester when the adduct is thermally decomposed.
- examples of the renewable modified organometallic compound include a carbon dioxide adduct of a reactive organometallic compound and a hydrolyzate of a reactive organic metal compound. And a hydrolyzate of a carbon dioxide adduct of a reactive organometallic compound.
- non-reactive non-reactive organometallic compound (often referred to as “deteriorated product”) is derived from a reactive organometallic compound and is a reactive organometallic compound and / or a reactive organometallic compound.
- Detergents are mainly produced in step (3), but may also be produced in the production of reactive organometallic compounds.
- the degraded product referred to in the present invention is mainly a compound having at least three gold-carbon bonds per metal atom in the molecule. Examples of such a compound include a compound represented by the following formula (26).
- M 4 represents a metal atom selected from the group consisting of elements of Groups 4 and 14 of the periodic table excluding silicon;
- R 17 , R: 18 , R ] L 9 are each independently a straight-chain or branched alkyl group of 112, a cycloalkyl group of 512, a linear alkyl group, Alkenyl with branched carbon number 2 1 2
- R 20 is a linear or branched ash ⁇ an alkyl s having a number of 112, a cycloalkyl having a carbon number of 512, a linear or branched alkenyl group having a carbon number of 212, or unsubstituted Or a substituted alkyl group having 6 19 carbon atoms and a linear or branched alkyl group having 114 carbon atoms and an alkyl group selected from the group consisting of 5 14 cycloalkyl groups.
- organometallic oxides Is as its example, compounds such as S n O 2, T i ⁇ 2, Z r ⁇ 2.
- organometallic compound is denatured in the presence of oxygen, and although the structure of the organometallic compound of the present invention is unknown, degradation other than that described above in the presence of oxygen is considered. Denature to a substance. Therefore, the handling, storage, and implementation of each step of the organometallic compound used in the present invention are handled by a known method so as to reduce oxygen.
- the compound represented by the formula (26) is subjected to the formation process of the organometallic compound (1) or (2) or the denaturation of the organometallic compound (1) or (2) by heating in each step of the method of the present invention. It is considered to be generated by
- each step of the method of the present invention is performed under conditions such that the amount of generation of a deteriorated product is reduced.
- the degraded product is not limited to the one represented by the formula (26)
- the degraded product removed in the step (2) of the present invention is mainly a compound represented by the formula (26). )) (Compounds having at least three metal-carbon bonds in the molecule) are useful organic gold compounds (reactive organometallic compounds and renewable modified organic gold) in the present invention. Genus compounds) have different physical and chemical properties.
- the properties of the deteriorated product include a lower boiling point than a useful organometallic compound and a lower hydrolyzability than the useful organometallic compound.
- Components other than the degraded product represented by the formula (26) may be separated. In such a case, generally used methods such as blowdown and excess are preferably used.
- the separated degraded substances such as the compound represented by the formula (26) may be discarded by a general method. For example, it may be discarded as a metal oxide by incineration.
- the separated organodegraded product may be used to regenerate a useful organometallic compound by a known method by adding steps other than the steps of the method of the present invention.
- step (2) water or a solvent containing water is added to the reaction solution to obtain white slurry U-, and then the solid content is separated by filtration. If the filtrate is used, the boiling point is 100 ° C. Dialkyl carbonate exceeding c can be easily separated by distillation.
- the water can be any water, but preferably is distilled and deionized water.
- step (2) when adding water, the temperature at which the water to be added does not solidify in the reaction solution (for example, minus 2).
- step (1) preferably between 10 and 80.
- the temperature may be adjusted to c. It is more preferable that the mouth where the dialkyl silicate is hydrolyzed has a temperature of 10 to 50 ° C. in order to minimize the amount. You can use only water, If water and a solvent are used, use a solvent that does not react with dialkyl carbonate. If water is dissolved in the alcohol used in step (1) and used, the solvent can be easily separated.
- distillation method generally known distillation methods at normal pressure, reduced pressure distillation, and pressure distillation methods can be used.
- the distillation can be carried out at a temperature of between 20 and the boiling point of the dialkyl carbonate and / or phenol, preferably between 50 and the boiling point of the dialkyl silicate and Z or the alcohol. Distillation may be performed by adding another solvent, or extractive distillation may be performed.
- reaction solution After adding water and / or an extraction solvent to the reaction solution after the completion of step (1), the reaction solution may be separated to separate the alkyl carbonate in the oil layer.
- the component containing dialkyl silicate separated by the above-described method may be used as it is in the step (4), or may be purified by a known method as required and then the step (4) is carried out. Good.
- step (3) the residual liquid is reacted with alcohol to form at least one organic metal compound and water, and the water is removed from the organic metal compound. This process is based on W
- the method described in can be used.
- the residual liquid after the separation of the dialkyl carbonate in the step (2) is a mixture containing a metal, and is a transparent liquid or, in some cases, a solid. In any case, the organic liquid is used in the step (3). ⁇ Compounds can be synthesized. Water generated in step (3) is removed from the organometallic compound by a method such as distillation.
- the PI content is preferably 100 ppm or less, more preferably 100 ppm or less.
- the polyol is purified and used by a known separation method such as distillation.
- Preferred compounds for this purpose are the following alcohols with a boiling point of 300 at normal pressure
- step (3) The structure of the metal alkoxide or metal aralkyloxide obtained when polyvalent alcohol is used in step (3) is represented by the formula
- the amount of the phenol used in the step (3) is preferably in the range of ⁇ to 100 000 based on the amount of the gold m atoms in the organic gold m compound used in the step (1). Double range, more preferred ⁇ is 2 to 1
- step (3) varies depending on the type of alcohol, but can be carried out at room temperature (20 ° C.) to 300 °.
- a commonly used known dehydration method can be arbitrarily used. It may be removed by a dehydration tower packed with a solid dehydrating agent such as Mo 1 ec ⁇ 1 ar Sieves, or by distillation or membrane separation.
- a method of dehydration by distillation is preferred.
- Known distillation methods can be used. For example, distillation under normal pressure, distillation under reduced pressure, distillation under pressure, thin-film distillation, and extraction distillation can be used.
- Distillation can be carried out between 7 ° C and 20 ° C to the boiling point of the alcohol used in step (3) * ⁇ ⁇ , preferably ⁇ 50 to 1st alcohol.
- the reaction pressure may be increased to increase the vapor pressure of the reactor or increase the pressure.
- the reaction temperature is higher than the boiling point of the phenol at normal pressure. It may be carried out up to boiling. At this time, other components may be added.
- the method using pervaporation pervaporation membrane method
- the method using pervaporation is preferable because water can be removed efficiently.
- the dehydration in step (3) is performed by distillation.
- the outlet may be at any temperature below the boiling point of alcohol and in a range where water has a vapor pressure. It is preferable to carry out the process at the azeotropic temperature of water and alcohol at the site where the water is condensed, and when the water and alcohol do not form an azeotropic mixture, the steam temperature becomes the boiling point of water. It is preferable to carry out at Further, even when alcohol does not form an azeotrope with water, water can be removed by azeotropic distillation by adding a solvent that azeotropes with water. Kazu is preferred. Examples of such solvents are hexane, benzene toluene, xylene, naphthalene anisol,
- Halogenated hydrocarbons and the like can be used.
- Step (3) may be carried out in the presence of an inert gas if necessary.0
- an inert gas By introducing an inert gas, water from the gas in the gas phase of the reactor is extracted out of the system. In some cases, the reaction performed in step (3) may be accelerated.
- the inert gas may be any gas that does not affect as / in step (3). Examples of such an inert gas include nitrogen, argon, helium, and the like.A gaseous organic solvent that azeotropes with water as described above is supplied. Just a little. Also use carbon dioxide Wear.
- step (3) When carbon dioxide is used in the step (3), it may react with the formed organic metal compound to form an aluminum alkyl.It is not inert, but is not adversely affected in the present invention.
- the alcohol to be reacted in step (3) may be supplied in gaseous form. Alcohol is a reactant, but may be used because it does not adversely affect step (3).
- Inert gas may be introduced from any part of the reactor, but is preferably ⁇ Since the amount introduced into the reaction solution from below varies depending on the shape of the reactor and the reaction conditions, it may be determined by appropriately rounding B.
- reactor used in the step (3) there is no particular limitation on the reactor used in the step (3), and a reactor having a large gas-liquid interface area of a reaction solution that can be used by a known reactor is preferable.
- C stirrer with baffle, bubble column, etc. can be used preferably
- the reaction in step (3) yields at least one organometallic compound.
- This organometallic compound usually has a small number ⁇ with a structure selected from the group consisting of the above formulas (1) and (2).
- Step (3) can be terminated when little water is generated from the reaction. Repeated process depending on the amount of water removed
- the amount of water that can be usually removed is calculated based on the assumption that only the metal alkoxide and metal aralkyl oxide represented by the above formula (1) are formed. It is in the range of 0 to 1 times.
- step (3) After completion of step (3), if necessary, an excessive amount of alcohol may be removed. In view of the purity of the dialkyl carbonate obtained in the repeated step (1), removal is preferred. In the case where the same alcohol is used in the step (1) in the step (1) to be repeated in the step D, the alcohol may not be removed, or a shortage may be added when the step (1) is performed. If necessary, the organometallic compound may be recovered and used in step (1).
- the removal of alcohol from isri can be removed by filtration if the resulting metal alkoxide or metal aralkyloxide is a solid, but the metal alkoxide or metal aralkyloxide can be removed by filtration. If the liquid is liquid, remove it by vacuum distillation.Inert an inert gas such as nitrogen to remove the alcohol corresponding to the vapor pressure.In this case, use a sufficiently dried inert gas Otherwise, the obtained metal alkoxide or metal aralkyloxy is hydrolyzed into metal oxide and alcohol, and the yield of dialkyl carbonate obtained in the repeated process (1) becomes extremely low.
- the recycling may be cooling or heating and returning. Even if it is carried out continuously Alternatively, it may be implemented in a bathochi style. At that time, if necessary, an organic metal compound can be added.
- step (4) the dialkyl carbonate separated in step (2) is reacted with an aromatic hydroxy compound to obtain an aromatic carbonate.
- the alkyl silicate shown in the formula (24), which is separated in the step (2) is used as a starting material, and the aromatic hydroxy compound (for example, represented by the formula (3)) is used as a reactant.
- the aromatic hydroxy compound for example, represented by the formula (3)
- a group consisting of alkaryl oxalate U represented by the following formula (27) and diallyl carbonate represented by the following formula (28) is selected.
- one kind of aromatic carbonate is obtained. There may be only one type of carbonate, and two or more types of carbonate.
- R 2 1 is selected R 1 5, R 1 or these starting materials, A r A, A r 3 is, A reactant, aromatic Zokuhi de proxy group Represents an aromatic group constituting )
- alkyl aryl carbonate represented by the formula (27) examples include methyl phenol carbonate, ethyl phenyl carbonate, propyl phenyl carbonate (each isomer), and aryl phenyl carbonate.
- diaryl carbonate represented by the formula (28) examples include diphenyl carbonate, ditricarbonate (each isomer), dixyllicone carbonate (each isomer), and triphenyl carbonate.
- Lufylcarbonate (each isomer) Xylylfurnylcarbonate (each isomer), Xylylurylcarbonate (each isomer), Dinaphthylcarbonate, Jetylfenrkaone (Each isomer), di (propylphenyl) force (each isomer), di (butylphenyl) force-one, di (trimethylphenyl) force-bonone (each isomer) Methoxy phenyl) carbonyl (each isomer), di- (phenyl D) phenyl carbonate (each isomer), di-nitrophenol (each isomer) No.
- the reaction represented by the above formula (9) in the step (4) is an equilibrium reaction based on the ester exchange between the alkyl alkoxide and the aromatic hydroxy P oxy compound. If it is desired to proceed to the next step, it is preferable to react the alcohol generated by elimination in the ester exchange reaction with no force. In this case, the aromatic hydride used in step (4) is preferably used.
- the boiling point of the hydroxy compound is used in step (3). Preferably higher than the boiling point of the alcohol
- the first, second and third alkyl alcohols can be repeated one or more times in a row.
