GB437907A - Improvements in or relating to the treatment of cellulose esters - Google Patents
Improvements in or relating to the treatment of cellulose estersInfo
- Publication number
- GB437907A GB437907A GB2222134A GB2222134A GB437907A GB 437907 A GB437907 A GB 437907A GB 2222134 A GB2222134 A GB 2222134A GB 2222134 A GB2222134 A GB 2222134A GB 437907 A GB437907 A GB 437907A
- Authority
- GB
- United Kingdom
- Prior art keywords
- catalyst
- acid
- cellulose
- reaction
- esterifying
- 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.)
- Expired
Links
- 229920002678 cellulose Polymers 0.000 title abstract 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract 6
- 239000003054 catalyst Substances 0.000 abstract 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract 3
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 abstract 3
- 239000000126 substance Substances 0.000 abstract 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 2
- 239000001913 cellulose Substances 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 abstract 2
- 239000002904 solvent Substances 0.000 abstract 2
- 239000001117 sulphuric acid Substances 0.000 abstract 2
- 235000011149 sulphuric acid Nutrition 0.000 abstract 2
- KJCVRFUGPWSIIH-UHFFFAOYSA-N 1-naphthol Chemical class C1=CC=C2C(O)=CC=CC2=C1 KJCVRFUGPWSIIH-UHFFFAOYSA-N 0.000 abstract 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract 1
- 230000000397 acetylating effect Effects 0.000 abstract 1
- 238000006640 acetylation reaction Methods 0.000 abstract 1
- 239000003377 acid catalyst Substances 0.000 abstract 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 abstract 1
- 150000001342 alkaline earth metals Chemical class 0.000 abstract 1
- HMOHOVASWYMMHA-UHFFFAOYSA-L barium(2+);diphenoxide Chemical compound [Ba+2].[O-]C1=CC=CC=C1.[O-]C1=CC=CC=C1 HMOHOVASWYMMHA-UHFFFAOYSA-L 0.000 abstract 1
- 150000001558 benzoic acid derivatives Chemical class 0.000 abstract 1
- AVVIDTZRJBSXML-UHFFFAOYSA-L calcium;2-carboxyphenolate;dihydrate Chemical compound O.O.[Ca+2].OC1=CC=CC=C1C([O-])=O.OC1=CC=CC=C1C([O-])=O AVVIDTZRJBSXML-UHFFFAOYSA-L 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 230000032050 esterification Effects 0.000 abstract 1
- 238000005886 esterification reaction Methods 0.000 abstract 1
- 150000002148 esters Chemical class 0.000 abstract 1
- 150000007522 mineralic acids Chemical class 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- -1 oleates Chemical class 0.000 abstract 1
- 150000007524 organic acids Chemical class 0.000 abstract 1
- 150000004707 phenolate Chemical class 0.000 abstract 1
- 229910052700 potassium Inorganic materials 0.000 abstract 1
- 239000011591 potassium Substances 0.000 abstract 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 abstract 1
- 150000003873 salicylate salts Chemical class 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical class [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B3/00—Preparation of cellulose esters of organic acids
- C08B3/22—Post-esterification treatments, including purification
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Residual catalyst is separated from a cellulose ester, prepared by esterification of cellulose with an organic acid in the presence of an inorganic acid catalyst and a non-solvent for the ester, by adding to the reaction mass, before or after removal of the esterifying liquor, a substance that is soluble in the esterifying liquor or in the non-solvent, and is reactive with the residual catalyst to form an insoluble compound. Suitable substances are alcoholates, phenolates, naphtholates, oleates, stearates, salicylates, and benzoates. In the case of having phosphoric or sulphuric acid as catalyst, the alkaline earth metal or lead salts of such substances may be used. When perchloric acid is the catalyst, a potassium salt is suitable, e.g. potassium alcoholate. In an example, cellulose is pretreated with acetic acid and sulphuric acid and acetylated by means of acetic anhydride in the presence of benzene. Towards the end of the reaction, calcium salicylate is added. In a second example, the acetylation reaction of the first example is completed without addition of the precipitant, the acetylating mixture is removed and replaced by benzene containing barium phenolate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2222134A GB437907A (en) | 1934-07-30 | 1934-07-30 | Improvements in or relating to the treatment of cellulose esters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2222134A GB437907A (en) | 1934-07-30 | 1934-07-30 | Improvements in or relating to the treatment of cellulose esters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB437907A true GB437907A (en) | 1935-11-07 |
Family
ID=10175879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2222134A Expired GB437907A (en) | 1934-07-30 | 1934-07-30 | Improvements in or relating to the treatment of cellulose esters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB437907A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5142034A (en) * | 1990-04-16 | 1992-08-25 | Eastman Kodak Company | Cellulose ester compositions and process for the preparation thereof |
-
1934
- 1934-07-30 GB GB2222134A patent/GB437907A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5142034A (en) * | 1990-04-16 | 1992-08-25 | Eastman Kodak Company | Cellulose ester compositions and process for the preparation thereof |
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