GB408730A - Preparation of cellulose derivatives - Google Patents
Preparation of cellulose derivativesInfo
- Publication number
- GB408730A GB408730A GB3299132A GB3299132A GB408730A GB 408730 A GB408730 A GB 408730A GB 3299132 A GB3299132 A GB 3299132A GB 3299132 A GB3299132 A GB 3299132A GB 408730 A GB408730 A GB 408730A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ethylene oxide
- salts
- per cent
- solution
- treated
- 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
- C08B11/08—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals with hydroxylated hydrocarbon radicals; Esters, ethers, or acetals thereof
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
Ethylene oxide is caused to react with a cellulosic material in the presence of salts of alkali metals or of metals of the second group, or in the presence of salts of organic bases with inorganic acids. Examples of such salts are sodium, potassium, and zinc chlorides, magnesium perchlorate, barium sulphocyanide, potassium acetate, potassium carbonate, and benzyl pyridinium chloride. The ethylene oxide may be in the vapour or liquid state, and there may be present another liquid such as benzene, acetic acid, water, or glycol. The products of the reaction may be subjected to esterification and/or etherification. The following examples are given: (1) Sulphite cellulose is immersed in a 5 per cent sodium chloride solution, pressed and treated with gaseous ethylene oxide. The product may be benzylated. (2) Bleached rags are impregnated with 10 c.c. of a 50 per cent solution of zinc chloride, dried in a current of warm air, and treated with excess of liquid ethylene oxide. The product may be dissolved in caustic soda solution and coagulated in the form of sheets. (3) Low viscosity cotton cellulose is treated with a 5 per cent solution of magnesium perchlorate in anhydrous acetic acid, and ethylene oxide. The product is acetylated directly by adding acetic anhydride. (4) The zinc chloride of example 2 is replaced by 10 c.c. of 5--50 per cent solution of benzyl pyridinium chloride. (5) The salts of examples 1, 3, or 4 are replaced by potassium acetate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3299132A GB408730A (en) | 1932-11-22 | 1932-11-22 | Preparation of cellulose derivatives |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3299132A GB408730A (en) | 1932-11-22 | 1932-11-22 | Preparation of cellulose derivatives |
Publications (1)
Publication Number | Publication Date |
---|---|
GB408730A true GB408730A (en) | 1934-04-19 |
Family
ID=10347030
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3299132A Expired GB408730A (en) | 1932-11-22 | 1932-11-22 | Preparation of cellulose derivatives |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB408730A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4298728A (en) | 1980-06-03 | 1981-11-03 | Hercules Incorporated | Method of preparing hydroxyethyl ethers of cellulose |
-
1932
- 1932-11-22 GB GB3299132A patent/GB408730A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4298728A (en) | 1980-06-03 | 1981-11-03 | Hercules Incorporated | Method of preparing hydroxyethyl ethers of cellulose |
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