- the difference in boiling ratio is preferably 2 t :. I like it.
- the alcohol used in step (3) preferably has a higher boiling point than water.
- alkenyl alcohol, cycloalkyl alcohol, or aralkyl alcohol having a branched alkenyl group having 4 12 carbon atoms is preferably used in the step.
- alkenyl compounds having a lower boiling point are more preferable than the aromatic hydroxyl compounds used in step (4).
- step (4) the alcohol to be replicated is extracted in gaseous form, and the product, alkyl carbonate and diaryl carbonate, is extracted in liquid form from the reactor.
- Alkyl carbonate which is a dialkyl carbonate composed of an alcohol having a low boiling point and a low boiling point. Those with a boiling point lower than those of phenyls are preferred.
- a similar example of a preferred alcohol is ⁇
- 1-butanol 2-methyl-1-propanol More preferred are straight-chain, branched-chain, and cyclic alkyl alcohols having 5 to 8 carbon atoms. The most preferred examples are 1-butyl alcohol and 2-methyl alcohol.
- Alcohol selected from one propanol, linear or branched alkyl alcohol having 5 or more and 6 or less carbon atoms.
- Such an optimal combination includes a first alcohol, a second alcohol, a third alcohol, a metal monocarbon represented by the above formula (1) and the above pd 5c (2).
- the alcohol corresponding to the alkoxy group of the organic metal compound having a monooxygen bond, and the alcohol constituting the dialkyl carbonate are primary alcohols, and include 1-butanol 2-methyl-1-propanol and phenol.
- Each isomer hexanol (each isomer)
- the alcohol include an aromatic hydroxy compound selected from phenol and cresol.
- the amount of the aromatic hydroxy compound to be used in the step (4) is 0-stoichiometric with respect to the dialkyl carbonate used in the step (4).
- aromatic hydroxy compounds Is more preferably in the range of 0.5 to 100 times the stoichiometric amount to dialkyl carbonate, particularly preferably in the range of 0.5 to 10 times.
- the compound to be supplied to the step (4) may be mainly a dialkyl carbonate, an aromatic hydroxy compound, or, if necessary, a catalyst which may contain impurities which do not particularly adversely affect the reaction.
- the raw materials may contain alcohols, alkylaryl carbonate, diaryl carbonate, etc. as the products, but since this reaction is a reversible reaction, the concentration of these products is low. If the value is too high, the reaction rate of the raw material is reduced, which is not preferable in some cases.
- the amount ratio of the dialkyl carbonate to the aromatic hydroxy compound to be supplied may vary depending on the rice and amount of the catalyst and the reaction conditions. The molar ratio of the aromatic hydroxy compound to the kill is 0.01
- the catalyst be supplied in a range of 100 to 1000 times.
- a known method can be preferably applied to the method of adding the catalyst. Step (1) to Step
- the catalyst used in the step (4) may be repeatedly used, and the shortage may be added. You may.
- the reaction time of the reaction in the step (4) varies depending on the reaction conditions, the type of the reactor and the internal structure, but is usually from 0.01 to 5 minutes.
- the reaction temperature is the temperature in the reactor, which varies depending on the type of the starting compound, dialkyl carbonate and aromatic hydroxy compound, but is usually 50 to 350, preferably 50 to 350.
- the reaction is carried out in the range of 100 to 280.
- the reaction pressure varies depending on the type of the starting compound used, the reaction temperature, and the like, but may be any of reduced pressure, normal pressure, and increased pressure. 0 P a ⁇
- a suitable inert solvent for the purpose of facilitating the reaction operation, for example, ethers, aliphatic hydrocarbons, aromatic hydrocarbons, Logenated aliphatic hydrocarbons, halogenated aromatic hydrocarbons m, and the like can be used as the reaction solvent.
- an inert gas such as nitrogen, helium, or argon may be allowed to coexist in the reaction system as a substance inert to the reaction, or accelerate the distillation of low-boiling by-products generated.
- the above-mentioned inert gas or a low-melting organic compound which is inert to the reaction may be introduced in a gaseous state from the bottom of the huge continuous multi-stage distillation column.
- step (4) the dialkyl carbonate, the aromatic hydroxy compound, the alcohol and, if necessary, the catalyst are separated by a known method to obtain an aromatic ester.
- a catalyst may be added.
- the reaction in (4) is mainly an ester exchange reaction, and alkyl ester carbonate and diaryl acrylate are obtained from dialkyl carbonate by ester exchange, but the equilibrium is biased toward the original system. Therefore, when producing aromatic carbonates by this method, it is necessary to improve them.
- an ester exchange reaction catalyst (a catalyst that promotes the reaction of the above reaction formulas (9) to (10))
- the amount of the catalyst depends on the type of catalyst used, the type of reactor, carbonate ester, and aromatic compound. It varies depending on the reaction conditions such as the type and amount ratio of the hydroxy compound, the reaction temperature and the reaction pressure, etc., but the ratio ⁇ to the total weight of the feedstock, dimethyl carbonate and aromatic hydroxy compound ⁇ And usually used at 0.0001 to 50% by weight.
- a catalyst amount of 0.01 to 75% by volume based on the empty space of the reactor is preferably used.
- ester exchange reaction catalysts Numerous metal-containing catalysts are known as ester exchange reaction catalysts. Have been. A well-known ester paternal catalyst can be used in the present invention. Examples of the ester exchange reaction catalyst include compounds that generate Lewis acid or Lewis acid such as transition metal octaride.
- Japanese Patent No. 944545 (U.S. Pat.No. 4,552,704), according to Japanese Patent Application Laid-Open No. 62-2777345, Japanese Patent No.
- a disproportionation reaction catalyst (a catalyst that promotes the reaction of the above reaction formula (11)) may be used together with the above-mentioned transesterification catalyst.
- disproportionation catalysts include, for example, Lewis acid and a transition metal compound capable of generating Lewis acid [Japanese Patent Publication No. 51-75044, published by West German Patent Japanese Patent Publication No. 2552907, U.S. Pat. No. 4,045,644)], Polymeric Tin Compounds [Japanese Patent Publication No. 60-166,144] U.S. Pat. No.
- step (4) The reaction carried out in step (4) is shifted toward the production system as much as possible by devising the reaction system, and the aromatic carbonate ,
- Japanese Patent Application Laid-open No. Sho 5 (1999) discloses a method in which by-products are adsorbed and removed with a molecular sieve.
- Example of Japanese Patent Application Publication No. 52, Example of Japanese Patent Application Publication No. 61-29 1545, Japanese Patent Application Publication No. 62-2777345) The dialkyl silicate and the aromatic hydroxy compound are continuously supplied to a multi-stage distillation column and continuously reacted in the column, and low-boiling components including by-products are continuously extracted by distillation.
- a method of extracting a component containing the generated alkyl carbonate from the lower part of the tower Japanese Patent Application Laid-Open No. 3-291257) can be preferably used. These methods are methods for producing aromatic carbonate esters efficiently and continuously.
- a similar continuous production method involves contact ester exchange in a column-type reactor. (Japanese Unexamined Patent Publication No. Hei 6 — 4102, Japanese Patent Laid-Open No. Hei 6 — 157424, Japanese Unexamined Patent Publication No. Hei 6 — 1
- Japanese Patent Application Laid-Open Publication No. Hei 8-45787 Japanese Patent Application Laid-Open Publication No. Hei 8-45787 and a method of connecting a plurality of reaction tanks in series (Japanese Patent Application Laid-Open No. 6-234707, Japanese Patent Application Laid-Open No. 6-26).
- Japanese Patent Application Laid-Open No. 6-34464 a method using a bubble column reactor (Japanese Patent Application Laid-Open No. 6-289700), a method using a vertically long reaction tank (Japanese Patent Application Laid-Open No. 6-34456) 9 No. 7) has been proposed.
- an aromatic polyhydric hydroxy compound and / or its residue is contained in a catalyst-containing liquid material containing a catalyst.
- a method of preventing precipitation of the catalyst and maintaining long-term stable operation by maintaining the ratio of the metal component to 2 or less with respect to the amount of the metal component5. It is known that substances are produced as by-products.
- No. 52 discloses that when diphenyl carbonate is produced by ester exchange of dimethyl carbonate with phenol, an impurity having a boiling point similar to that of diphenyl carbonate is produced as a by-product and this impurity is mixed into diphenyl carbonate. It states that coloring of a final product, for example, a polycarbonate, is caused.
- the impurities having a boiling point similar to that of n-aryl oxalate include an aryl isomer, which is an isomer resulting from the free transfer of u-ar oleate.
- the force report (hydroxy) is one example.
- diphenyl carboxylate is diphenyl carbonate
- a compound corresponding to xylene carbonate (hydroxylene) aryl is phenyl salicylate.
- Phenyl citrate is a high-boiling substance with a boiling point of 45 higher than that of diphenyl carbonate.
- transesterification catalyst examples include the following compounds.
- Alkali metal complex such as L i (acac), L i N (C 4 H 9) 2 ;
- ⁇ Zirconium complex Complex of zirconium such as Zr (acac) 4 , zirconocene;
- organic compounds in which these catalyst components are present in the reaction system for example, alcohols, aromatic hydroxy compounds, alkylaryl carbonates, diallylates, It may be one that has reacted with a dialkyl carbonate or the like, or one that has been heat-treated with raw materials or products prior to the reaction.
- ester exchange reaction catalysts have high solubility in the reaction solution under the reaction conditions.
- Preferred ester exchange catalysts include Pb ⁇ , P.b (OH) 2 , and Pb ( ⁇
- the aromatic carbonate is formed by the transesterification reaction (equilibrium reaction) between the dialkyl carbonate and the aromatic hydroxy compound. In order to promote this equilibrium reaction effectively, the reaction is performed while extracting alcohol. I like it.
- the disproportionation reaction is also an equilibrium reaction, if an attempt is made to obtain a large amount of diallyl acrylate in the aromatic carbonate, the dialkyl silicate formed by the disproportionation reaction and the aromatic It is advantageous to carry out the reaction while extracting one of the carbonates out of the system.
- the respective alkoxy groups and aryl groups are selected so that the dialkyl carbonate has a lower boiling point than the aromatic carbonate, and the dialkyl carbonate is extracted out of the system. It is preferable to do while out
- a disproportionation reaction catalyst (a disproportionation reaction catalyst that promotes the reaction of the reaction formula (11)) may be added together with the transesterification reaction catalyst.
- the catalyst include a transition metal compound capable of generating Lewis acid and Lewis acid [Japanese Patent Application Laid-Open No. 51-75044 (West German Patent Publication No. 2555).
- the same one as the specific example of the transesterification catalyst described above can be used.
- organic compounds in which these catalyst components are present in the reaction system for example, alcohols, aromatic hydroxy compounds, alkyl carbonates, alkyl diols, diallyl oxalate, dialkyl carbonates It may be one that has reacted with the above, or one that has been heat-treated with raw materials or products prior to the reaction.
- the disproportionation reaction catalyst has high solubility in the reaction solution under the reaction conditions.
- preferred disproportionation catalysts include those mentioned as examples of preferred transesterification catalysts.
- step (4) the aromatic aromatic hydroxy compound and alcohol are separated by a known method, and the aromatic carbonate is particularly limited to the anti-J-core ⁇ 5 form used in step (4).
- various known methods such as a stirring tank method, a multi-stage stirring tank method, a method using a multi-stage distillation column, and a method combining these methods are used. It can be used in any of the continuous and continuous systems. A method using a column is preferred, and a continuous method using a multistage distillation column is particularly preferred.
- the multi-stage distillation column is a distillation column having a multi-stage of two or more theoretical stages of distillation, and may be any column capable of continuous distillation.
- Such multi-stage distillation columns include, for example, a C tray plate type using trays such as foam lining, perforated plate trays, valve trays, countercurrent trays, and the like, and Rashighirin. , Ring, pole ring, berluzador, inter Dx saddle, dixon packing, mcmahon packing, u-pack, sulza packing, merapack, etc.
- a tray-packed-mixing-column system having a combination of a tray portion and a portion filled with packing material is also preferably used.
- the continuous method is carried out using a multi-stage distillation column.
