GB559818A - Improvements in or relating to the hardening or insolubilisation of artificial filaments obtained from protein solutions - Google Patents
Improvements in or relating to the hardening or insolubilisation of artificial filaments obtained from protein solutionsInfo
- Publication number
- GB559818A GB559818A GB1237742A GB1237742A GB559818A GB 559818 A GB559818 A GB 559818A GB 1237742 A GB1237742 A GB 1237742A GB 1237742 A GB1237742 A GB 1237742A GB 559818 A GB559818 A GB 559818A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solution
- filaments
- fibres
- protein
- amide
- 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
- D01F4/00—Monocomponent artificial filaments or the like of proteins; Manufacture thereof
Abstract
559,818. Artificial filaments. McLEAN, A., SWIFT, S. R., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Sept. 2, 1942, No. 12377. [Class 2 (ii)] A solution of a protein, e.g. casein or a vegetable globulin, is extruded into a coagulating medium, and the filaments so produced are washed in a solution containing an anti-swelling agent for the protein, then treated with a solution containing an anti-swelling agent together with urea, thiourea, biuret, or like bifunctional amide, and thereafter are treated under acid conditions, and while they are still impregnated with the amide solution, with a hardening aldehyde capable of reacting with the amide in the presence of acid to produce an insoluble condensation product. The antiswelling agent may be a concentrated salt solution, or a strong solution of alcohol, glycerol, or other organic dehydrating agent. Preferably a saturated sodium chloride solution is used. Sodium sulphate or other inorganic salt solutions, e.g. alkaline earth, metal halide solutions may be used. The aldehyde may be formaldehyde, a formaldehyde polymer, or acrolein. In an example, staple fibres are obtained by a continuous process from a solution of ground nut protein by extruding the alkaline solution into an aqueous sodium sulphate solution acidified with sulphuric acid, stretching the filaments as they are produced, subjecting the advancing coagulated filaments, while their length is maintained, to washing in concentrated sodium chloride solution, and then cutting the filaments into staple fibres. The fibres are placed in a solution containing urea and salt and allowed to steep for several hours. The fibres are removed and most of the adhering liquor is drained off. They are then immersed in a warm solution of sodium chloride, formaldehyde and hydrochloric acid, for several hours. The fibres are then removed, washed, and dried. Specification 543,586 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1237742A GB559818A (en) | 1942-09-02 | 1942-09-02 | Improvements in or relating to the hardening or insolubilisation of artificial filaments obtained from protein solutions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1237742A GB559818A (en) | 1942-09-02 | 1942-09-02 | Improvements in or relating to the hardening or insolubilisation of artificial filaments obtained from protein solutions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB559818A true GB559818A (en) | 1944-03-07 |
Family
ID=10003417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1237742A Expired GB559818A (en) | 1942-09-02 | 1942-09-02 | Improvements in or relating to the hardening or insolubilisation of artificial filaments obtained from protein solutions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB559818A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2519978A (en) * | 1945-10-11 | 1950-08-22 | Jack J Press | Generated proteins and process for preparation thereof |
-
1942
- 1942-09-02 GB GB1237742A patent/GB559818A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2519978A (en) * | 1945-10-11 | 1950-08-22 | Jack J Press | Generated proteins and process for preparation thereof |
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