EP1718588A1 - Method for producing alkylene glycol diethers - Google Patents
Method for producing alkylene glycol diethersInfo
- Publication number
- EP1718588A1 EP1718588A1 EP05761400A EP05761400A EP1718588A1 EP 1718588 A1 EP1718588 A1 EP 1718588A1 EP 05761400 A EP05761400 A EP 05761400A EP 05761400 A EP05761400 A EP 05761400A EP 1718588 A1 EP1718588 A1 EP 1718588A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- microreactor
- reaction
- methyl
- acid
- alkylene glycol
- 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.)
- Withdrawn
Links
- -1 alkylene glycol Chemical compound 0.000 title claims abstract description 18
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 title claims abstract description 14
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 title abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 239000002841 Lewis acid Substances 0.000 claims abstract description 10
- 150000007517 lewis acids Chemical class 0.000 claims abstract description 10
- 125000002947 alkylene group Chemical group 0.000 claims abstract description 8
- 150000004292 cyclic ethers Chemical class 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 22
- 125000000217 alkyl group Chemical group 0.000 claims description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 6
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 claims description 5
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 5
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 4
- 150000002170 ethers Chemical class 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical group O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 150000005309 metal halides Chemical class 0.000 claims description 3
- 229910052755 nonmetal Inorganic materials 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 2
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 claims description 2
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 claims description 2
- 150000008065 acid anhydrides Chemical class 0.000 claims description 2
- 125000004429 atom Chemical group 0.000 claims description 2
- 150000001805 chlorine compounds Chemical class 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- 150000002367 halogens Chemical class 0.000 claims description 2
- LYGJENNIWJXYER-UHFFFAOYSA-N nitromethane Chemical compound C[N+]([O-])=O LYGJENNIWJXYER-UHFFFAOYSA-N 0.000 claims description 2
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 2
- 229920001515 polyalkylene glycol Polymers 0.000 claims description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 2
- JLGLQAWTXXGVEM-UHFFFAOYSA-N triethylene glycol monomethyl ether Chemical compound COCCOCCOCCO JLGLQAWTXXGVEM-UHFFFAOYSA-N 0.000 claims description 2
- 125000006539 C12 alkyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000011541 reaction mixture Substances 0.000 description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229910015900 BF3 Inorganic materials 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 239000012442 inert solvent Substances 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- NIOYEYDJTAEDFH-UHFFFAOYSA-N 1-(2-hydroxyethoxy)-2-methylpropan-2-ol Chemical compound CC(C)(O)COCCO NIOYEYDJTAEDFH-UHFFFAOYSA-N 0.000 description 1
- LIRNFNXOTBZTPP-UHFFFAOYSA-N 1-[2-(2-hydroxyethoxy)ethoxy]-2-methylpropan-2-ol Chemical compound CC(C)(O)COCCOCCO LIRNFNXOTBZTPP-UHFFFAOYSA-N 0.000 description 1
- KIUSAGRHARPIAS-UHFFFAOYSA-N 1-[2-[2-(2-hydroxyethoxy)ethoxy]ethoxy]-2-methylpropan-2-ol Chemical compound CC(C)(O)COCCOCCOCCO KIUSAGRHARPIAS-UHFFFAOYSA-N 0.000 description 1
- VZBOUOZQNALIMM-UHFFFAOYSA-N 1-[2-[2-[2-(2-hydroxyethoxy)ethoxy]ethoxy]ethoxy]-2-methylpropan-2-ol Chemical compound CC(C)(O)COCCOCCOCCOCCO VZBOUOZQNALIMM-UHFFFAOYSA-N 0.000 description 1
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
- 229910018287 SbF 5 Inorganic materials 0.000 description 1
- AWMVMTVKBNGEAK-UHFFFAOYSA-N Styrene oxide Chemical compound C1OC1C1=CC=CC=C1 AWMVMTVKBNGEAK-UHFFFAOYSA-N 0.000 description 1
- 238000006959 Williamson synthesis reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000007171 acid catalysis Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- OWBTYPJTUOEWEK-UHFFFAOYSA-N butane-2,3-diol Chemical compound CC(O)C(C)O OWBTYPJTUOEWEK-UHFFFAOYSA-N 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 230000033077 cellular process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 150000001923 cyclic compounds Chemical class 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 1
- BTVWZWFKMIUSGS-UHFFFAOYSA-N dimethylethyleneglycol Natural products CC(C)(O)CO BTVWZWFKMIUSGS-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011964 heteropoly acid Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011968 lewis acid catalyst Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000013076 target substance Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/01—Preparation of ethers
- C07C41/02—Preparation of ethers from oxiranes
Definitions
- the present invention relates to a process for the production of chain-shaped alkylene glycol diethers in the microreactor.
