GB907673A - Production of yarns of polymers based on acrylonitrile - Google Patents

Production of yarns of polymers based on acrylonitrile

Info

Publication number
GB907673A
GB907673A GB37013/60A GB3701360A GB907673A GB 907673 A GB907673 A GB 907673A GB 37013/60 A GB37013/60 A GB 37013/60A GB 3701360 A GB3701360 A GB 3701360A GB 907673 A GB907673 A GB 907673A
Authority
GB
United Kingdom
Prior art keywords
vapour
polyacrylonitrile
drawn
filaments
mixtures
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
Application number
GB37013/60A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Crylor SA
Original Assignee
Crylor SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Crylor SA filed Critical Crylor SA
Publication of GB907673A publication Critical patent/GB907673A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D02J1/222—Stretching in a gaseous atmosphere or in a fluid bed
    • 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
    • D01F6/18—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 nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
    • 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
    • D01F6/28—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/38—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds comprising unsaturated nitriles as the major constituent

Abstract

Filamentary yarns and tows of polyacrylonitrile, free from contained solvent, are drawn in a medium comprising the vapour of n-amyl alcohol, isoamyl alcohol, or mixtures thereof, n-amyl acetate, isoamyl acetate, or mixtures thereof, or of cyclohexanone. The term "polyacrylonitrile" includes polymers, copolymers, grafted polymers and mixtures thereof containing 85-100% polyacrylonitrile and up to 15% of one or more copolymerizable ethylenic compounds. The vapour may be maintained at a temperature close to the boiling point of the liquid of which it is the vapour, usually slightly below the boiling point, so that drawing may be effected in the vapour of the boiling liquid. In Examples (1), (3), a polyacrylonitrile untwisted yarn is drawn up to 16,5x in cyclohexanone vapour at 153 DEG C., (2) a yarn of filaments of 85% polyacrylonitrile and 15% polyvinyl acetate twisted 50 turns per metre is drawn 11,4x in amyl alcohol vapour at 131 DEG C., (4) a tow of filaments of a copolymer of 92% acrylonitrile and 8% methyl methacrylate is drawn in saturated isoamyl acetate vapour at 145 DEG C. The process of the invention enables filaments to be drawn to a higher draw ratio than is possible by conventional methods, and for a given draw ratio the process yields filaments of higher tenacity.
GB37013/60A 1959-11-03 1960-10-27 Production of yarns of polymers based on acrylonitrile Expired GB907673A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR809190A FR1248484A (en) 1959-11-03 1959-11-03 Improvement in the manufacture of acrylonitrile-based polymer yarns

Publications (1)

Publication Number Publication Date
GB907673A true GB907673A (en) 1962-10-10

Family

ID=8720846

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37013/60A Expired GB907673A (en) 1959-11-03 1960-10-27 Production of yarns of polymers based on acrylonitrile

Country Status (7)

Country Link
US (1) US3150223A (en)
CH (1) CH389154A (en)
DE (1) DE1209241B (en)
ES (1) ES262136A1 (en)
FR (1) FR1248484A (en)
GB (1) GB907673A (en)
NL (2) NL125916C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3426117A (en) * 1966-12-14 1969-02-04 Japan Exlan Co Ltd Method for treating acrylic composite fiber
US4013753A (en) * 1973-10-09 1977-03-22 Bayer Aktiengesellschaft Process for the production of spontaneously crimping polyacrylonitrile composite fibres with improved crimp properties
US11555964B1 (en) 2021-06-30 2023-01-17 Globalfoundries U.S. Inc. Optical device with low-loss thermally tunable closed-curve optical waveguide

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2499477A (en) * 1945-06-07 1950-03-07 Union Carbide & Carbon Corp Vinyl resin textile article
US2476069A (en) * 1947-02-08 1949-07-12 Wingfoot Corp Delustering copolymer filaments
US2768057A (en) * 1950-02-08 1956-10-23 Phrix Werke Ag Drawing of organic high polymers

Also Published As

Publication number Publication date
NL247497A (en)
CH389154A (en) 1965-03-15
ES262136A1 (en) 1960-12-16
NL125916C (en)
US3150223A (en) 1964-09-22
DE1209241B (en) 1966-01-20
FR1248484A (en) 1960-12-16

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