GB1087964A - Process for the preparation of cross-linked dexaran in the form of beads - Google Patents
Process for the preparation of cross-linked dexaran in the form of beadsInfo
- Publication number
- GB1087964A GB1087964A GB1671766A GB1671766A GB1087964A GB 1087964 A GB1087964 A GB 1087964A GB 1671766 A GB1671766 A GB 1671766A GB 1671766 A GB1671766 A GB 1671766A GB 1087964 A GB1087964 A GB 1087964A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cross
- linked
- dextran
- fatty acids
- epichlorhydrin
- 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
Cross-linked dextron in bead form is produced by dispersing into epichlorhydrin, in the presence of C10-C18 fatty acids as suspension stabilizers an aqueous alkali metal hydroxide solution of dextran containing 20-50% by weight of dextran, allowing the dextran and epichlorohydrin to cross-link, freeing the cross-linked product from excess epichlorhydrin, and swelling and washing it in hot water. Reaction is suitably effected at 50 DEG C. or below, and the initial dispersion may be stirred to prevent coagulation. The degree of cross-linking depends on the amount of alkali initially present, and values from 2.8 up to 8.5 are given in the examples. Suitably 0.1-2.0% of fatty acids are present.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1671766A GB1087964A (en) | 1966-04-15 | 1966-04-15 | Process for the preparation of cross-linked dexaran in the form of beads |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1671766A GB1087964A (en) | 1966-04-15 | 1966-04-15 | Process for the preparation of cross-linked dexaran in the form of beads |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1087964A true GB1087964A (en) | 1967-10-18 |
Family
ID=10082386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1671766A Expired GB1087964A (en) | 1966-04-15 | 1966-04-15 | Process for the preparation of cross-linked dexaran in the form of beads |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1087964A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4794177A (en) * | 1984-12-29 | 1988-12-27 | Ceskoslovenska Akademie Ved | Method for the production of bead dextran materials for gel chromatography |
-
1966
- 1966-04-15 GB GB1671766A patent/GB1087964A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4794177A (en) * | 1984-12-29 | 1988-12-27 | Ceskoslovenska Akademie Ved | Method for the production of bead dextran materials for gel chromatography |
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