GB291360A - Improved manufacture of cellulose esters - Google Patents
Improved manufacture of cellulose estersInfo
- Publication number
- GB291360A GB291360A GB15822/28A GB1582228A GB291360A GB 291360 A GB291360 A GB 291360A GB 15822/28 A GB15822/28 A GB 15822/28A GB 1582228 A GB1582228 A GB 1582228A GB 291360 A GB291360 A GB 291360A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cellulose
- treated
- cellulose esters
- halide
- organic base
- 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
- C08B3/00—Preparation of cellulose esters of organic acids
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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
291,360. I. G. Farbenindustrie Akt.- Ges. May 30, 1927, [Convention date]. Cellulose carboxylates. - Cellulose esters of fatty acids are prepared by a process in which ordinary or pre-treated cellulose is treated with a halide of a lower fatty acid in presence of an organic base and an indifferent organic medium, which dissolves, at least partly, the addition product of acid halide and organic base formed in the esterification mixture but is not a solvent for the cellulose ester, which is formed. Halogen aromatic hydrocarbons are particularly suitable for use as the indifferent organic medium. In an example, cotton is added to a mixture of chlorobenzene, pyridine and acetyl chloride. When formation of the cellulose ester is finished, the liquid is decanted from the cellulose acetate and the latter is purified by extracting it with boiling ethanol and then with hot water.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE291360X | 1927-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB291360A true GB291360A (en) | 1928-09-27 |
Family
ID=6067451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15822/28A Expired GB291360A (en) | 1927-05-30 | 1928-05-30 | Improved manufacture of cellulose esters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB291360A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2492442A (en) * | 1944-03-16 | 1949-12-27 | American Viscose Corp | Method of producing esters of cellulose |
-
1928
- 1928-05-30 GB GB15822/28A patent/GB291360A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2492442A (en) * | 1944-03-16 | 1949-12-27 | American Viscose Corp | Method of producing esters of cellulose |
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