GB1102771A - Preparation of stereoregular polyvinyl alcohol fibres or filaments - Google Patents
Preparation of stereoregular polyvinyl alcohol fibres or filamentsInfo
- Publication number
- GB1102771A GB1102771A GB14981/65A GB1498165A GB1102771A GB 1102771 A GB1102771 A GB 1102771A GB 14981/65 A GB14981/65 A GB 14981/65A GB 1498165 A GB1498165 A GB 1498165A GB 1102771 A GB1102771 A GB 1102771A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filaments
- stretched
- polyvinyl alcohol
- spinning
- stereoregular
- 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/14—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of unsaturated alcohols, e.g. polyvinyl alcohol, or of their acetals or ketals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/12—Hydrolysis
Abstract
1,102,771. Producing stereoregular polyvinyl alcohol fibres. MONSANTO CO. 8 April, 1965 [8 April, 1964], No. 14981/65. Heading B5B. Stereoregular polyvinyl alcohol filaments which are insoluble in boiling water are produced by wet or dry spinning a solution of a stereoregular polyvinyl ester of a halogenated acetic acid, in which all three hydrogen atoms of the methyl group in the acetic acid have been substituted by either chlorine or fluorine or by both fluorine and chlorine, and continuously hydrolysing the resulting filaments. The filaments are preferably formed by wet spinning, and the thus formed filaments, stretched, hydrolysed continuously, dried and hot drawn. The spinning solution may contain 12 to 40% by weight of the polyester dissolved in an organic oxygen-containing liquid and may be extruded into a coagulation liquid which is a non-solvent for the polymer but miscible with the spinning solution solvent. The filaments may be stretched immediately after hydrolysis. The organic oxygen containing liquid may be acetone, methyl ethyl ketone, tetrahydrofuran or dimethylacetamide. The coagulating bath may be aqueous. The filaments may be hydrolysed with a base having a pKb value less than 8À0, such as ammonium hydroxide, methanolic ammonia, tetramethyl ammonium hydroxide or a primary or secondary amine. The freshly extruded polyester filaments may be stretched at a draw ratio of 1À05 to 8À0 : 1À0 in a hot aqueous bath, and may be further stretched immediately after hydrolysis. They may then be dried by passing them over a roller maintained at a temperature of from 80 to 110 C. and finally drawn over a heated surface while stretching them at a stretch ratio of from 1À1 to 5À0 : 1À0. The ester spun may be vinyltrifluoro or chlorodofluoroacetate.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US358243A US3329754A (en) | 1964-04-08 | 1964-04-08 | Preparation of stereoregular polyvinyl alcohol shaped articles |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1102771A true GB1102771A (en) | 1968-02-07 |
Family
ID=23408875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14981/65A Expired GB1102771A (en) | 1964-04-08 | 1965-04-08 | Preparation of stereoregular polyvinyl alcohol fibres or filaments |
Country Status (5)
Country | Link |
---|---|
US (1) | US3329754A (en) |
BE (1) | BE662253A (en) |
DE (1) | DE1494687A1 (en) |
FR (1) | FR1432051A (en) |
GB (1) | GB1102771A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1582532A1 (en) * | 2004-03-25 | 2005-10-05 | Xerox Corporation | Process for hydrolyzing poly(vinylbenzyl acetate) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3388199A (en) * | 1965-03-15 | 1968-06-11 | Monsanto Co | Preparation of acrylonitrile-vinyl alcohol copolymers |
DE1660224A1 (en) * | 1966-08-09 | 1971-03-11 | Barmag Barmer Maschf | Method and device for the heat treatment of synthetic threads and thread-like structures |
US4809493A (en) * | 1985-11-01 | 1989-03-07 | Kuraray Company Limited | Water-absorbing shrinkable yarn |
EP0389833B1 (en) * | 1989-03-07 | 1994-01-05 | Kuraray Co., Ltd. | Vinyl alcohol polymers and a process for their production |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB482216A (en) * | 1936-09-30 | 1938-03-25 | William Alexander Dickie | Improvements in the manufacture of artificial filaments, films and similar materials |
GB824550A (en) * | 1957-06-18 | 1959-12-02 | Rhone Poulenc Sa | Process for the production of polyvinyl alcohol yarns and films |
-
1964
- 1964-04-08 US US358243A patent/US3329754A/en not_active Expired - Lifetime
-
1965
- 1965-04-08 DE DE19651494687 patent/DE1494687A1/en active Pending
- 1965-04-08 FR FR12480A patent/FR1432051A/en not_active Expired
- 1965-04-08 BE BE662253D patent/BE662253A/xx unknown
- 1965-04-08 GB GB14981/65A patent/GB1102771A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1582532A1 (en) * | 2004-03-25 | 2005-10-05 | Xerox Corporation | Process for hydrolyzing poly(vinylbenzyl acetate) |
US7851551B2 (en) | 2004-03-25 | 2010-12-14 | Xerox Corporation | Polymer processes |
Also Published As
Publication number | Publication date |
---|---|
US3329754A (en) | 1967-07-04 |
FR1432051A (en) | 1966-03-18 |
DE1494687A1 (en) | 1970-12-10 |
BE662253A (en) | 1965-10-08 |
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