GB306132A - Manufacture of chlorinated organic acid esters of cellulose - Google Patents
Manufacture of chlorinated organic acid esters of celluloseInfo
- Publication number
- GB306132A GB306132A GB4146/29A GB414629A GB306132A GB 306132 A GB306132 A GB 306132A GB 4146/29 A GB4146/29 A GB 4146/29A GB 414629 A GB414629 A GB 414629A GB 306132 A GB306132 A GB 306132A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cellulose
- ethanol
- chlorine
- mixture
- dissolved
- 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
- C08B3/14—Preparation of cellulose esters of organic acids in which the organic acid residue contains substituents, e.g. NH2, Cl
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
306,132. I. G. Farbenindustrie Akt.- Ges. Feb. 17, 1928, [Convention date]. Cellulose carboxylates. - Cellulose esters of saturated organic acids are dissolved or suspended in an indifferent medium and treated' with a chlorinating agent, whereby chlorination can be effected, if desired, until all the hydrogen atoms of the acid radical of the cellulose carboxylate have been substituted by chlorine. The cellulose halogen carboxylates show increased stability towards hydrolytic agents and possess enhanced solubility. In examples, cellulose triacetate dissolved in tatrachlorethane is treated with phosphorous pentachlorideand the purified products, obtained by pouring the mixture into ethanol and washing the precipitate with ethanol and ether, contain from 5.0 to over 53 per cent of chlorine and are soluble in acetone; cellulose triacetate is dissolved in a mixture of chloroform and tetrachlorethane, phosphorous trichloride is added and the mixture exposed to sunlight whilst chlorine is passed into it to give a product containing 31 per cent of chlorine and soluble in acetone, chloroform, bromoform, ethyl acetate or hot benzene; cellulose trilaurate dissolved in a mixture of tetrachlorethane and carbon tetrachloride is heated with phosphorous pentachloride and the purified product, obtained by pouring the mixture into ethanol, kneading the precipitate several times with ethanol and repeatedly redissolving the chlorinated ester in ether and reprecipitating it with ethanol, contains about 16.5 per cent of chlorine.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE306132X | 1928-02-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB306132A true GB306132A (en) | 1930-04-03 |
Family
ID=6121036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4146/29A Expired GB306132A (en) | 1928-02-17 | 1929-02-07 | Manufacture of chlorinated organic acid esters of cellulose |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB306132A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4219517A (en) | 1978-10-12 | 1980-08-26 | Puropore Inc. | Process for spinning dense hollow fiber cellulosic membrane |
-
1929
- 1929-02-07 GB GB4146/29A patent/GB306132A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4219517A (en) | 1978-10-12 | 1980-08-26 | Puropore Inc. | Process for spinning dense hollow fiber cellulosic membrane |
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