- Alkylene glycol diethers have long been used as polar, inert solvents. Indirect processes such as the Williamson ether synthesis (K. Weissermel, HJ Arpe “Industrial Organic Chemistry”, 1998, page 179) or the hydrogenation of diglycol ether formal (DE-A-24 34 057) are used industrially or for their preparation described, as well as direct processes such as, for example, the insertion of alkylene oxide into a chain ether in the presence of Lewis acids such as BF 3 (US Pat. No. 4,146,736 and DE-A-26 40 505 in conjunction with DE-A-31 28 962) or SnCI 4 (DE-A-30 25 434).
- Lewis acids such as BF 3 (US Pat. No. 4,146,736 and DE-A-26 40 505 in conjunction with DE-A-31 28 962) or SnCI 4 (DE-A-30 25 434).
- microreactors In order to achieve a uniform product quality, the process parameters such as temperature, time and mixing must be checked. It is known from DD 246 257 A1 that miniaturized process engineering apparatuses can be used for chemical reactions. It is known to carry out certain chemical reactions in microreactors.
- microreactors stands for micro and mini reactors, which differ due to the dimensions and structure of the microstructured reaction channels. Microreactors also include a combination of a static micromixer and a temperature-controlled retention zone connected to it (a continuous tubular reactor), e.g. understood a capillary.
- Microreactors are constructed from stacks of structured plates and are described, for example, in the patent specification DE 39 26 466 C2.
- the present invention was therefore based on the object of finding a process for producing chain-shaped alkylene glycol diethers in which the process parameters can be mastered well in order to achieve uniform product quality.
- the process should also enable improved plant safety and simple, fast transfer from the laboratory scale to the technical scale.
- the present invention relates to the use of a microreactor for the production of alkylene glycol diethers by a direct Lewis acid-catalyzed production process under pressure.
- microreactor offers a higher level of safety (low molecular weight alkylene glycol diethers such as monoethylene glycol dimethyl ethers are toxic and carcinogenic) because the reaction volume in microreactors is particularly low compared to conventional batch processes.
- the invention relates to a method for producing
- Alkylene glycol diethers by reacting a linear or cyclic ether with an alkylene oxide in the presence of a Lewis acid, characterized in that the reaction is carried out continuously in a microreactor.
- the linear or cyclic ethers, the alkylene oxide and the required Lewis acid are metered into the reactor in liquid form (if necessary under pressure).
- the quantities are controlled, for example, via mass flow meters or a gravimetric metering control.
- the reaction is carried out at a pressure of 0 to 30 bar (above atmospheric pressure), preferably at a pressure of 8 to 20 bar, and at a temperature of 0 ° C. to 200 ° C., preferably 20 ° C. to 150 ° C.
- the reaction mixture with the resulting product is brought to normal pressure in a flash vessel and then worked up.
- Suitable ethers which can be used as starting materials for the process according to the invention are various ethers with lower alkyl groups and in particular those of the general formula I:
- R 1 is a Ci to C ⁇ 2 alkyl group
- R 2 is a Ci to C ⁇ 2 alkyl group or a phenyl or benzyl group, or wherein R 1 and R 2 , including the oxygen atom, a ring with 5, 6 or 7 atoms form.
- R 1 and R 2 are preferably independently of one another C 1 -C 4 -alkyl, in particular methyl or ethyl.
- R 1 and R 2 form a ring, this corresponds to the formula where n is 2, 3 or 4.
- a preferred cyclic compound is tetrahydrofuran.
- R represents hydrogen, halogen, an alkyl group having 1 to 10 carbon atoms, a phenyl or a benzyl group.
- alkylene oxides examples include ethylene oxide, propylene oxide, butylene oxide, epichlorohydrin, styrene oxide and the mixture of these compounds. Ethylene oxide and propylene oxide are particularly preferred.
- R 2 Ci to Ci2-alkyl or a phenyl or benzyl group x is an integer from 1 to 6 y is an integer from 1 to 20.
- R 1 and R 2 are preferably a methyl or ethyl group, in particular one Methyl group.
- Lewis acids to be used in the process according to the invention can be very different in their composition and structure.
- Lewis acids (individually or in combination) in the form of metal and non-metal halides such as, for example, BF 3 , AICI 3 , FeCI 3 , SnCI, PF 5 , SbF 5> , are preferably suitable; in the form of hydrogen acids, such as HBF 4 , HB0 2 ; in the form of heteropolyacids such as tungsten heteropolyacid; in the form of coordination complexes of metal and non-metal halides with organic compounds, such as haloalkylene, ethers, acid chlorides, acid esters or acid anhydrides.