- ⁇ Dialkyl silicate, which is a DJ source, and an aromatic hydroxy compound, which is a reactant, are continuously supplied into the continuous multi-stage distillation column.
- the ester exchange between the two substances is completed in the liquid phase or gas-liquid phase, and at the same time, the aromatic carbonate ester or aromatic carbonate ester mixture D produced
- the high-boiling reaction mixture containing the by-products is withdrawn from the bottom of the distillation column in liquid form, while the low-boiling reaction mixture containing the by-products formed is distilled off from the distillation column. 4 009383
- Aromatic esters are produced by continuously extracting gaseous gas from the upper portion of 100.
- Step (5) is a step of disproportionating the alkyl carbonate obtained in step (4) to produce dialkyl carbonate and diaryl carbonate.
- the step (4) and the step (5) may be carried out in the same manner by adding a disproportionation catalyst during the step (4).
- the step 4) and the step (5) may be performed continuously or batchwise.
- diaryl carbonate is obtained together with the alkyl carbonate. In this case, the step (5) can be carried out as it is.
- the alkyl ester carbonate is produced by the transesterification reaction (equilibrium reaction) between the dialkyl ashate and the aromatic hydroxy compound. It is advantageous to proceed with the reaction while extracting the alcohol. It is preferable that one of the dialkyl carbonate and the diallyl carbonate be reacted while being extracted out of the system.
- each alkoxy group and aryl group are selected so that dialkyl carbonate has a lower boiling point than that of sialyl carbonate, and the dialkyl silicate is converted to a non-system. It is preferable to carry out step (5) while extracting the material. Dialkyl carbonate, a by-product, is extracted in gaseous form, and the product, A more preferred method is to withdraw liquid from the reactor in a liquid state. The extracted dialkyl carbonate may be used by returning to the previous step in step (4). In some cases, alkyl carbonate is obtained in the product liquid stream in step (4). In this case, too, the dialkyl carbonate can be separated and reused in step (4). In order to increase the production of carbon dioxide, the extracted dialkyl carbonate is processed in the process.
- a disproportionation reaction catalyst may be added.
- An example of such a catalyst is the disproportionation reaction catalyst described in step (4).
- organic compounds in which these catalyst components are present in the reaction system for example, alcohols, aromatic hydrides, oxy compounds, alkylaryl carbonates, diallyl carbonates, dialkyl carbonates It may be a product that has reacted with a compound or the like, or a product that has been heat-treated with raw materials or products prior to the reaction.
- step (5) As a method for adding the catalyst, a known method can be preferably applied.
- step (5) is performed subsequent to step (4), the catalyst used in step (4) may be used as it is in step (5).
- alkyl phenyl carbonate used in step (5) examples include methyl phenyl carbonate, ethyl phenyl carbonate, propyl phenyl carbonate (each isomer), aryl phenyl carbonate, and butyl phenyl carbonate (each Hetero-isomer), pentylfoil carbonate (each isomer), charcoal Hexylphenyl acid (each isomer), heptylphenyl carbonate (each isomer), octyl tricarbonate (each isomer), nonyl carbonate (ethylphenyl) (each isomer), decyl carbonate (butyltil)
- the one preferably used in the present invention is that the alcohol constituting the alkyl carbonate is an alcohol having a higher boiling point than water, and The boiling point of the alcohol constituting the acid alkaryl is lower than the boiling point of the aromatic hydroxy compound constituting the alkaryl carbonate ⁇ , for example, 1-butanol, 2-methyl-1-prono ° No or straight or branched alkyl groups having 512 carbon atoms Alkenyl alcohol having a linear or branched alkenyl group having 4 12 carbon atoms, cycloalkyl alcohol, or aralkyl alcohol, and the reaction performed in step (5) is advantageously performed.
- the dialkyl carbonate generated in the reaction of the step (5) is removed in order to proceed, it is preferable that the dialkyl carbonate has a lower boiling point than the acid diaryl obtained in the step (5).
- Such an optimal combination includes the first alcohol, the second alcohol, the third alcohol, and the organic compounds represented by the above formulas (1) and (2).
- Alcohols corresponding to the alkoxy groups of the metal compound, the alcohols constituting the dialkyl acid are primary alcohols,
- the compound to be supplied to the step (5) is mainly alkyl acrylate and, if necessary, a catalyst, but may contain impurities which do not particularly adversely affect the reaction.
- the amount of the catalyst varies depending on the type of the catalyst to be used, the type of the reactor, the type and amount of the alkyl carbonate, the reaction temperature and the reaction conditions such as the reaction pressure, and the like. Account for the weight of the feedstock alkyl carbonate. It is usually used in the range of 0.0001 to 50% by weight. When a solid catalyst is used, a catalyst amount of 0.01 to 75% by volume based on the empty space of the reactor is preferably used.
- feedstocks may contain alcohols, aromatic hydroxy compounds, diallyl carbonate, etc., but these reactions are reversible reactions. Of these components, if the concentration is too high, it may not be preferable because the reaction rate of the raw material decreases.
- the reaction time of step (5) varies depending on the reaction conditions, reactor and internal structure, but is usually 0.01 to 50 hours, preferably 0.01 to 10 hours.
- the reaction temperature which is more preferably 0.05 to 5 hours, is the temperature in the reactor, and varies depending on the type of alkaryl carbonate, which is a raw material compound used. Always 50-350, preferably 100-280.
- the reaction is carried out in the range of C.
- the reaction pressure varies depending on the type of the starting compound used, the reaction temperature, and the like, but may be any of reduced pressure, normal pressure, and pressurized ⁇ , usually 10 Pa to 20 Pa. It is performed in the range of MP a.
- an inert solvent suitable for the purpose of facilitating the reaction operation for example, ethers, aliphatic hydrocarbons, aromatic hydrocarbons, Octalogen-modified aliphatic hydrocarbons, halogenated aromatic hydrocarbons and the like can be used as a reaction solvent.
- substances that are inert to the reaction As a result, an inert gas such as nitrogen, helium, or argon may be allowed to coexist in the reaction system, or a large, continuous multi-stage distillation column for distilling off low-boiling by-products may be formed.
- the inert gas or the low-melting organic compound inert to the reaction may be introduced in gaseous form.
- the type of the reactor used in step (5) is not particularly limited, and various known methods such as a stirring method, a multi-stage stirring tank system, a system using a multi-stage distillation column, and a system combining these are used.
- the preferred method is to use a multi-stage distillation column, since a batch reactor or a continuous reactor can be used, since the equilibrium that can be used is efficiently shifted to the production system side.
- the continuous method was particularly preferred.
- the multi-stage distillation column is a distillation column having a multi-stage of two or more theoretical stages of distillation, and may be any column capable of continuous distillation.
- Such multi-stage distillation towers include, for example, a tray tower type using trays such as bubbly trays, perforated plate trays, valve trays, countercurrent trays, etc .; Lengling, Paulling Berlza
- a continuous process is carried out using a multi-stage distillation column.
- Alkylar carbonate as a starting material is continuously supplied into the multi-stage distillation column, and a liquid phase is formed in the distillation column in the presence of a metal-containing catalyst.
- the disproportionation reaction is carried out in the liquid phase, and the high-boiling reaction mixture containing diaryl carbonate to be produced is withdrawn from the lower part of the distillation column in liquid form, while the low-boiling reaction mixture containing by-products formed Is continuously extracted in gaseous form from the top of the distillation column by distillation to produce carbonate.
- the material of the apparatus for achieving the method of the present invention is not particularly limited, but is usually selected from stainless steel and glass lining.
- the reactors, pipes, and other inks required for the production used in the present invention are not limited to these, but may be any by-products produced by the reaction using known methods.
- a process step may be added during the removal step. If necessary, instrumentation equipment such as a flow meter and a thermometer, and known process equipment such as a U boiler, a pump, and a storage tower may be added. Heating is performed using a known method such as steam or heat. Cooling is also performed using a cooling method. Cooling water A known method such as brine can be used. In order to achieve this, the heat balance of each process is balanced, and a design that takes into account the recovery method to facilitate recycling is adopted.
- the alcohol produced in the step (4) is recycled to the step (3), and the alcohol produced in the step (4) is recycled.
- the alcohol can be reused again as a raw material in step (4).
- the alcohol produced in step (4) is used in step (3) helicopter cycle.
- Dialkyl silicate produced in (5) can be used in step (4) helicopter.
- Step (4) the alcohol recovered from the raw material can be recycled as it is and used in Step (3), but it contains aromatic hydroxy compounds and compounds containing carboxylic acid groups.
- a known separation method is used so that the total content of the aromatic hydroxy P-oxy compound and the compound containing a sulfonic acid is 100 ppm or less, more preferably 100 ppm or less. Separation by distillation, which is used after purification, can be preferably applied, and when step (4) is performed by a method of reactive distillation, alcohol purification can be performed simultaneously by a distillation column, which is preferable.
- New separation method is used so that the total content of the aromatic hydroxy P-oxy compound and the compound containing a sulfonic acid is 100 ppm or less, more preferably 100 ppm or less.
- Dicarbonate recovered from step (4) and / or step (5) 08 Alkyl may be recycled as it is and used in step (4).
- the dialkyl carbonate may be recycled by refining or adjusting the concentration.
- Other components are aromatic hydroxy compounds and components that are by-produced during a transesterification or disproportionation reaction. Examples of such by-products include dialkyl ether, which is a decarboxylation product of ash acrylate, and U-l
- the other components contained in the recovered carbonate may be partially removed or the concentration may be reduced for recycling.
- Known methods can be used. For example, a method by distillation or the like is preferable.
- aromatic acid ester obtained by the method of the present invention is used to prepare U-carbonate, isocyanate or polybutadiene.
- diaryl carbonate is preferred as an aromatic carbonate ester. Describe succinates or polycarbonate diols.
- dimethyl carbonate is obtained from ethylene carbonate and methanol, then methylphenyl carbonate is obtained, and diphenyl carbonate is obtained.
- it is essential to pass through dimethyl carbonate as an intermediate due to the restriction of the boiling point. (Methanol is the lowest boiling in the system and methanol is required to shift the equilibrium.) It is necessary to form a minimum azeotrope with).
- Methylphenyl carbonate which is inevitably derived, is liable to cause side reactions such as decarboxylation.
- the polymerization rate is slowed down or the degree of polymerization varies, or the shade is affected on the hue during the production of the polycarbonate using the diphenyl carbonate mixed into the sole.
- the intermediate is not limited to methyl carbonate.
- Diphenyl carbonate free of by-products having a methyl group which has an effect on the production of a reactive component can be obtained.
- the by-product having the methyl is 100 ppm or less, more preferably 100 ppm. The following carbonates are listed:
- the aromatic acrylate (particularly diallyl carbonate) of the present invention is reacted with a polyamide compound to obtain a polycarbamate such as, for example, hexamethylene dialcanomate. Then, by pyrolysis, an individual can be obtained.
- a polycarbamate such as, for example, hexamethylene dialcanomate.
- an individual can be obtained.
- an economical method for synthesizing an isocyanate was only known from phosgene raw materials, but the diallyl carbonate produced according to the present invention is inexpensive and has an extremely low chlorine compound content, which is advantageous. It is possible to manufacture dissimilar products.
- an isocyanate obtained from a chlorine-containing compound such as phosgene contains a chlorine compound.
- the urethanation catalyst has a problem of deactivation by chlorine and denaturation, but the diphenyl acrylate obtained by the production method of the present invention has a problem.
- the produced isocyanate is substantially free of chlorine compounds and does not cause the above problems.
- a metal compound is weighed in a range of 0.1 to 0.5 g, and about 0.9 g of deuterated chloroform is added thereto to obtain an NMR analysis sample solution.
- reaction solution is weighed in the range of 0.1 to 1 g, and 0.055 g of tetramethyltin and about 0.85 g of heavy-mouthed form are added to make a sample solution.
- Liquid phase 100% dimethylpolysiloxane
- the yield of the aromatic carbonate is expressed in terms of% by weight in the reaction solution, based on the number of moles of the starting material (dialkyl carbonate) supplied to the step (4), and the obtained alkylalkyl carbonate and dicarbonate. It was determined in terms of mol% of the reel. 4) Number average molecular weight of aromatic polycarbonate The number average molecular weight of aromatic polycarbonate was measured by gel permeation-short chromatography (GPC).
