GB812510A - Process for preparing cellulose ethers and the product obtained thereby - Google Patents
Process for preparing cellulose ethers and the product obtained therebyInfo
- Publication number
- GB812510A GB812510A GB11251/57A GB1125157A GB812510A GB 812510 A GB812510 A GB 812510A GB 11251/57 A GB11251/57 A GB 11251/57A GB 1125157 A GB1125157 A GB 1125157A GB 812510 A GB812510 A GB 812510A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cellulose
- alkylene oxide
- alkyl halide
- alkyl
- carbon atoms
- 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
- C08B11/00—Preparation of cellulose ethers
- C08B11/193—Mixed ethers, i.e. ethers with two or more different etherifying groups
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 alkyl hydroxyalkyl ethers are prepared by causing cellulose to absorb from 1.2-2.8 mols. of aqueous alkali metal hydroxide per anhydroglucose unit at 15-30 DEG C. and treating the resulting alkali cellulose at 20-140 DEG C. with an amount of alkyl halide (having 1 or 2 carbon atoms) approximately equivalent to the alkali metal hydroxide absorbed by the cellulose, and with an alkylene oxide (having 2-4 carbon atoms) until substantially all of the alkyl halide and from 0.1-0.5 part by weight of alkylene oxide per part of cellulose has reacted. Preferably the alkyl halide and alkylene oxide are brought into contact with the alkali cellulose simultaneously. Methyl and ethyl chlorides are the preferred alkyl halides. The products are water-soluble and their solutions show reduced viscosity hysteresis effects. Examples are given.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US812510XA | 1956-04-30 | 1956-04-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB812510A true GB812510A (en) | 1959-04-29 |
Family
ID=22163025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11251/57A Expired GB812510A (en) | 1956-04-30 | 1957-04-05 | Process for preparing cellulose ethers and the product obtained thereby |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB812510A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4609729A (en) * | 1985-04-03 | 1986-09-02 | The Dow Chemical Company | Organosoluble C3 -C4 hydroxyalkyl ethyl cellulose ethers |
-
1957
- 1957-04-05 GB GB11251/57A patent/GB812510A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4609729A (en) * | 1985-04-03 | 1986-09-02 | The Dow Chemical Company | Organosoluble C3 -C4 hydroxyalkyl ethyl cellulose ethers |
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