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GB748522A - Improvements in wet spinning of acrylonitrile polymers - Google Patents

Improvements in wet spinning of acrylonitrile polymers

Info

Publication number
GB748522A
GB748522A GB28767/53A GB2876753A GB748522A GB 748522 A GB748522 A GB 748522A GB 28767/53 A GB28767/53 A GB 28767/53A GB 2876753 A GB2876753 A GB 2876753A GB 748522 A GB748522 A GB 748522A
Authority
GB
United Kingdom
Prior art keywords
ethylene carbonate
fibres
stretching
per cent
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
Application number
GB28767/53A
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.)
Industrial Rayon Corp
Original Assignee
Industrial Rayon Corp
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 Industrial Rayon Corp filed Critical Industrial Rayon Corp
Publication of GB748522A publication Critical patent/GB748522A/en
Expired legal-status Critical Current

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
    • D01F6/18—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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Artificial Filaments (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

In the wet-spinning of polyacrylonitrile fibres, a solution of polyacrylonitrile, or a copolymer thereof containing at least 80 per cent by weight of acrylonitrile, in aqueous ethylene carbonate, containing 2.5-18.5 per cent by weight of the solution of water, is extruded into an aqueous ethylene carbonate coagulating bath at 40-90 DEG C. containing 20-38 per cent by weight of ethylene carbonate, and the formed fibres are first stretched at a temperature below 65 DEG C., at least a portion of their travel under stretching tension being in air and while the fibres contain 75-200 per cent of ethylene carbonate, and then further stretched at a temperature above 90 DEG C., their ethylene carbonate content during at least a portion of their travel under the second stretching tension being less than that of the fibres undergoing the first stretching operation. The first stretching may be effected entirely in air or partly in air and partly in an aqueous liquid. The second stretching may be effected in a hot aqueous liquid, the aqueous liquid washing out at least some of the ethylene carbonate, or it may be effected in steam or on a heated roll or other surface, in which latter cases the fibres are first washed to reduce the ethylene carbonate content. The coagulating bath may contain small amounts of glycols, e.g. ethylene and dipropylene glycols. The fibres may be finally washed, heat-treated and dried. Copolymers of acrylonitrile with minor amounts of one or more vinyl compounds, many of which are specified, may be employed. Specification 716,081 is referred to.
GB28767/53A 1952-11-07 1953-10-19 Improvements in wet spinning of acrylonitrile polymers Expired GB748522A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US317068XA 1952-11-07 1952-11-07

Publications (1)

Publication Number Publication Date
GB748522A true GB748522A (en) 1956-05-02

Family

ID=21860966

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28767/53A Expired GB748522A (en) 1952-11-07 1953-10-19 Improvements in wet spinning of acrylonitrile polymers

Country Status (5)

Country Link
BE (1) BE524025A (en)
CH (1) CH317068A (en)
DE (1) DE1049044B (en)
FR (1) FR1090816A (en)
GB (1) GB748522A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1237260B (en) * 1957-06-05 1967-03-23 Dow Chemical Co Process for the continuous production of permanently crimped polyacrylonitrile threads or fibers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2428090A1 (en) * 1978-06-05 1980-01-04 Rhone Poulenc Textile Acrylic! fibres with high boiling water shrinkage - produced by wet spinning followed by a multistage drawing process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1237260B (en) * 1957-06-05 1967-03-23 Dow Chemical Co Process for the continuous production of permanently crimped polyacrylonitrile threads or fibers

Also Published As

Publication number Publication date
CH317068A (en) 1956-11-15
FR1090816A (en) 1955-04-04
DE1049044B (en) 1959-01-22
BE524025A (en) 1956-03-02

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