- GPC gel permeation-short chromatography
- Dibutyltin alkoxide was produced as follows using an apparatus as shown in Fig.3.
- Step (2) was carried out as follows using an apparatus as shown in Fig. 4.
- step (1) The reaction solution of step (1) was withdrawn from the lower part of the autoclave and transferred to a decarbonation tank 25 purged with nitrogen through a conduit 133 in a nitrogen atmosphere. Heat and stir for 5 minutes to purge the generated carbon monoxide.
- a thin-film distillation apparatus 30 (E-420, manufactured by Shibata Kagaku Co., Ltd., Japan) was connected to a multi-stage distillation column 27 with an inner diameter of about 5 cm, filled with Dixon packing (6 mm).
- the reaction liquid stored in 31 was supplied from the middle stage of the distillation column through a conduit 132 at a rate of about 100 g ZHr.
- the reflux ratio was about 0.2.
- a heating medium of 130 ° C. was circulated through the jacket to set the internal pressure (distillation tower top pressure) to about 1.3 KPa. Volatile components were transferred to storage tank 29 by condensation 28. The liquid phase component was extracted and extracted into storage tank 32 through pump and conduit 31. About to storage tank 2 9
- Step (3) was performed as follows using the equipment shown in Fig. 3.
- the liquid extracted in the storage tank 32 in the step (2) was supplied to the 5 L SUS reactor 1 equipped with a haffle and a pipe via a conduit 35.
- the reactor internal liquid was heated, the pressure inside the reactor was reduced, the unreacted alcohol was converted into a gaseous state, extracted from the conduit 21, and transferred to the storage tank 16 through the condenser 6.
- the liquid phase component was extracted and transferred to storage tank 23 through conduit 12.
- Catalyst A was prepared by heating 40 g of phenol and 8 g of lead monoxide at 180 for 10 hours and distilling off the generated water together with the phenol.
- Step (4) was carried out as follows using an apparatus as shown in FIG.
- the reaction was carried out by feeding continuously in liquid form at about 2700 g / Hr from conduit 37 via 38.
- the amount of heat required for the reaction and distillation was supplied by circulating the liquid at the bottom of the column through a conduit 46 and a reboiler 45.
- the gas distilled from the top of the continuous multi-stage distillation tower 39 is passed through a conduit 40 to a condenser. It was condensed at 41 and was continuously drained from the conduit 44 to the storage tank 1338 at about 240 gHr. Continuously withdrawn from the bottom of the tower to storage tank 47 via conduit 46 at about 30 g / Hr
- composition of the liquid withdrawn from the conduit 44 is about 1
- the liquid continuously withdrawn into the storage tank 1338 was fed continuously from the conduit 59 through the preheater 60 at approximately 240 g / Hr to perform distillation separation. .
- the amount of heat required for the distillation separation was supplied by circulating the liquid at the bottom of the column through a conduit 68 and a lipoiler 67.
- the liquid temperature at the bottom of the continuous multi-stage distillation column 61 was 189 ° C., the pressure at the top was about 10 13 KPa (normal pressure), and the reflux ratio was about 3.5.
- the gas distilled from the top of the continuous multi-stage distillation column 61 passes through the conduit 62, is condensed in the condenser 63, and is passed through the conduit 66 to the alcohol storage tank 1 35 at about 16.3 g / Hr. TJP204 / 009383
- the dibutyltin alkoxide manufacturing process and process (3 m) were placed at approximately 0.4 m above the continuous multistage distillation column 14 with an inner diameter of approximately 5 cm and a length of 2 m filled with dixon packing (6 mm ⁇ ). ),
- the reaction solution transferred to the storage tank 7 was fed through the preheater 13 continuously at about 25 Og / Hr to separate alcohol and water by distillation.
- the amount of heat required for the distillation separation was supplied by circulating the liquid at the bottom of the column through the conduit 15 and the lipoiler 22.
- the liquid temperature at the bottom of the continuous multi-stage distillation column 14 was 81 ° C, and the top pressure was about 2 OKPa.
- the gas distilled from the top of the continuous multi-stage distillation column 14 was condensed in a condenser 18 via a conduit 17 and separated into two liquid phases in a gas-liquid separator 12 9.
- the lower phase of the liquid is continuously withdrawn at a rate of about 25 g / Hr into a storage tank 19, and only the upper phase is used as a reflux liquid at a reflux ratio of about 0.6, through a conduit 20 and through the conduit 20 to form a column. Returned to.
- a conduit 15 From the bottom of the tower, a conduit 15 After that, it was continuously extracted into storage tank 16 at about 2 25 g / Hr.
- the composition of the liquid withdrawn to reservoir 16 was 1—about 100 wt% and water was below the detection limit.
- the composition of the liquid withdrawn to storage tank 19 was 1 vessel. Evening: 75 Wt%; water: 25 wt%.
- the liquid drawn out to storage tank 32 in step (2) was supplied to 5 L SUS reactor 1 with a knotted pipe 5 via conduit 35, and was discharged to storage tank 135 in the recycling process of alcohol.
- One butanol is supplied to the pipe 1 3 4 Power tank and stored in the distillation and separation process of alcohol and water
- a nitrogen gas feed was started from the inert gas conduit 2 through the US pipe. Stirring and heating of the reactor are started, and
- the temperature was adjusted so that the boiling point was 1 bn from 113 ° C. In this state, an anti-J is added for about 6 hours. During that time, the point component generated from the gas extraction conduit 5 connected to the upper part of the anti-core 1 is extracted as a gas phase, and the condenser is extracted. Transferred to storage tank 7 through 6. In the storage tank 7, a 1-mL solution containing water was obtained. The liquid phase component inside the reactor 1 is extracted from the extraction conduit 8 to the storage tank 9 From the transferred storage tank 9, it was transferred via a conduit 10 to a dealcoholizer 11 equipped with a stirrer, a device for reducing pressure, and a heating device.
- a dealcoholizer 11 equipped with a stirrer, a device for reducing pressure, and a heating device.
- step (1) was carried out as follows.
- dibutyltin alkoxy was manufactured as follows.
- the autoclave After placing the autoclave in a 200 m1 autoclave (manufactured by Toyo Kogyo Co., Ltd., Japan) and replacing it with nitrogen, the autoclave was connected to the autoclave via a SUS tube and a valve. After setting the secondary pressure of the connected carbon dioxide cylinder to 5 MPa, the valve was opened, and carbon dioxide was introduced into the Oak Reave. The mixture was stirred for 10 minutes and the valve was closed. The temperature was set to 120 while stirring the autocrap. The temperature was raised to c. The internal pressure of the autoclave is always about 4
- Step (2) is performed as follows using an apparatus similar to III-4. Carried out
- reaction solution of the evaporator (1) was withdrawn from the lower part of the autoclave, and transferred to the carbon dioxide-depleted carbon dioxide 25 through the conduit 13 33 at 80 ° C for about 5 minutes. Generated by heating and stirring-Carbon oxide was blown. Conduit from decarbonation tank 25
- a thin-film distillation apparatus 30 (from Shibata Kagakusha E-420, the home country) was connected to a multi-stage distillation column 27 with an inner diameter of about 5 cm, filled with ⁇ -ixon powder (6 mm).
- the reaction liquid stored in 31 was supplied at a rate of about 100 gr from a middle stage of the distillation column through a conduit 132.
- the reflux ratio was about 0.2.
- the heat medium at 130 was circulated through the jacket to set the internal pressure (the pressure at the top of the distillation column) at about 1.3 KPa. Volatile components were transferred to storage tank 29 by condensation 28. The liquid phase component was extracted to the storage tank 32 through the extraction pump and the conduit 31. About to storage tank 2 9
- the dimethyl carbonate was extracted and did not contain butyl tin alkoxide.
- the liquid was withdrawn at approximately 90 g / Hr into the storage tank 32, and the amount of hydrogen carbonate in the liquid was below the detection limit.
- Step (3) was performed as follows using a device as shown in Fig. 3.
- the liquid extracted into storage tank 32 in step (2) is backed up in conduit 3.5. It was supplied to a 5 LSUS reactor 1 with a full. About 2-150 g (29 mol) of 1-butanol was supplied from conduit 3. At 0.1 N / Hr, feed of nitrogen gas was started from the inert gas conduit 2 through the SUS pipe. Stirring and heating of the reactor 1 were started, and the temperature of the reaction solution was adjusted from 113 ° C. to the boiling point of 1-butanol by adjusting the inn.
- the liquid transferred to the storage tank 23 was repeatedly recycled to the step (1) where the steps (1) to (3) were repeated.
- Catalyst A was prepared by heating 40 g of phenol and 8 g of lead monoxide at 180 X for 10 hours, and distilling off generated water together with phenol.
- Step (4) was performed as follows using an apparatus as shown in FIG.
- reaction mixture containing dimethyl carbonate and a mixture of phenol and catalyst A (the volume ratio of dibutyl carbonate and phenol in the mixture was 65/35, Pb concentration is about
- the reaction was carried out by continuously feeding the liquid from 37 to about 270 g / Hr, and the amount of heat required for the reaction and distillation was obtained by flowing the liquid at the bottom of the column to the conduit 46 and the lipoiler 45 It was supplied by circulating through The liquid temperature in the bottom of the continuous multi-stage distillation column 3 9 2 3 1, overhead pressures Ri 2 XI 0 5 P a der reflux ratio was about 2.
- the gas distilled from the top of the continuous multi-stage distillation column 39 passes through the conduit 40 and is condensed by the condenser 41, and is condensed to the storage tank 1338 by the conduit 44 at about 67 g / hr. Extracted continuously. It was continuously extracted from the bottom of the tower to storage tank 47 via conduit 46 at about 203 g ZHr.
- composition of the liquid withdrawn from conduit 44 is approximately 1
- the composition of the liquid withdrawn into the storage tank 47 is about 11% by weight of phenol, about 64% by weight of siptilka-bottle, about 22% by weight of butylphenol-bottle, and about 22% by weight of diphenyl-borea. Approximately 1 wt%, Pb concentration approximately 1 wt%.
- Step (5) was performed as follows using an apparatus as shown in Fig. 6.
- the liquid drawn into the storage tank 47 in the middle stage of the multi-stage distillation column 50 with an inner diameter of about 5 cm and a tower length of 2 m filled with Ralphson packing (6 mm ⁇ ) is used.
- a conduit of 48 kg and a volume of about 203 g ZHr are continuously mixed in a liquid state, and the amount of heat necessary for distillation and the amount of heat required for distillation are lower in the column.
- the liquid was supplied by circulating through a conduit 57 and a reboiler 56.
- the liquid temperature at the bottom of the continuous multi-stage distillation column 50 is 237. c,
- the top pressure is about 26 KPa, and the reflux ratio is about 2.
- the gas distilled from the top of the column 50 was passed through a conduit 51, condensed in a condenser 52, and continuously extracted from the conduit 55 at about 172 g / Hr. From the bottom of the column, it was continuously extracted at about 31 g / Hr into a storage tank 58 via a conduit 57.
- composition of the liquid extracted from the conduit 55 is approximately 1-
- the composition of the il ⁇ l liquid drawn into storage tank 5 8 is The dibutyl power per component was about 0.1 wt%, the butyl ferronica per h h was about 27 wt%, the diferrcap per ponate was about 64 wt%, and the P concentration was about 9 Wt%.
- a continuous flow from the pipe 44 to the storage tank 13 38 is carried out in the middle stage of the process (4).
- the extracted liquid was continuously fed from a conduit 59 through a preheater 60 with about 201 g ZHr to carry out distillation separation.
- the amount of heat required for the fractionation was supplied by circulating the liquid at the bottom of the column through the conduit 68 and the U-pole -67.
- the liquid temperature at the bottom of the continuous multi-stage distillation column 61 was 15.6 X :
- the overhead pressure was about 40 ⁇ a, and the reflux ratio was about 0.7.
- the gas distilled from the top of the '195 multi-stage distillation column 61 passes through the conduit 62, is condensed in the condenser 63, and is condensed in the condenser 63.
