GB573591A - Improvements in or relating to the production of alginic acid compounds - Google Patents
Improvements in or relating to the production of alginic acid compoundsInfo
- Publication number
- GB573591A GB573591A GB911842A GB911842A GB573591A GB 573591 A GB573591 A GB 573591A GB 911842 A GB911842 A GB 911842A GB 911842 A GB911842 A GB 911842A GB 573591 A GB573591 A GB 573591A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alginic acid
- acid
- benzene
- soaked
- water
- 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
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
- D01F9/04—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of alginates
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
Alginic acid derivatives are produced by first swelling in an aqueous medium, then displacing the water by an organic liquid while maintaining the swollen state, and finally treating with the necessary reagents for preparing the derivative. The alginic acid may be in powder, film or fibrous form. In examples: (1) alginic acid yarn is soaked in water, then treated with successive charges of glacial acetic acid and finally acetylated with acetic anhydride, benzene and sulphuric acid, the benzene being a non-solvent; the product may be purified with benzene and ether; (2) alginic acid powder is treated similarly; (3) the displacing of the water is effected with methyl alcohol; (4) and (5) alginic acid yarn is soaked in normal sulphuric and perchloric acid respectively, dehydrated with acetic acid and acetylated with acetic anhydride and benzene; (9) alginic acid yarn is soaked in normal perchloric acid, dehydrated with acetic acid, and esterified with propionic anhydride and benzene. The production of butyrate and acetobutyrate esters is mentioned. Specification 19330/05, [Class 2], is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB911842A GB573591A (en) | 1942-07-01 | 1942-07-01 | Improvements in or relating to the production of alginic acid compounds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB911842A GB573591A (en) | 1942-07-01 | 1942-07-01 | Improvements in or relating to the production of alginic acid compounds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB573591A true GB573591A (en) | 1945-11-28 |
Family
ID=9865710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB911842A Expired GB573591A (en) | 1942-07-01 | 1942-07-01 | Improvements in or relating to the production of alginic acid compounds |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB573591A (en) |
-
1942
- 1942-07-01 GB GB911842A patent/GB573591A/en not_active Expired
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