- trialkyloxonium salt complexes with identical or different alkyl groups analogous acylium salt complexes and unsaturated tertiary oxonium salts, the tertiary carboxonium salts.
- Solvents can be used in the process according to the invention if they give advantages in the preparation of catalysts, for example to increase the solubility and / or to increase / decrease the viscosity and / or to dissipate heat of reaction.
- inert solvents such as dichloromethane, nitromethane, benzene, toluene, acetone, ethyl acetate, or dioxane or active solvents such as methanol, ethanol, propanol, butanol, methyl glycol, methyl diglycol, methyl triglycol, or the target substances themselves such as mono-, di, tri , Tetra or polyalkylene glycol dimethyl ether.
- alkylene glycol diethers can be produced in good yield in a continuous process in the microreactor, if appropriate in combination with further discontinuous process steps (e.g. production of starting material or catalyst mixtures, working up of the reaction mixture).
- Microreactors such as are known from the prior art can be used, for example commercially available microreactors, such as, for example, that on Cytos TM based Selecto TM from Cellular Process Chemistry GmbH, Frankfurt am Main.
- Microreactors with two or more reaction zones can also be used for the individual reaction steps.
- the microreactor is made up of several stacked and interconnected platelets, on the surfaces of which there are micromechanically generated structures which, in their interaction, form reaction spaces in which chemical reactions take place.
- the preferred microreactor is made of stainless steel; other materials such as glass, ceramics, silicon, plastics or other metals are also used.
- a suitable microreactor is shown in the description and in FIG. 1 of DE-A-100 40 100.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004007561A DE102004007561B3 (en) | 2004-02-17 | 2004-02-17 | Process for the preparation of alkylene glycol diethers |
| PCT/EP2005/001236 WO2005087695A1 (en) | 2004-02-17 | 2005-02-08 | Method for producing alkylene glycol diethers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1718588A1 true EP1718588A1 (en) | 2006-11-08 |
Family
ID=34960602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05761400A Withdrawn EP1718588A1 (en) | 2004-02-17 | 2005-02-08 | Method for producing alkylene glycol diethers |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20070185353A1 (en) |
| EP (1) | EP1718588A1 (en) |
| JP (1) | JP2007522250A (en) |
| DE (1) | DE102004007561B3 (en) |
| WO (1) | WO2005087695A1 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1817102A1 (en) | 2004-11-12 | 2007-08-15 | Velocys, Inc. | Process using microchannel technology for conducting alkylation or acylation reaction |
| DE102007057146A1 (en) | 2007-11-28 | 2009-06-04 | Evonik Goldschmidt Gmbh | Process for the preparation of polyether alcohols with DMC catalysts using special additives with aromatic hydroxy functionalization |
| DE102007057145A1 (en) | 2007-11-28 | 2009-06-04 | Evonik Goldschmidt Gmbh | Process for the preparation of polyether alcohols with DMC catalysts using compounds bearing SiH groups as additives |
| DE102008000360A1 (en) | 2008-02-21 | 2009-08-27 | Evonik Goldschmidt Gmbh | New alkoxysilyl-carrying polyether alcohols by alkoxylation of epoxide-functional alkoxysilanes to double metal cyanide (DMC) catalysts, and to processes for their preparation |
| DE102008000903A1 (en) | 2008-04-01 | 2009-10-08 | Evonik Goldschmidt Gmbh | New polyether alcohols carrying organosiloxane groups by alkoxylation of epoxide-functional (poly) organosiloxanes on double metal cyanide (DMC) catalysts, and also processes for their preparation |
| DE102008002713A1 (en) | 2008-06-27 | 2009-12-31 | Evonik Goldschmidt Gmbh | New polyether siloxanes containing alkoxylation products by direct alkoxylation of organo-modified alpha, omega-dihydroxysiloxanes on double metal cyanide (DMC) catalysts, and to processes for their preparation |
| DE102008043245A1 (en) | 2008-10-29 | 2010-05-06 | Evonik Goldschmidt Gmbh | Silicone polyether copolymer systems and processes for their preparation by alkoxylation reaction |