- the sample was continuously extracted to 5 with about 55 g ZH ⁇ .
- a conduit from the bottom of the tower was provided.
- composition of the piled liquid is approximately
- the composition of the liquid extracted to 9 was about 1 wt% of butyl carbonate, the detection of ethanol was below the detection limit, and the phenol was about 99 w t%.
- the liquid continuously transferred to the storage tank 58 in step (5) is placed in the middle stage of a continuous multistage distillation column 72 with an inner diameter of about 5 cm and a length of 2 m filled with dixon packing (6 mm ⁇ ).
- the feed was continuously fed from the conduit 70 through the preheater 71 at about 31 Og ZHr to carry out distillation separation.
- the amount of heat required for the distillation separation was supplied by circulating the liquid at the bottom of the column through a conduit 79 and a re-poyler 78.
- the liquid temperature at the bottom of the continuous multi-stage distillation column 72 was 210 ° C.
- the top pressure was about 1.5 KPa
- the reflux ratio was about 1.
- the gas distilled from the top of the continuous multi-stage distillation column 72 was condensed in a condenser 74 through a conduit 73, and was continuously extracted from the conduit 77. From the tower bottom, it was continuously withdrawn at about 27 g / Hr into a storage tank 80 via a conduit 79.
- the composition of the liquid withdrawn from the conduit 77 was about 0.1% by weight of dibutyl carbonate, about 30% by weight of butylphenol carbonate, and about 70% by weight of one piece of diphenylcarbonate. there were.
- Distilled packing (6 mm ⁇ ) packed with a continuous multi-stage distillation column with an inner diameter of about 5 cm and a length of 2 m with a diameter of about 5 cm 83 From there, the mixture was fed through a preheater 82 continuously with about 283 g ZHr to carry out distillation separation.
- the amount of heat required for the distillation separation is as follows. It was supplied by circulating through 9.
- the liquid temperature at the bottom of the column No. 3 was 248 ° C.
- the pressure at the top of the column was about 27 KPa
- the reflux ratio was about 4.
- the gas distilled from the top of the continuous multistage distillation column 83 passes through the conduit 84, and is condensed in the condenser 85, and the conduit
- the column was continuously extracted at about 85 g / Hr from 88, and was continuously extracted at about 198 g / Hr from the bottom of the tower to storage tank 91 via conduit 90.
- the composition of the liquid withdrawn from the conduit 88 was about 0.4 wt% of dibutyl carbonate, about 99 wt% of butyl phenol, and about 0.2 wt of diphenyl carbonyl. %.
- the composition of the liquid withdrawn into storage tank 91 is as follows:
- Chlorine in the reaction solution was below the detection limit Byeon.
- Dibutyltin alkoxide was manufactured using the equipment as shown in Fig. 3 as follows. ⁇ 5 L SUS reactor equipped with a stirrer and heating device and baffle
- the liquid inside the de-alcohol is heated, the pressure inside the de-alcohol is reduced, the unreacted alcohol is turned into gas, and the alcohol is drawn out from the pipe 21. And transferred to storage tank 16. The liquid phase component was extracted and transferred to storage tank 23 through conduit 12.
- the weight of the solution was about 1,280 g, and the content of dibutyltinbutoxide was about 2.08 mol, 1,1,3,3-tetrabutyl-1,3-dibutyloxydioxide. Evening Noxan is about
- the liquid transferred to storage tank 23 flows from storage tank 23 through conduit 24.
- reaction solution with a bone mass of about 0.57 mol / kg was continuously withdrawn from the lower part of the autoclave to the storage tank 127.
- step (1) the heart fluid continuously withdrawn into storage tank 127 was transferred to decarbonation tank 25 with about 5 15 g Hr, and then returned to 80 in a normal atmosphere. The mixture was heated and stirred for about 5 minutes as a residence time, and the generated carbon dioxide was purged. Extracted 25 to 25 tanks of carbon dioxide from storage tank 13 through conduit 26
- a thin-film distillation apparatus 30 (E-420, manufactured by Shibata Kagaku Co., Japan) was connected to a multi-stage distillation column 27 with an inner diameter of about 5 cm filled with a dixon packing (6 mm ⁇ ).
- the reaction liquid stored in 31 was supplied from the middle stage of the distillation column through a conduit 132 at a rate of about 100 g / Hr.
- the reflux ratio was about 0.2.
- step (3) was performed as follows, following step (2).
- the liquid drawn into the storage tank 32 in step (2) is continuously supplied through the conduit 33 to the 60-liter SUS reactor 1 with baffle at approximately 413 gHr via the conduit 35 and the baffle. did.
- 1-butanol was supplied from the storage tank 16 through the conduit 3 at a rate of about 7412 g / Hr (10 Omo1 / Hr).
- Nitrogen gas was fed into the reactor 1 from the inert gas conduit 2 through a SUS pipe at 1.5 NL ZHr, and the stirring and the reaction solution temperature were reduced from 113 ° C to 1 ° C. The temperature was adjusted so that the boiling point of the nozzle was reached.
- the low-boiling components generated from the connected gas extraction conduit 5 were extracted as a gas phase and transferred to the storage tank 7 through the condenser 6.
- tank 7 1-butanol solution containing water was obtained.
- the liquid phase component inside the reactor 1 was withdrawn by a pump and transferred to the storage tank 9 from the withdrawal conduit 8.
- a stirrer and It was transferred to a dealcoholizer 11 equipped with a heating and decompression device.
- the liquid inside the dealcoholizer was heated, the pressure inside the reactor was reduced, the unreacted alcohol was converted to a gaseous state, extracted from the conduit 21, and transferred to the storage tank 16 through the condenser 6.
- the liquid phase component was withdrawn and transferred to storage tank 23 through conduit 12.
- the liquid transferred to the storage tank 23 was repeatedly recycled to the step (1) where the steps (1) to (3) were repeatedly performed.
- Step (4) was performed as follows using an apparatus as shown in Fig. 5.
- the composition of the liquid extracted from the conduit 44 was about 27 wt% of 1-butanol, about 72 wt% of phenol, and about l wt% of dibutyl carbonate.
- the composition of the liquid drawn into storage tank 47 is 1 ppm of polypropylene, 330 ppm, phenol of about llwt%, dibutyl carbonate of about 65 wt%, and butylphenol carbonate of about 21 %, Diphenyl carbonate about lwt%, Pb concentration about 1 wt%
- a continuous multi-stage distillation column 50 with an inner diameter of about 5 cm and a tower length of 2 m filled with 40 trays of sieve tray, drained to storage tank 47 in step (4)
- the discharged liquid was fed continuously from a conduit 48 through a preheater 49 in a liquid state with about 203 g ZHr, and the reaction was completed.
- the amount of heat required for the reaction and distillation was supplied by circulating the liquid at the bottom of the column through conduit 57 and reboiler 56.
- the liquid temperature at the bottom of the continuous multi-stage distillation column 50 was 237, the pressure at the top was about 27 KPa, and the reflux ratio was about 2.
- the gas distilled from the top of the continuous multi-stage distillation column 50 is condensed in the condenser 52 through the conduit 51, and is continuously transferred from the conduit 55 to the storage tank 1 26 at about 172 g Hr. I was extracted. From the bottom of the tower, it was continuously extracted at about 31 g / Hr into a storage tank 58 via a conduit 57.
- the composition of the liquid extracted from the conduit 55 to the storage tank 126 is about 39 O ppm per day, about 13 wt% of phenol, and about 8 wt% of dibutyl carbonate. The content was 6 wt% and about lwt% of butyl phenolate.
- composition of the liquid withdrawn into storage tank 58 was about 00 ppm of dibutyl carbonate, about 26 wt% of butyl phenyl carbonate, about 65 wt% of diphenyl carbonate, and about 8 wt% of Pb concentration. %Met.
- the above steps (1) to (5) were repeatedly performed.
- Purification of diallyl carbonate Purification of diallyl carbonate was performed using an apparatus as shown in Fig. 8 as follows.
- Feeding was continuously performed at 310 g / Hr, and distillation separation was performed.
- the amount of heat required for distillation separation is determined by passing the liquid at the bottom of the column to the conduit 7 9 and the reboiler 7
- the liquid temperature at the bottom of the column 2 was 210 ⁇ , the pressure at the top of the column was about 1.5 KPa, and the reflux ratio was about 1.
- the gas distilled from the top of the continuous multi-stage distillation column 72 was condensed in a condenser 74 through a conduit 73, and was continuously extracted through a conduit 77. From the tower bottom, it was continuously withdrawn at about 27 g / Hr into storage tank 80 via conduit 79.
- step (3) of Example 3 the reaction solution continuously withdrawn from the storage tank 23 was discharged from the storage tank 23 through the conduit 24 into an 11 creep tank.
- the inside of the single-clavave continuously transferred by Hr is pre-replaced, heated to 120 ° C, and connected to the autoclave via a SUS tube and valve. Pressure of compressed carbon dioxide cylinder to 4 MPa After that, open the lube, introduce carbon dioxide into the autoclave, and keep the internal pressure of the autoclave at about 4
- reaction solution continuously withdrawn to storage tank 127 in step (1) was transferred to decarbonation tank 25 at about 5 g / Hr, and the residence time was set at 80 in a nitrogen atmosphere.
- the mixture was heated and stirred for about 5 minutes to purge the generated carbon dioxide. It was extracted from the decarbonation tank 25 through the conduit 26 to the storage tank 131.
- a thin-film distillation apparatus 30 (E-420, manufactured by Shibata Kagaku Co., Ltd., Japan) is connected to a multi-stage distillation column 27 with an inner diameter of about 5 cm, filled with 6 mm, and a storage tank 1 3 1
- the reaction liquid stored in the distillation column was supplied at a rate of about 100 g Hr from the middle stage of the distillation column through a conduit 132.
- the reflux ratio was set to about 0.2.
- the internal pressure (distillation tower top pressure) was set to about 1.3 KPa.
- the liquid phase component in which the volatile components were transferred to the storage tank 29 by the condenser 28, was extracted and extracted to the storage tank 32 through the conduit 31 by a pump.
- Dibutyl carbonate was withdrawn to the storage tank 29 at about 0.06 mol Hr, and did not contain dibutyltin alkoxide.
- the liquid was withdrawn at approximately 90 g Hr into the storage tank 32, and dibutyl carbonate in the liquid was below the detection limit. I got it.
- the liquid drawn into the storage tank 32 in the step (2) is passed through the conduit 33 to the 60 L SUS reactor 1 with a baffle through the conduit 35 for about 4 hours.
- the liquid phase component inside 1 is drawn out and the pump is used to draw out the liquid.
- dibutyltin It contained butoxide and 1,1,3,3-tetrabutyl-1,3-dibutyroxy-disoxane.
- the liquid transferred to the storage tank 23 was recycled to the step (1) for repeatedly performing the steps (1) to (3).
- Step (4) was performed as follows using an apparatus as shown in Fig. 5.
- reaction solution containing dibutyl carbonate, phenol, catalyst B and the carbonate of Example (3) containing dibutyl carbonate were continuously drawn out to the conduit 55 through the conduit 55.
- a reaction solution containing Pb continuously extracted into storage tank 80 in the process of purifying polyester the weight ratio of diptylcapone to phenol in the mixture is 6%).
- the reaction was carried out by continuously feeding a liquid in Hr.
- the heat required for the reaction and distillation is transferred to the lower part of the column via conduit 57 and reboiler 56. 04 009383
- the liquid temperature at the bottom of the continuous multistage distillation column 50 supplied by circulating through 144 was 237 ° C., the overhead pressure was about 27 KPa, and the reflux ratio was about It was 2.
- the gas distilled from the top of the continuous multi-stage distillation column 50 passes through the conduit 51, and is condensed by the condenser 3 ⁇ 452, and is condensed by the conduit
- composition of the liquid withdrawn from conduit 55 is approximately 1-butanol.
- composition of the liquid drawn out to the storage tank 58 which was 1 wt%, was about 500 ppm for dibutyl carbonyl, about 26 wt% for butylphenol carbonate, and about 26 wt% for diphenyl carbonate.
