GB402730A - Manufacture of cellulose esters - Google Patents
Manufacture of cellulose estersInfo
- Publication number
- GB402730A GB402730A GB632632A GB632632A GB402730A GB 402730 A GB402730 A GB 402730A GB 632632 A GB632632 A GB 632632A GB 632632 A GB632632 A GB 632632A GB 402730 A GB402730 A GB 402730A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- anhydride
- acetic
- acetic anhydride
- cotton
- 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
- C08B3/08—Preparation of cellulose esters of organic acids of monobasic organic acids with three or more carbon atoms, e.g. propionate or butyrate
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 esterified with a reaction mixture containing butyric acid a propionic acid, and/or lower fatty acid anhydride. For example, when propionic acid is used, one of the following anhydrides could be employed, viz., acetic anhydride, chloracetic anhydride, methoxy-or ethoxy-acetic anhydride, and when butyric acid is used, propionic anhydride, chlorpropionic anhydride, alkoxy-propionic anhydride, acetic anhydride or its derivatives may be present. The esterification-impelling anhydride may or may not itself also contribute acyl groups to the product. In this way mixed esters, e.g., cellulose propionate-butyrate, cellulose acetate-propionate, cellulose acetate-butyrate, and cellulose acetate-propionate-butyrate may be obtained. The following Examples are given:--(1) Cotton is esterified in a bath comprising propionic acid, acetic acid, acetic anhydride, and zinc chloride, to produce a mixed acetate-propionate. (2) Cotton is treated with a mixture comprising butyric acid, acetic anhydride, acetic acid, and magnesium perchlorate trihydrate. (3) Cotton is esterified in a mixture comprising propionic acid, acetic acid, acetic anhydride, and sulphuric acid. (4) Cotton is esterified in a bath comprising propionic acid, acetic anhydride, ethylene dichloride, and sulphuric acid. (5) Cotton fibres are acylated so as to retain their fibrous structure by pretreating with propionic acid and perchloric acid, and reacting with a mixture of carbon tetrachloride and acetic anhydride. The products may be utilized in the production of filaments, films, lacquers, and the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB632632A GB402730A (en) | 1932-03-02 | 1932-03-02 | Manufacture of cellulose esters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB632632A GB402730A (en) | 1932-03-02 | 1932-03-02 | Manufacture of cellulose esters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB402730A true GB402730A (en) | 1933-12-07 |
Family
ID=9812448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB632632A Expired GB402730A (en) | 1932-03-02 | 1932-03-02 | Manufacture of cellulose esters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB402730A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4024334A (en) * | 1974-02-21 | 1977-05-17 | Commonwealth Scientific And Industrial Research Organization | Adsorbent materials |
-
1932
- 1932-03-02 GB GB632632A patent/GB402730A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4024334A (en) * | 1974-02-21 | 1977-05-17 | Commonwealth Scientific And Industrial Research Organization | Adsorbent materials |
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