GB484386A - Manufacture of salts of cellulose ether carboxylic acids - Google Patents
Manufacture of salts of cellulose ether carboxylic acidsInfo
- Publication number
- GB484386A GB484386A GB30627/37A GB3062737A GB484386A GB 484386 A GB484386 A GB 484386A GB 30627/37 A GB30627/37 A GB 30627/37A GB 3062737 A GB3062737 A GB 3062737A GB 484386 A GB484386 A GB 484386A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cellulose
- salts
- sodium
- mol
- alkali
- 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
- C08B11/02—Alkyl or cycloalkyl ethers
- C08B11/04—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals
- C08B11/10—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals substituted with acid radicals
- C08B11/12—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals substituted with acid radicals substituted with carboxylic radicals, e.g. carboxymethylcellulose [CMC]
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
When preparing water-soluble or alkali-soluble salts of cellulose ether carboxylic acids, such as the sodium salt of cellulose glycollic acid, by the reaction of alkali cellulose with a halogen fatty acid, such as chloracetic acid, there is added to the reaction mixture a chemically indifferent salt which impedes the hydrolysis of the alkali cellulose. Suitable salts are sodium chloride, sodium bromide, sodium nitrate, and the sodium salts of various organic acids, but sodium chloride is preferred. Such a salt may be added to the extent of 20-80 per cent of the cellulose. If a water-soluble product is required there is used 1 to 1,5 mol. of halogen fatty acid to 1 mol. of cellulose; but if a product soluble only in alkali is required less than 1 mol. of halogen fatty acid per mol. of cellulose is used.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE484386X | 1936-11-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB484386A true GB484386A (en) | 1938-05-04 |
Family
ID=6543111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30627/37A Expired GB484386A (en) | 1936-11-21 | 1937-11-08 | Manufacture of salts of cellulose ether carboxylic acids |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB484386A (en) |
-
1937
- 1937-11-08 GB GB30627/37A patent/GB484386A/en not_active Expired
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