- 65 wt% Pb concentration was about 8 wt%.
- Conduit (4) is approximately 0.4 cm below the bottom of the continuous multi-stage distillation column 61 with an inner diameter of about 5 cm and a length of 4 m filled with Dickson packing (6 mm ⁇ ). ⁇
- the liquid continuously withdrawn to storage tank 1338 is fed continuously from conduit 59 through preheater 60 at about 67 g / Hr, and distillation is performed.
- the heat required for separation is circulated through the lower part of the column via conduit 68 and reboiler 67. Supplied.
- the liquid temperature at the bottom of the continuous multistage distillation column 61 was 164 ° C.
- the pressure at the top of the column was about 53 KPa
- the reflux ratio was about 0.5.
- the gas distilled from the top of the continuous multi-stage distillation column 61 passes through a conduit 62, is condensed in a condenser 63, and is introduced into the alkanol storage tank 135 via the conduit 66 to about 18.2 g / Extracted continuously at H r. Approximately 48.8 g / from the bottom of the tower to storage tank 69 via conduit 68
- composition of the liquid extracted from the conduit 66 is approximately 1
- composition of the liquid extracted to 69 was about 1 wt% of dibutyl carbonate, about 100 ppm of 1-butanol, and about 98 wt% of phenol.
- Distilled gasket ⁇ (6 mm ⁇ ) packed into a storage tank 58 at the middle stage of a continuous multistage distillation column 72 with an inner diameter of about 5 cm and a length of 2 m with a tower length of 2 m (5).
- the separated liquid is fed continuously from a conduit 70 through a preheater 71 at about 315 g / Hr, and the amount of heat required for distillation separation by distillation at fT Was supplied by circulation through conduit 79 and reboiler 78.
- the liquid temperature at the bottom of the continuous multistage distillation column 72 is 210 t :, and the pressure at the top of the column is about 1.
- the composition of the liquid withdrawn from the conduit 77 was about 200 ppm of dibutyl-carbonate, about 29 wt% of butylphenol and about 71 wt% of diphenylcarbonate.
- Feeding was continuously performed at 8 g / Hr, and distillation separation was performed.
- the amount of heat required for the S fractionation was supplied by circulating the liquid at the bottom of the column through a conduit 90 and a reboiler 89, and the liquid temperature at the bottom of the continuous multistage distillation column 83 was 198.
- the top pressure was about 6 KPa, and the reflux ratio was about 6.
- the gas distilled from the top of the continuous multistage distillation column 83 was passed through a conduit 84, condensed in a condenser 85, and continuously extracted from the conduit 88 at about 90 g / Hr. From the bottom of the tower, it was continuously withdrawn through a pipe 90 to a storage tank 91 at about 198 g Hr.
- the composition of the liquid withdrawn from the conduit 88 was about 700 ppm of dibutyl carbonate, about 93 wt% of butyl phenol, and about 7 wt% of diphenyl carbonate. .
- the composition of the liquid withdrawn into the storage tank 91 was below the detection limit for butyl phenyl carbonate and about 100 wt% for diphenyl carbonate.
- the concentration of chlorine in the reaction solution is below the detection limit. 47
- Dioctyltin alkoxide was produced as follows using an apparatus as shown in FIG.
- the 1-butanol solution containing water was obtained in 7
- the liquid phase component in the reactor 1 was extracted and transferred from the extraction conduit 8 to the storage tank 9. From storage tank 9, it was transferred via conduit 10 to dealcoholizer 11 equipped with a stirrer, a device for reducing pressure, and a heating device.
- the reaction was performed for 4 hours while adjusting to M Pa
- 0.05 m 0 1 has been generated, and about 4 hours later, it is about 0.5 m.
- Step (2) was performed as follows using the arrangement shown in Fig. 4.
- the reaction solution obtained in the step (1) was withdrawn from the lower part of the autoclave, and transferred to a nitrogen-purged decarbonation tank 25 through a conduit 133.
- the mixture was heated and stirred under a nitrogen atmosphere at 80 at about 5 minutes, and the generated carbon dioxide was purged. Conduit from decarbonization tank 25
- a thin-film distillation apparatus 30 (Shibata Kagakusha E-420, Japan) was connected to a multi-stage distillation column 27 with an inner diameter of about 5 cm filled with Dixon Paso King (6 mm ⁇ ).
- the reaction liquid stored in the distillation column was supplied at a rate of about 90 g / Hr from the middle stage of the distillation column through a conduit 132 at a flow rate of about 90 g / Hr.
- the liquid was withdrawn at about 80 g Hr to 2, and the dibutyl carbonate in the liquid was below the detection limit.
- Step (3) was performed as follows using an apparatus as shown in FIG.
- the liquid extracted in the storage tank 32 in the step (2) was supplied to a 5 L stainless steel IKJ core 1 with a baffle through a conduit 35.
- One butanol was added from conduit 3 to about 222.3 g (30 m 0 1). 0.
- the liquid transferred to the storage tanks 23 was repeatedly recycled to the repetition process (1), and steps (1) to (3) were repeated.
- Step (4) was performed as follows using an apparatus as shown in FIG.
- the n-butyl carbonate transferred to the storage tank 29 in step (2) in the middle stage A mixture consisting of a reaction solution containing phenol and catalyst B (the weight ratio of dibutyl carbonate and phenol in the mixture is about 65/35, and the Pb concentration is about 1 wt%. Was adjusted to be as short as possible) and fed through a preheater 38 through a conduit 37 at a pressure of about 270 g / Hr continuously in a liquid state to carry out the reaction.
- the amount of heat required for the reaction and distillation was supplied by circulating the liquid at the bottom of the column through a conduit 46 and a reboiler 45.
- the liquid temperature at the bottom of the continuous multistage distillation column 39 was 239, the top pressure was about 250 KPa, and the reflux ratio was about 2.
- the gas distilled from the top of the continuous multi-stage distillation column 39 passes through the conduit 40 and is condensed in the condenser 41, and is condensed in the storage tank 1 38 through the conduit 44 to about 67 g ⁇
- the composition of the liquid withdrawn into the storage tank 47 is about 11 wt% of phenol, about 60 wt% of dibutyl carbonate, about 26 wt% of butylphenol carbonate, and about 1 wt% of diphenyl carbonate.
- About 1.6 wt% and Pb concentration about 1%
- Step (5) was carried out in the following step "5" using an apparatus as shown in Fig. 6.
- the liquid withdrawn from the storage tank 47 through the pre-heater 49 is fed continuously from the pipe 48 through the preheater 49 at a rate of about 203 g / hr in a liquid state, and the reaction is carried out.
- the amount of heat required for the reaction and distillation performed was
- the liquid temperature at the bottom of the continuous multi-stage distillation column 50 is 240 :, the top pressure is about 27 KPa, and the reflux ratio is about 2, and the liquid exits from the top of the continuous multi-stage distillation column 50.
- the conduit 5 1 to the condenser 5 Through the conduit 5 1 to the condenser 5
- composition of the liquid withdrawn from conduit 55 is about 1-about 100% of the corrected paper (Rule 91) 53
- the composition of the liquid drawn out to the storage tank 58 is about 0.3 wt% of dibutyl carbonate, about 32 wt% of butyl phenyl carbonate, about 61 wt% of diphenyl carbonyl, and about 61 wt% of Pb. The degree was about 7 wt%.
- a continuous multi-stage distillation column 61 with an inner diameter of about 5 cm and a length of 2 m filled with Dickson packing (6 mm ⁇ ) is placed about 0.7 m below the bottom of the column in the step (4).
- the liquid extracted continuously from the tank 138 to the storage tank 1338 is fed continuously from the conduit 59 through the preheater 60 at about 201 g / Hr, and distillation separation is performed.
- the amount of heat required for the 3 ⁇ 4S fractionation was supplied by circulating the liquid at the bottom of the column through a conduit 68 and a reboiler 67, and the liquid temperature at the bottom of the multi-stage distillation column 61 was 1 45:
- the top pressure was about 13 KPa, and the reflux ratio was about 0.3.
- the gas distilled from the top of the continuous multi-stage distillation tower 61 passes through the conduit 62, is condensed by the condenser 63, and is condensed to the alcohol storage tank 135 via the pipe 66 to about 68 g / hr. It was pulled out continuously by. From the bottom of the tower, it was continuously extracted at about 133 g / Hr into a storage tank 69 via a conduit 68.
- composition of the liquid extracted from the conduit 66 is approximately 99.9 wt%, storage tank filled with about 100 p ⁇ ⁇ m of phenol
- composition of the liquid extracted to 69 was about 2 wt% of dibutyl carbonate and about 98 wt% of phenol.
- the composition of the liquid withdrawn from the conduit 77 was about 0.3 wt% of diptyl carbonate, about 34 wt% of butyl ferr carbonate, and about 66 wt% of n-phenyl carbonate.
- a continuous multistage distillation column with an inner diameter of about 5 cm and a length of 2 m filled with dixon packing (6 mm ⁇ ) is used. Approximately 1 from 1 through preheater ⁇ 2 Continuous distillation was performed with 8 1 g ZHr, and fractionation was performed. Heat required for distillation separation Pipes the liquid at the bottom of the tower 90 and the U boiler 8
- the liquid temperature at the bottom of the column 3 was 2, 32, the pressure at the top of the column was about 16 KPa, and the reflux ratio was about 2.
- the gas distilled from the top of the distillation column 83 passes through the conduit 84, and is condensed in the condenser 85.
- the composition of the liquid extracted from the conduit 88 is composed of about 0.6 wt% of dibutyl-force, about 99 wt% of butylphenyl-force, and about 0.4 wt of diphenylcapone. %.
- the composition of the liquid withdrawn into the storage tank 91 was about 0.3 wt% of butylphenol carbonate and about 99.7 wt% of diphenyl carbonate.
- Dibutyltin alkoxide was produced as follows using an apparatus as shown in Fig. 3.
- Feeding of nitrogen gas was started from inert gas conduit 2 through the SUS pipe at LHr.
- Step (2) was performed as follows using an apparatus as shown in Fig. 4.
- reaction solution from step (1) was withdrawn from the lower part of the autoclave, transferred to a nitrogen-replaced decarbonation tank 25 through a conduit 133, and heated at 80 in a nitrogen atmosphere for about 5 minutes. With stirring, the generated carbon dioxide was purged. Conduit from decarbonation tank 25
- a thin-film distillation apparatus 30 (E-420, manufactured by Shibata Kagaku Co., Ltd., Japan) filled with dixon packing (6 mm ⁇ ) has an inner diameter of about 5 mm. of the reaction liquid stored in the storage tank 13 1 at a rate of about 80 g / Hr from the middle stage of the distillation column through the conduit 13 2 The ratio was about 0.2. Thin film still 3
- Dibutyl carbonate was extracted at 0.2 mol / H 2, and did not contain dibutyltin alkoxide.
- the liquid was withdrawn at approximately 77 g / H 2 into the storage tank 32, and dibutyl carbonate in the liquid was below the detection limit.
- Step (3) was performed as follows using an apparatus as shown in FIG.
- the liquid extracted in the storage tank 32 in the process (2) was supplied to a 5 L SUS reactor 1 equipped with a knotle via a conduit 35. 1 Approximately 889 g (12 mol) of kettle was collected from conduit 3. 0. 1
- the liquid inside the deaerator was heated, the pressure in the chamber was reduced, and unreacted alcohol was converted to a gaseous state, extracted from the conduit 21, and transferred to the storage casket 16 through the condenser 6.
- the liquid phase component was extracted and transferred to storage tank 23 through conduit 12.
- the liquid transferred to the storage tank 23 was repeatedly recycled to the step (1) where the steps (1) to (3) were repeatedly performed.
- Step (4) was carried out as follows using an apparatus as shown in FIG.
- a mixed solution consisting of phenol and catalyst B (all adjusted so that the ratio of dibutyl carbonate to phenol in the mixed solution is about 6535 and the Pb concentration is about 1 wt%) was fed through the preheater 38 to the conduit 37 continuously in a liquid state at about 2700 g / Hr.
- the liquid was supplied by circulating through a conduit 46 and a lipoiler 45.
