GB917355A - Method of manufacturing synthetic fibres of polyvinyl alcohol - Google Patents
Method of manufacturing synthetic fibres of polyvinyl alcoholInfo
- Publication number
- GB917355A GB917355A GB38975/60A GB3897560A GB917355A GB 917355 A GB917355 A GB 917355A GB 38975/60 A GB38975/60 A GB 38975/60A GB 3897560 A GB3897560 A GB 3897560A GB 917355 A GB917355 A GB 917355A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hot
- wet
- polyvinyl alcohol
- boric acid
- 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
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
- Y10S264/19—Inorganic fiber
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
- Y10S8/10—Polyvinyl halide esters or alcohol fiber modification
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
An aqueous polyvinyl alcohol solution containing boric acid is wet- or dry-spun and the filaments so formed washed with water to remove boric acid, dried, and then hot-stretched. Hot-stretching may be followed by further treatments, e.g. heat-treatment or chemical treatment, e.g. acetalization. In a preferred method, the solution is wet-spun into an aqueous coagulating bath containing an inorganic salt, stretched in a wet state at room temperature, and/or in a hot aqueous solution of an inorganic salt, washed with water to remove boric acid, dried, and further hot-stretched. Polyvinyl alcohol having an average degree of polymerization of 1,000-2,500 may be used in aqueous solutions of 11-25% by weight concentration containing 0,4-1,5% by weight, based on the polyvinyl alcohol, of boric acid, and wet-spun into coagulating baths containing 480-530 g./l. ammonium sulphate, 0-10 g./l. ammonium hydroxide, and 0-15 g./l. boric acid at 20 DEG -45 DEG C. An alternative coagulating bath contains 380 g./l. anhydrous sodium sulphate and 3 g./l. sodium hydroxide, and is used at 30 DEG C. In a dryspinning method, polyvinyl alcohol having an average degree of polymerization of 1,700 is used in aqueous solution of 30% by weight concentration containing 0,4% by weight, based on the polyvinyl alcohol, of boric acid, dry spun in an air bath, and the filaments formed washed with water, dried, and hot-stretched. Filaments so formed are then subjected either to 100% wet stretch at room temperature followed by 150% hot wet stretch, or to 400% hot wet stretch. Hot wet stretching in either case is effected in a hot aqueous inorganic salt solution, e.g. 29-30%, or 49-50%, ammonium sulphate at 90 DEG -92 DEG C., and is followed by water-washing, drying, hot stretching and heat-treatment at constant length, e.g. in air, or in baths of polyethylene glycol, silicone oil, solder, or Wood's metal, at 230 DEG -240 DEG C. Filaments so made show enhanced strength and resistance to hot water.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP526960 | 1960-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB917355A true GB917355A (en) | 1963-02-06 |
Family
ID=11606494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB38975/60A Expired GB917355A (en) | 1960-02-23 | 1960-11-14 | Method of manufacturing synthetic fibres of polyvinyl alcohol |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3170973A (en) |
| DE (1) | DE1469096A1 (en) |
| FR (1) | FR1280192A (en) |
| GB (1) | GB917355A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0146084A2 (en) * | 1983-12-12 | 1985-06-26 | Toray Industries, Inc. | Ultra-high-tenacity polyvinyl alcohol fiber and process for producing same |
| EP2746434A4 (en) * | 2011-08-18 | 2015-04-01 | Anhui Wanwei Updated High Tech Material Industry Co Ltd | High-strength, high-modulus and high-melting point pva fiber and method for manufacturing same |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1036787A (en) * | 1962-08-09 | 1966-07-20 | Kurashiki Rayon Kk | Method of manufacturing synthetic fibres of acetalized polyvinyl alcohol |
| FR1407088A (en) * | 1964-03-25 | 1965-07-30 | Rhodiaceta | New process for drawing polymer yarns based on polyvinyl alcohol |
| US3852402A (en) * | 1969-11-25 | 1974-12-03 | S Tanaka | Process for the preparation of polyvinyl alcohol fibers |
| GB1314000A (en) * | 1970-06-27 | 1973-04-18 | Unitika Ltd | Polyvinyl alcohol synthetic fibres |
| JPS60162805A (en) * | 1984-01-31 | 1985-08-24 | Kuraray Co Ltd | High-tenacity polyvinyl alcohol based ultrafine fiber and production thereof |
-
1960
- 1960-11-14 GB GB38975/60A patent/GB917355A/en not_active Expired
- 1960-11-30 DE DE19601469096 patent/DE1469096A1/en active Pending
-
1961
- 1961-01-04 FR FR848781A patent/FR1280192A/en not_active Expired
- 1961-02-23 US US90955A patent/US3170973A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0146084A2 (en) * | 1983-12-12 | 1985-06-26 | Toray Industries, Inc. | Ultra-high-tenacity polyvinyl alcohol fiber and process for producing same |
| EP0146084A3 (en) * | 1983-12-12 | 1986-07-16 | Toray Industries, Inc. | Ultra-high-tenacity polyvinyl alcohol fiber and process for producing same |
| EP2746434A4 (en) * | 2011-08-18 | 2015-04-01 | Anhui Wanwei Updated High Tech Material Industry Co Ltd | High-strength, high-modulus and high-melting point pva fiber and method for manufacturing same |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1280192A (en) | 1961-12-29 |
| US3170973A (en) | 1965-02-23 |
| DE1469096A1 (en) | 1968-12-05 |
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