GB517820A - A method of producing soluble benzyl ether of dextran - Google Patents
A method of producing soluble benzyl ether of dextranInfo
- Publication number
- GB517820A GB517820A GB23112/38A GB2311238A GB517820A GB 517820 A GB517820 A GB 517820A GB 23112/38 A GB23112/38 A GB 23112/38A GB 2311238 A GB2311238 A GB 2311238A GB 517820 A GB517820 A GB 517820A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dextran
- benzyl
- water
- ethers
- 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
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0009—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid alpha-D-Glucans, e.g. polydextrose, alternan, glycogen; (alpha-1,4)(alpha-1,6)-D-Glucans; (alpha-1,3)(alpha-1,4)-D-Glucans, e.g. isolichenan or nigeran; (alpha-1,4)-D-Glucans; (alpha-1,3)-D-Glucans, e.g. pseudonigeran; Derivatives thereof
- C08B37/0021—Dextran, i.e. (alpha-1,4)-D-glucan; Derivatives thereof, e.g. Sephadex, i.e. crosslinked dextran
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
517,820. Dextran benzyl ethers. STAHLY, G. L., and CARLSON, W. W. Aug. 4, 1938, No. 23112.Convention date, Feb. 26. [Class 2 (iii)] Benzyl ethers of dextran which are soluble in acetoneand similar organic solvents are obtained by reacting dextran with a mixture of a benzyl halide, an alkali hydroxide and water and continuing the reaction until the product has attained the required solubility. The reaction is preferably conducted at an .elevated temperature such as 100‹-105‹C. and under a mixed pressure. The addition of benzyl halide, alkali and water is preferably made in two separate batches. The ethers so obtained, preferably after being dehydrated and purified, are employed dissolved in a solvent as lacquers and coating compositions; The' expression similar solvents to acetone includes dioxane, ethyl acetate, butyl acetate diacetone, mesityl oxide and chloroform. A coating of the benzyl ethers of dextran may be applied by, brushing or roller coating, but preferably by spraying, and is stated to be substantially non-inflammable, and to possess sufficient flexibility not to require the addition of plasticisers. Numerous examples are given employing varying amounts of dextran, benzyl halides, alkali, and water under varying conditions of temperature and pressure. The products are purified by steam distillation, followed by maceration in water and drying.Specifications 517,397 and 517,398 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US517820XA | 1938-02-26 | 1938-02-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB517820A true GB517820A (en) | 1940-02-09 |
Family
ID=21973341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23112/38A Expired GB517820A (en) | 1938-02-26 | 1938-08-04 | A method of producing soluble benzyl ether of dextran |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB517820A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2490070A (en) * | 1946-02-08 | 1949-12-06 | New Wrinkle Inc | Wrinkle drying composition containing dextran benzyl ether |
| US2864707A (en) * | 1956-01-16 | 1958-12-16 | Union Carbide Corp | Beverage concentrates and syrups |
| US2982394A (en) * | 1955-07-13 | 1961-05-02 | Ohio Commw Eng Co | Soil conditioning package |
-
1938
- 1938-08-04 GB GB23112/38A patent/GB517820A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2490070A (en) * | 1946-02-08 | 1949-12-06 | New Wrinkle Inc | Wrinkle drying composition containing dextran benzyl ether |
| US2982394A (en) * | 1955-07-13 | 1961-05-02 | Ohio Commw Eng Co | Soil conditioning package |
| US2864707A (en) * | 1956-01-16 | 1958-12-16 | Union Carbide Corp | Beverage concentrates and syrups |
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