GB994019A - Fibres of acrylonitrile polymers - Google Patents

Fibres of acrylonitrile polymers

Info

Publication number
GB994019A
GB994019A GB1544064A GB1544064A GB994019A GB 994019 A GB994019 A GB 994019A GB 1544064 A GB1544064 A GB 1544064A GB 1544064 A GB1544064 A GB 1544064A GB 994019 A GB994019 A GB 994019A
Authority
GB
United Kingdom
Prior art keywords
fibres
shrinkability
filaments
staple
acrylonitrile
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
GB1544064A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB994019A publication Critical patent/GB994019A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/18—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by combining fibres, filaments, or yarns, having different shrinkage characteristics
    • 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

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

Abstract

Staple fibres and filaments of high density and high shrinkability are made by stretching filaments of an acrylonitrile polymer (a homopolymer or a copolymer containing not less than 70% by weight of units derived from acrylonitrile) by a factor of 1.5 to 2.5, at 135 DEG C. to 145 DEG C. for 0.25 to 2 seconds, the filaments before stretching having a length at most 1.5 times their as-spun length and containing at most 10% by weight of water and at most 3% of spinning solvent. A bulky yarn is made by subjecting a yarn comprising a mixture of staple fibres formed as above, and staple fibres of substantially lower shrinkability, to conditions which cause the acrylonitrile polymer fibres to shrink. In an example, a tow of high shrinkability acrylonitrile copolymer filaments produced as above is crimped at 21 DEG C. in a stuffer box, and then cut to staple simultaneously with 3 tows of lower shrinkability made of the same copolymer. The top contained 19% of the high shrinkability fibres, and was drafted with further staple fibres of the same copolymer to give a blend containing 10% high shrinkability fibres. This was processed into worsted yarn, steam relaxed at 135 DEG C. in saturated steam, and stretched 30% cuasing breakage or displacement of the fibres. Specification 586,926 is referred to.
GB1544064A 1963-04-18 1964-04-14 Fibres of acrylonitrile polymers Expired GB994019A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US27401063A 1963-04-18 1963-04-18

Publications (1)

Publication Number Publication Date
GB994019A true GB994019A (en) 1965-06-02

Family

ID=23046388

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1544064A Expired GB994019A (en) 1963-04-18 1964-04-14 Fibres of acrylonitrile polymers

Country Status (3)

Country Link
BE (1) BE646189A (en)
GB (1) GB994019A (en)
NL (1) NL6404087A (en)

Also Published As

Publication number Publication date
BE646189A (en) 1964-07-31
NL6404087A (en) 1964-10-19

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