- composition of the liquid extracted from the conduit 4 4 is about 1-butanol
- the composition of the liquid withdrawn into storage tank 47 is about 29 wt% of phenol, about 60 wt% of dibutyl carbonate, and butyl phenol carbonate.
- process (5) is performed as follows. Carried out.
- a continuous multistage distillation column 50 filled with Dixon Packinog (6 mm ⁇ ) and having an inner diameter of about 5 cm and a length of 2 m, it was withdrawn from the conduit 44 to the storage tank 47 in step (4).
- the liquid was continuously fed in a liquid form at about 25 g / Hr from a pipe 488 through a preheater 49, and the reaction was carried out. It was supplied by circulating through conduit 57 and U boiler 56.
- the liquid temperature at the bottom of the continuous multi-stage distillation column 50 is 235 ° C.
- the top pressure is about 26 KPa
- the reflux ratio is about 2.
- the top of the continuous multi-stage distillation column 50 is The gas distilled from the pipe passes through the pipe 51 and is condensed by the condenser 52, and is conveyed to the storage tank 1 26 through the pipe 55.
- composition of the liquid extracted from the conduit 55 is about 1-butanol.
- composition of the liquid discharged to the storage tank 58 is about 0.1 wt% of dibutyl carbonate, and about 0.1 wt% of butyl phenol carbonate.
- the gas distilled from the top of the continuous multi-stage distillation column 61 passes through the pipe 62, is condensed in the condenser 63, and is continuously transferred from the conduit 66 to the alcohol storage tank 135 at about 900 Hr. Was extracted. It was continuously extracted from the bottom of the tower via a conduit 68 to a storage tank 69 at about 78 g ZHr.
- composition of the liquid withdrawn from conduit 66 is 1-butanol, approximately 9
- composition of the liquid extracted to 9 is about 0.
- a continuous multi-stage distillation column 72 Stored in the middle stage of a continuous multi-stage distillation column 72 with an inner diameter of about 5 cm and a tower of 2 m packed with dipping gas packing (6 mm ⁇ ), as shown in Figure 5 (5)
- the liquid continuously withdrawn into tank 58 is fed continuously from pipe 70 through preheater 71 at approximately 163 g / Hr, and distillation separation is performed. Heat needed for Supplied the liquid at the bottom of the tower by circulating it through conduit 79 and reboiler 178.
- the liquid temperature at the bottom of the continuous multi-stage distillation column 72 is 210 and the pressure at the top of the column is about 1.
- the composition of the liquid withdrawn from the conduit 77 was about 01 wt% of dibutylcarbonate and about 0.1 wt% of butylphenylcarbonate. About 30 wt% of net and about 70 wt% of diphenyl carbohydrate Approximately 5 cm in inner diameter filled with dixon packing (6 mm ⁇ )
- the liquid continuously withdrawn from the conduit 77 to the middle stage of the 2 m continuous multi-stage distillation column 83 is passed through the conduit 81 to the preheater 82 to about 1 36 g /
- the mixture was continuously fed with H r and subjected to distillation separation.
- the amount of heat required for distillation and separation was supplied by circulating the liquid at the bottom of the column through a pipe 90 and a reboiler 89, and the liquid temperature at the bottom of the continuous multistage distillation column 83 was 23 ° C.
- the top pressure was about 17 KPa, and the return ratio was about 3.
- the gas distilled from the top of the continuous multi-stage steam tower 83 was passed through a conduit 84, condensed in a condenser 85, and continuously extracted from the conduit 88 at about 41 gHr. From the bottom of the tower, it was continuously extracted at approximately 95 g H1 "into a storage tank 91 via a conduit 90.
- composition of the liquid withdrawn from the pipe 88 was about 0.3% of dibutyl carbonate, about 99% by weight of petilphic carbonate, and about 0.3% of diphenyl-carbonate. %Met .
- the composition of the liquid discharged into the storage tank 91 is approximately
- Dibutyltin alkoxide was manufactured as follows using an apparatus as shown in Fig. 3.
- Step (2) was performed as follows using an apparatus as shown in FIG.
- reaction solution from step 1) was withdrawn from the lower part of the autoclave and transferred to a carbon dioxide-removed decarbonation tank 25.
- a nitrogen atmosphere In a nitrogen atmosphere
- the reaction solution containing dibutylcapone obtained in step (1) was placed in the middle stage of a continuous multistage distillation column 105 having an inner diameter of about 5 cm and a length of 2 m filled with Dickson packing (6 mm ⁇ ).
- the liquid was fed continuously at about 106 g / Hr from the pipe 1336 through the preheater 104, and was fed in liquid form at about 106 g / Hr. It was supplied by circulating through conduits 1 1 2 and reboilers 1 1 1.
- the liquid temperature at the bottom of the continuous multistage distillation column 105 is 1
- the overhead pressure was about 1 KPa and the reflux ratio was about 1.
- the gas distilled from the top of the continuous multistage distillation column 105 passes through the conduit 106, is condensed in the condenser 107, and is continuously extracted from the conduit 110 by about 12 g Hr. It contained no dibutyltin alkoxide. From the bottom of the tower, via conduit 1 1 2 It was continuously extracted at about 94 g / H 2 into 113, and the dibutyl carbonate in the liquid was below the detection limit.
- Step (3) was performed as follows using an apparatus as shown in FIG.
- the liquid transferred to the storage tank 23 was recycled to the step (1) for repeatedly performing the steps (1) to (3), and the steps (1) to (3) were repeated.
- step (4) was performed as follows.
- the reaction was carried out by continuously feeding a liquid in Hr.
- the heat required for the reaction and distillation was supplied by circulating the lower liquid of the column through conduit 46 and reboiler-45.
- Continuous multi-stage distillation tower 3 9 The liquid temperature at the bottom of the column was 230 :, the pressure at the top of the column was about 150 KPa, and the reflux ratio was about 2.
- the gas distilled from the top of the continuous multi-stage distillation column 39 passes through the conduit 40 and is condensed by the condenser 41, and the conduit
- composition of the liquid withdrawn from conduit 4 4 is approximately
- the composition of the liquid extracted into the storage tank 47 is about 12 wt% of phenol, about 68 wt% of dibutylcapone, about 17 wt% of butylphenol carbonate, and about 17 wt% of diphenylcapone.
- the concentration was about 1 wt%, and the Pb concentration was about 1 wt%.
- Step (5) was performed as follows using an apparatus as shown in Figure (6).
- a middle stage of a continuous multi-stage distillation column 50 with an inner diameter of about 5 cm and a length of 2 m filled with dixon packing (6 mm ⁇ ), it was withdrawn from the conduit 46 to the storage tank 47 through the middle stage (4).
- the liquid was continuously fed in a liquid form at about 203 g / H ⁇ from a conduit 48 through a preheater 49, and the reaction was carried out.
- the lower liquid was supplied by circulating through a conduit 57 and a reboiler 56.
- the liquid temperature at the bottom of the continuous multistage distillation column 50 was 237, the top pressure was about 26 KPa, and the reflux ratio was about 2.
- Continuous The gas distilled from the top of the 70-stage distillation column 50 passes through the conduit 51, is condensed in the condenser 52, and is condensed into the storage tank 1 26 through the conduit 55 to about 1 78 g /
- composition of the liquid withdrawn from the conduit 55 is approximately
- the results were as follows: 400 PPm, about 14 wt% of phenol, about 83 wt% of dibutylcapone, and about 3 wt% of butylphenol carbonate.
- the composition of the liquid drawn into storage tank 58 is as follows: '1 pt% of diptilka, approx. 1 wt% of butylphenol carpone
- the gas distilled from the top of the continuous multi-stage distillation column 61 is passed through a conduit 62, The mixture was condensed in the condenser 63 and continuously extracted from the conduit 66 to the alcohol storage tank 135 at about 44 g / Hr. From the bottom of the tower, it was continuously withdrawn at about 157 g / Hr into storage tank 69 via conduit 68.
- the composition of the liquid withdrawn from conduit 66 is approximately 1 unit.
- composition of the liquid extracted into 9 is about 4 wt% of dimethyl carbonate and about 96 wt% of phenol.
- a continuous multi-stage distillation column 72 with an inner diameter of about 5 cm and a length of 2 m filled with axon packing (6 mm ⁇ ), it was continuously extracted to the storage tank 58 in step (5).
- the liquid was continuously fed from the conduit 70 through the preheater 71 at about 252 g / Hr, and was subjected to distillation separation.The heat required for distillation separation was obtained.
- the liquid in the lower part of the column was circulated through a conduit 79 and a lipoiler 78 to supply the liquid.
- the liquid temperature at the bottom of the continuous multistage distillation column 72 is 210, and the pressure at the top of the column is about 1.
- the composition of the liquid extracted from the conduit 77 is about 01 wt% of dibutyl carbonate, and about 38 w of butyl xyl carbonate. t%, diphenyl carbonate was about 62 wt%.
- the liquid continuously withdrawn from the conduit 77 to the middle stage of the 2 m continuous multi-stage distillation column 83 is discharged from the conduit 81 through the preheater 82 to about 25 g /
- Distillation was performed by continuous feeding with H r.
- the amount of heat required for the distillation separation was supplied by circulating the liquid at the bottom of the column through a conduit 90 and a reboiler 89.
- the liquid temperature at the bottom of the continuous multi-stage distillation column 83 was 22 7:, the top pressure was about 13 KPa, and the recirculation ratio was about 4.
- the gas distilled from the top of the continuous multistage distillation column 83 was passed through a conduit 84, condensed in a condenser 85, and continuously extracted from the conduit 88 at about 87 g / Hr. From the bottom of the tower, it was continuously extracted at about 13.8 g / Hr into storage tank 91 via conduit 90.
- the composition of the liquid withdrawn from the conduit 88 was about 0.3 wt% of dibutyl carbonate, about 99 wt% of butylphenol, and about 0.1 to 1 wt% of diphenylcarbonate. Atsuta.
- the composition of the liquid withdrawn into the storage tank 91 was about 400 ppm of petil X-carbonate, and about 100 wt% of diphenyl carbonate.
