GB782456A - Improvements in and relating to the production of artificial filaments, threads, fibres, bands and the like - Google Patents
Improvements in and relating to the production of artificial filaments, threads, fibres, bands and the likeInfo
- Publication number
- GB782456A GB782456A GB937855A GB937855A GB782456A GB 782456 A GB782456 A GB 782456A GB 937855 A GB937855 A GB 937855A GB 937855 A GB937855 A GB 937855A GB 782456 A GB782456 A GB 782456A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amidation
- extrusion
- esterified
- products
- effected
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
Abstract
In the manufacture of artificial threads and like products by extruding a protein solution into a setting medium and hardening the products, the protein is esterified before or after extrusion and the esterified protein is treated with ammonia to convert at least a part of the esterified carboxyl groups into amide groups; the amidation may be effected before or after extrusion and in one form of the process, esterification is effected before extrusion and amidation after extrusion. Esterification may be effected with methanol in the presence of sulphuric acid or with dimethyl sulphate or ethylene oxide. Amidation may be effected with anhydrous or alcoholic ammonia or with aqueous ammonia solution preferably containing ammonium salts as buffers. When esterification and amidation follow extrusion, the extruded products are preferably first hardened in a formaldehyde-salt bath and may then be esterified as described in Specification 690,492. After amidation the products may be further hardened in a bath containing formaldehyde, sulphuric acid and one or more metal salts; alternatively or in addition, they may be insolubilized by treatment in a cyanate bath, as described in Specification 701,645. Examples are given.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB937855A GB782456A (en) | 1955-03-31 | 1955-03-31 | Improvements in and relating to the production of artificial filaments, threads, fibres, bands and the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB937855A GB782456A (en) | 1955-03-31 | 1955-03-31 | Improvements in and relating to the production of artificial filaments, threads, fibres, bands and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB782456A true GB782456A (en) | 1957-09-04 |
Family
ID=9870823
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB937855A Expired GB782456A (en) | 1955-03-31 | 1955-03-31 | Improvements in and relating to the production of artificial filaments, threads, fibres, bands and the like |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB782456A (en) |
-
1955
- 1955-03-31 GB GB937855A patent/GB782456A/en not_active Expired
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