GB491583A - Process for the production of cellulose esters - Google Patents
Process for the production of cellulose estersInfo
- Publication number
- GB491583A GB491583A GB32776/36A GB3277636A GB491583A GB 491583 A GB491583 A GB 491583A GB 32776/36 A GB32776/36 A GB 32776/36A GB 3277636 A GB3277636 A GB 3277636A GB 491583 A GB491583 A GB 491583A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cellulose
- water
- anhydride
- benzol
- treated
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
- C08B1/02—Rendering cellulose suitable for esterification
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
Cellulose is pretreated prior to esterification, by treatment with a liquid which is capable of swelling cellulose and also of combining chemically with the water in the cellulose. The liquid may consist of a single component or a mixture of components, of which at least one will swell the cellulose and at least one will combine chemically with the water. In a modification, the cellulose is treated first with a swelling agent miscible with water, freed as completely as possible from the swelling agent, and then treated with the agent for combining with the water. In examples, cellulose is treated with (1) acetic anhydride, (2) acetic acid and acetic anhydride, (3) benzol, acetic anhydride and butyric anhydride, (4) phosphoric acid anhydride, acetic acid and benzol, and (5) acetic acid, followed by treatment with benzol and acetic anhydride.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT491583X | 1935-12-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB491583A true GB491583A (en) | 1938-09-05 |
Family
ID=3675154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32776/36A Expired GB491583A (en) | 1935-12-03 | 1936-11-30 | Process for the production of cellulose esters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB491583A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2603637A (en) * | 1950-05-18 | 1952-07-15 | Celanese Corp | Preparation of organic acid esters of cellulose |
| US2646429A (en) * | 1951-06-08 | 1953-07-21 | Eastman Kodak Co | Manufacture of cellulose acetate with sulfoacetic pretreatment |
| CN113185622A (en) * | 2021-04-29 | 2021-07-30 | 华南理工大学 | High-phosphorus-content chitosan derivative, preparation method thereof and application thereof in loading of nano zero-valent iron |
-
1936
- 1936-11-30 GB GB32776/36A patent/GB491583A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2603637A (en) * | 1950-05-18 | 1952-07-15 | Celanese Corp | Preparation of organic acid esters of cellulose |
| US2646429A (en) * | 1951-06-08 | 1953-07-21 | Eastman Kodak Co | Manufacture of cellulose acetate with sulfoacetic pretreatment |
| CN113185622A (en) * | 2021-04-29 | 2021-07-30 | 华南理工大学 | High-phosphorus-content chitosan derivative, preparation method thereof and application thereof in loading of nano zero-valent iron |
| CN113185622B (en) * | 2021-04-29 | 2022-05-24 | 华南理工大学 | High-phosphorus-content chitosan derivative, preparation method thereof and application thereof in loading of nano zero-valent iron |
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