| DE102008043343A1 (en) | 2008-10-31 | 2010-05-06 | Evonik Goldschmidt Gmbh | Silicone polyether block copolymers with defined polydispersity in the polyoxyalkylene part and their use as stabilizers for the production of polyurethane foams |
| DE102009002371A1 (en) | 2009-04-15 | 2010-10-21 | Evonik Goldschmidt Gmbh | Process for the preparation of odorless polyether alcohols by means of DMC catalysts and their use in cosmetic and / or dermatological preparations |
| DE102010003672A1 (en) | 2010-04-07 | 2011-10-13 | Evonik Goldschmidt Gmbh | Preparation and Use of Metal Salts of Alkyl Oxide and / or Aryl Alkoxylate Oligomers and Acid Terminated Polymers in the Preparation of Polyurethane Systems |
| DE102010029235A1 (en) | 2010-05-21 | 2011-11-24 | Evonik Degussa Gmbh | Hydrophilic polyisocyanates |
| DE102010039004A1 (en) | 2010-08-06 | 2012-02-09 | Evonik Goldschmidt Gmbh | Silicone copolymers with pendent alkyl ethers attached via allyl glycidyl ether and related compounds and their use as stabilizers for the production of flexible polyurethane foams |
| DE102010039140A1 (en) | 2010-08-10 | 2012-02-16 | Evonik Goldschmidt Gmbh | Dispersants and process for their preparation |
| DE102011076019A1 (en) | 2011-05-18 | 2012-11-22 | Evonik Goldschmidt Gmbh | Alkoxylation products and processes for their preparation by means of DMC catalysts |
| DE102013208328A1 (en) | 2013-05-07 | 2014-11-13 | Evonik Industries Ag | Polyoxyalkylenes with pendant long-chain acyloxy and process for their preparation by means of DMC catalysts |
| DE102014209355A1 (en) | 2014-05-16 | 2015-11-19 | Evonik Degussa Gmbh | Guanidine-containing polyoxyalkylenes and methods of preparation |
| CN105582811B (en) * | 2014-11-16 | 2018-04-17 | 浙江创世雷博科技有限公司 | A kind of purification of raw materials method for Separation of Boron Isotopes |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2434057C2 (en) * | 1974-07-16 | 1982-08-19 | Hoechst Ag, 6000 Frankfurt | Process for the production of glycol dimethyl ethers |
| DE2640505C2 (en) * | 1976-09-09 | 1978-08-31 | Hoechst Ag, 6000 Frankfurt | Process for the production of ethers |
| DE3025434C2 (en) * | 1979-07-04 | 1982-09-16 | Nisso Petrochemical Industry Co., Ltd., Tokyo | Process for making alkylene glycol dieters |
| DE3128962A1 (en) * | 1981-07-22 | 1983-02-10 | Hoechst Ag, 6000 Frankfurt | Process for preparing alkylene glycol diethers |
| US4579982A (en) * | 1984-03-28 | 1986-04-01 | Union Carbide Corporation | Preparation of monoalkylene glycols using two liquid phase reaction menstruum |
| US4760200A (en) * | 1985-12-31 | 1988-07-26 | Union Carbide Corporation | Process for the production of alkylene glycols |
| DD246257A1 (en) * | 1986-01-21 | 1987-06-03 | Akad Wissenschaften Ddr | PROCESS TECHNICAL MICROPEPARATURES AND METHOD FOR THE PRODUCTION THEREOF |
| DE3926466C2 (en) * | 1989-08-10 | 1996-12-19 | Christoph Dipl Ing Caesar | Microreactor for carrying out chemical reactions of two chemical substances with strong heat |
| US5811062A (en) * | 1994-07-29 | 1998-09-22 | Battelle Memorial Institute | Microcomponent chemical process sheet architecture |
| CZ20022724A3 (en) * | 2000-02-09 | 2002-12-11 | Clariant Finance Bvi Ltd | Method for prodn. of azo dyes in microreactors |
| DE10040100A1 (en) * | 2000-08-16 | 2002-02-28 | Clariant Gmbh | Production of azo dyes and pigments, useful e.g. in plastics, resin, lacquer, paint, electrophotographic toner or developer, ink or dyeing or printing, uses microreactor in one or more stages |
| WO2006024167A1 (en) * | 2004-08-31 | 2006-03-09 | Total Synthesis Ltd. | Method and apparatus for performing micro-scale chemical reactions |
-
2004
- 2004-02-17 DE DE102004007561A patent/DE102004007561B3/en not_active Expired - Fee Related
-
2005
- 2005-02-08 WO PCT/EP2005/001236 patent/WO2005087695A1/en not_active Ceased
- 2005-02-08 EP EP05761400A patent/EP1718588A1/en not_active Withdrawn
- 2005-02-08 JP JP2006553488A patent/JP2007522250A/en not_active Withdrawn
- 2005-02-08 US US10/590,187 patent/US20070185353A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005087695A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102004007561B3 (en) | 2005-10-13 |
| WO2005087695A1 (en) | 2005-09-22 |
| US20070185353A1 (en) | 2007-08-09 |
| JP2007522250A (en) | 2007-08-09 |
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