- dibutyltin 13-oxide was produced as follows. 7 3 5 g (0.3 m 01) of dibutyltin oxide was put into the 5 L SUS reactor 1 equipped with a stirrer, a heating device and a baffle from the upper part 4 of the reactor 1, and the isobutanol (US) , A 1 drich) 2 2 2 3 g (30 m 0 1) was added to the upper part of the reactor 1 from the alcohol storage tank 16 by TC and added through the conduit 3.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Polyesters Or Polycarbonates (AREA)
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT04746852T ATE522493T1 (de) | 2003-06-27 | 2004-06-25 | Verfahren zur herstellung von aromatischem carbonat |
| CA002527698A CA2527698C (en) | 2003-06-27 | 2004-06-25 | Method for producing an aromatic carbonate |
| BRPI0411714-0A BRPI0411714B1 (pt) | 2003-06-27 | 2004-06-25 | Método para produzir um carbonato aromático |
| US10/562,814 US7652122B2 (en) | 2003-06-27 | 2004-06-25 | Method for producing an aromatic carbonate |
| EP04746852A EP1640357B1 (en) | 2003-06-27 | 2004-06-25 | Method for producing aromatic carbonate |
| JP2005511122A JP4137941B2 (ja) | 2003-06-27 | 2004-06-25 | 芳香族炭酸エステルの製造方法 |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003-185077 | 2003-06-27 | ||
| JP2003185077 | 2003-06-27 | ||
| JP2003-185078 | 2003-06-27 | ||
| JP2003185078 | 2003-06-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2005000783A1 WO2005000783A1 (ja) | 2005-01-06 |
| WO2005000783A9 true WO2005000783A9 (ja) | 2005-06-23 |
Family
ID=33554470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/009383 Ceased WO2005000783A1 (ja) | 2003-06-27 | 2004-06-25 | 芳香族炭酸エステルの製造方法 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US7652122B2 (ja) |
| EP (1) | EP1640357B1 (ja) |
| JP (1) | JP4137941B2 (ja) |
| KR (1) | KR100726925B1 (ja) |
| AT (1) | ATE522493T1 (ja) |
| BR (1) | BRPI0411714B1 (ja) |
| CA (1) | CA2527698C (ja) |
| RU (1) | RU2329250C2 (ja) |
| TW (1) | TW200524855A (ja) |
| WO (1) | WO2005000783A1 (ja) |
Families Citing this family (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2451495T3 (es) * | 2004-05-19 | 2014-03-27 | Asahi Kasei Chemicals Corporation | Procedimiento para la producción de alcóxidos de alquilestaño |
| US20090105470A1 (en) * | 2005-02-22 | 2009-04-23 | Pharmed Medicare Private Limited , A Corporation | Tin Mediated Regioselective Synthesis of Sucrose-6-Esters |
| CN101410166B (zh) | 2006-03-30 | 2011-06-15 | 旭化成化学株式会社 | 二氧化碳回收利用、传送用混合物 |
| US8008518B2 (en) | 2006-10-11 | 2011-08-30 | Asahi Kasei Chemicals Corporation | Process for producing dialkyl tin dialkoxides |
| JP4859255B2 (ja) * | 2006-11-17 | 2012-01-25 | 旭化成ケミカルズ株式会社 | イソシアネートの製造方法 |
| TW200844080A (en) * | 2007-01-11 | 2008-11-16 | Asahi Kasei Chemicals Corp | Process for producing isocyanate |
| CA2682512C (en) | 2007-03-30 | 2012-03-06 | Asahi Kasei Chemicals Corporation | Isocyanate production process using composition containing carbamic acid ester and aromatic hydroxy compound, and composition for transfer and storage of carbamic acid ester |
| EP1995233A3 (de) * | 2007-05-25 | 2010-06-02 | Bayer MaterialScience AG | Verfahren zur Herstellung von Diaryl- oder Arylalkylcarbonaten aus Dialkylcarbonaten |
| DE102007044033A1 (de) * | 2007-09-14 | 2009-03-19 | Bayer Materialscience Ag | Verfahren zur Herstellung von Diaryl- oder Alkylarylcarbonaten aus Dialkylcarbonaten |
| US8110698B2 (en) * | 2008-02-11 | 2012-02-07 | Shell Oil Company | Process for producing diphenyl carbonate |
| US7851645B2 (en) * | 2008-02-11 | 2010-12-14 | Catalytic Distillation Technologies | Process for continuous production of organic carbonates or organic carbamates and solid catalysts therefore |
| TWI408120B (zh) * | 2008-05-15 | 2013-09-11 | Asahi Kasei Chemicals Corp | A process for producing isocyanates using diaryl carbonates |
| CN102026965B (zh) * | 2008-05-15 | 2014-02-26 | 旭化成化学株式会社 | 异氰酸酯的制造方法 |
| BRPI0822695B1 (pt) * | 2008-05-15 | 2017-05-02 | Asahi Kasei Chemicals Corp | processo para produzir um isocianato |
| DE102008029514A1 (de) * | 2008-06-21 | 2009-12-24 | Bayer Materialscience Ag | Verfahren zur Herstellung von Diarylcarbonaten aus Dialkylcarbonaten |
| JP5579737B2 (ja) * | 2008-12-01 | 2014-08-27 | シエル・インターナシヨナル・リサーチ・マートスハツペイ・ベー・ヴエー | 有機カーボナート流からアルカノール不純物を除去する方法 |
| DE102009017862A1 (de) * | 2009-04-17 | 2010-10-21 | Bayer Materialscience Ag | Verfahren zur Herstellung von Diarylcarbonat |
| DE102009023940A1 (de) * | 2009-06-04 | 2010-12-09 | Bayer Materialscience Ag | Verfahren zur Herstellung von Polycarbonat |
| US8916731B2 (en) * | 2009-07-14 | 2014-12-23 | Ceramatec, Inc. | Dialkyl and diaryl ether production from metal alcoholate |
| US8809569B2 (en) | 2012-02-28 | 2014-08-19 | Saudi Basic Industries Corporation | Process for preparing dialkyl carbonate and diol products |
| US8735608B2 (en) | 2012-02-28 | 2014-05-27 | Saudi Basic Industries Corporation | Process for preparing carbonate and diol products |
| JP5650777B2 (ja) * | 2013-03-11 | 2015-01-07 | 旭化成ケミカルズ株式会社 | 炭酸ジアリールを用いるイソシアネートの製造方法 |
| US9844775B2 (en) | 2013-09-26 | 2017-12-19 | Asahi Kasei Kabushiki Kaisha | Alkyl tin compound |
| KR101659645B1 (ko) | 2013-10-02 | 2016-09-26 | 롯데첨단소재(주) | 방향족 탄산에스테르의 제조방법 |
| WO2016151487A1 (en) * | 2015-03-23 | 2016-09-29 | Sabic Global Technologies B.V. | Integrated method and apparatus for the production of aryl carbonates |
| CN113387801B (zh) * | 2021-06-30 | 2022-03-25 | 润泰新材料股份有限公司 | 一种十二碳醇酯的连续生产系统 |
| WO2023058681A1 (ja) | 2021-10-05 | 2023-04-13 | 旭化成株式会社 | 高純度ジアリールカーボネートの製造方法 |
| WO2023080258A1 (ja) | 2021-11-08 | 2023-05-11 | 旭化成株式会社 | カルボニル化合物、カルボニル化合物の製造方法、イソシアネート化合物の製造方法、及びイソシアネート組成物 |
| JPWO2024176969A1 (ja) * | 2023-02-22 | 2024-08-29 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3274214A (en) * | 1962-12-26 | 1966-09-20 | Gen Electric | Aromatic carbonates |
| JPS543012A (en) * | 1977-06-09 | 1979-01-11 | Mitsubishi Chem Ind Ltd | Preparation of carbonates |
| DE3203190A1 (de) * | 1982-01-30 | 1983-08-04 | Bayer Ag, 5090 Leverkusen | Herstellung von dialkyl- und diarylcarbonaten |
| US5034557A (en) * | 1988-04-16 | 1991-07-23 | Mitsui Petrochemical Industries, Ltd. | Process for production of aromatic carbonate compound |
| SU1698250A1 (ru) * | 1989-11-20 | 1991-12-15 | Уфимский Нефтяной Институт | Способ получени дифенилкарбоната |
| US5219933A (en) * | 1991-03-25 | 1993-06-15 | The Dow Chemical Company | Blends of polycarbonate and thermoplastic polyurethane resins containing an impact modifier |
| US5252771A (en) * | 1991-05-28 | 1993-10-12 | The Dow Chemical Company | Aluminum trifluoride catalyst for production of diaryl carbonates |
| JPH05331108A (ja) * | 1992-06-01 | 1993-12-14 | Mitsubishi Gas Chem Co Inc | 芳香族炭酸エステルの製造方法 |
| JPH06262085A (ja) * | 1993-03-09 | 1994-09-20 | Daicel Chem Ind Ltd | 炭酸ジエステル合成用触媒及び炭酸ジエステルの製造方法 |
| JPH0733715A (ja) * | 1993-07-23 | 1995-02-03 | Showa Denko Kk | 炭酸エステルの製造方法 |
| JP3385359B2 (ja) | 2000-03-07 | 2003-03-10 | 独立行政法人産業技術総合研究所 | 二酸化炭素とアルコールからの炭酸エステルの製造方法 |
| US7435842B2 (en) * | 2001-12-27 | 2008-10-14 | Asahi Kasei Chemicals Corporation | Process for producing carbonic ester |
| CN1328239C (zh) * | 2002-08-07 | 2007-07-25 | 旭化成化学株式会社 | 生产碳酸酯的方法 |
-
2004
- 2004-06-25 JP JP2005511122A patent/JP4137941B2/ja not_active Expired - Fee Related
- 2004-06-25 RU RU2006102364/04A patent/RU2329250C2/ru active
- 2004-06-25 TW TW093118731A patent/TW200524855A/zh not_active IP Right Cessation
- 2004-06-25 BR BRPI0411714-0A patent/BRPI0411714B1/pt not_active IP Right Cessation
- 2004-06-25 CA CA002527698A patent/CA2527698C/en not_active Expired - Lifetime
- 2004-06-25 EP EP04746852A patent/EP1640357B1/en not_active Expired - Lifetime
- 2004-06-25 KR KR1020057024896A patent/KR100726925B1/ko not_active Expired - Fee Related
- 2004-06-25 WO PCT/JP2004/009383 patent/WO2005000783A1/ja not_active Ceased
- 2004-06-25 US US10/562,814 patent/US7652122B2/en not_active Expired - Lifetime
- 2004-06-25 AT AT04746852T patent/ATE522493T1/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ATE522493T1 (de) | 2011-09-15 |
| JPWO2005000783A1 (ja) | 2006-09-28 |
| CA2527698A1 (en) | 2005-01-06 |
| KR100726925B1 (ko) | 2007-06-14 |
| EP1640357A1 (en) | 2006-03-29 |
| JP4137941B2 (ja) | 2008-08-20 |
| TWI296617B (ja) | 2008-05-11 |
| BRPI0411714B1 (pt) | 2015-06-02 |
| WO2005000783A1 (ja) | 2005-01-06 |
| EP1640357B1 (en) | 2011-08-31 |
| RU2329250C2 (ru) | 2008-07-20 |
| US7652122B2 (en) | 2010-01-26 |
| TW200524855A (en) | 2005-08-01 |
| RU2006102364A (ru) | 2006-07-27 |
| CA2527698C (en) | 2009-10-27 |
| KR20060027816A (ko) | 2006-03-28 |
| US20070055042A1 (en) | 2007-03-08 |
| EP1640357A4 (en) | 2006-08-02 |
| BRPI0411714A (pt) | 2006-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2005000783A9 (ja) | 芳香族炭酸エステルの製造方法 | |
| KR100545615B1 (ko) | 탄산에스테르의 제조 방법 | |
| KR100831518B1 (ko) | 알킬주석 알콕시드류의 제조 방법 | |
| KR101560439B1 (ko) | 디아릴카보네이트의 제조 방법 | |
| JP4264124B2 (ja) | ジアルキルスズジアルコキシドの分離回収方法 | |
| KR101042664B1 (ko) | 디알킬주석 디알콕시드의 제조 방법 | |
| JP2001064235A (ja) | ジアリールカーボネートの製造方法 | |
| EP1760069B1 (en) | Process for producing aromatic carbonate | |
| KR100858264B1 (ko) | 방향족 카르보네이트의 제조 방법 | |
| JP2007254309A (ja) | 新規炭酸エステル | |
| JP2007254361A (ja) | 新規炭酸エステル | |
| JP2007254358A (ja) | 新規炭酸エステル | |
| JP2007254360A (ja) | 新規炭酸エステル |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WWE | Wipo information: entry into national phase |
Ref document number: 200480024194.3 Country of ref document: CN |
|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| COP | Corrected version of pamphlet |
Free format text: PAGES 67, 69, 152, 161, 197, 206, 231, 239, 240, 242, 243, 257, 263, 264, 276, DESCRIPTION, REPLACED BY NEW PAGES 67, 69, 152, 161, 197, 206, 231, 239, 240, 242, 243, 257, 263, 264, 276; AFTER RECTIFICATION OF OBVIOUS ERRORS AUTHORIZED BY THE INTERNATIONAL SEARCH AUTHORITY PAGES 67, 69, 152, 161, 197, 206, 231, 239, 240, 242, 243, 257, 263, 264, |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2005511122 Country of ref document: JP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2004746852 Country of ref document: EP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2527698 Country of ref document: CA Ref document number: 02421/KOLNP/2005 Country of ref document: IN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 1020057024896 Country of ref document: KR |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2007055042 Country of ref document: US Ref document number: 10562814 Country of ref document: US |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2006102364 Country of ref document: RU |
|
| WWP | Wipo information: published in national office |
Ref document number: 1020057024896 Country of ref document: KR |
|
| WWP | Wipo information: published in national office |
Ref document number: 2004746852 Country of ref document: EP |
|
| DPEN | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101) | ||
| ENP | Entry into the national phase |
Ref document number: PI0411714 Country of ref document: BR |
|
| WWP | Wipo information: published in national office |
Ref document number: 10562814 Country of ref document: US |