GB350906A - Process for the preparation of butyric cellulose esters - Google Patents
Process for the preparation of butyric cellulose estersInfo
- Publication number
- GB350906A GB350906A GB787030A GB787030A GB350906A GB 350906 A GB350906 A GB 350906A GB 787030 A GB787030 A GB 787030A GB 787030 A GB787030 A GB 787030A GB 350906 A GB350906 A GB 350906A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acetic acid
- pretreatment
- butyric
- preparation
- under vacuum
- 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
In the manufacture of simple or mixed butyric acid esters of cellulose the cellulosic material is thoroughly swollen and brought to a reactive condition by pretreatment with glacial acetic acid under vacuum, preferably at a low temperature, for example, 15-20 DEG C. The pretreatment may be conducted in presence of a diluent such as butyric acid or acetone. After the pretreatment excess of liquid is removed by centrifuging or by pressing and, if a simple butyrate not containing acetic acid residues is to be prepared, the remaining acetic acid is eliminated by lixiviation with the diluent employed. The used bath may be concentrated for re-use. In an example, linters, optionally bleached, are immersed in glacial acetic acid under vacuum for 1 1/4 hours at a temperature of 20 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB787030A GB350906A (en) | 1930-03-11 | 1930-03-11 | Process for the preparation of butyric cellulose esters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB787030A GB350906A (en) | 1930-03-11 | 1930-03-11 | Process for the preparation of butyric cellulose esters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB350906A true GB350906A (en) | 1931-06-11 |
Family
ID=9841353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB787030A Expired GB350906A (en) | 1930-03-11 | 1930-03-11 | Process for the preparation of butyric cellulose esters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB350906A (en) |
-
1930
- 1930-03-11 GB GB787030A patent/GB350906A/en not_active Expired
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