GB1265439A - - Google Patents

Info

Publication number
GB1265439A
GB1265439A GB1265439DA GB1265439A GB 1265439 A GB1265439 A GB 1265439A GB 1265439D A GB1265439D A GB 1265439DA GB 1265439 A GB1265439 A GB 1265439A
Authority
GB
United Kingdom
Prior art keywords
polyacrylonitrile
filaments
filament
methacrylonitrile
crimped
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
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 filed Critical
Publication of GB1265439A publication Critical patent/GB1265439A/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
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/08—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyacrylonitrile as constituent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/18—Homopolymers or copolymers of nitriles
    • C08L33/20—Homopolymers or copolymers of acrylonitrile

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)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Multicomponent Fibers (AREA)

Abstract

1,265,439. Crimped polyacrylonitrile composite filaments. MITSUBISHI RAYON CO. Ltd. 21 April, 1970, No. 19068/70. Heading B5B. [Also in Division D1] Acrylic crimped composite filaments of either the side-by-side, i.e. conjugate type, or the eccentric sheath-core type comprise two components, one being polyacrylonitrile, the other being an acrylonitrile-methacrylonitrile copolymer containing from 5 to 50% (preferably 7 to 30%) by weight of methacrylonitrile and the polyacrylonitrile component occupying the outer portion of each crimp. Either one or both components of the composite filaments may contain from 0À3 to 6% by weight of a monomer unit having a -SO 3 X or -OSO 3 X group, where X is a monovalent alkali metal, -NH 4 or hydrogen. Examples of such monomers are 2-vinyl pyridine, 2-methyl-5-vinyl pyridine, vinyl benzenesulphonic acid, and sodium methallyl sulphonate. 'The filaments may be produced by separately dissolving polyacrylonitrile and acrylonitrile-methacrylonitrile copolymer containing from 5-50% methacrylonitrile in a solvent suitable for dry-spinning, extruding the resulting spinning solutions simultaneously in side-by-side or eccentric sheath-core relationship into an evaporative medium to form composite filament, drawing said filament in a hot water bath, drying the drawn filament and then heating the dried filament in a relaxed state to develop crimps. The filaments may be mechanically crimped before being subjected to the relaxing step.
GB1265439D 1970-04-21 1970-04-21 Expired GB1265439A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB1906870 1970-04-21
DE19702019803 DE2019803A1 (en) 1970-04-21 1970-04-23 Acrylic composite fiber and process for making them
FR7018848A FR2087562A5 (en) 1970-04-21 1970-05-22

Publications (1)

Publication Number Publication Date
GB1265439A true GB1265439A (en) 1972-03-01

Family

ID=27182551

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1265439D Expired GB1265439A (en) 1970-04-21 1970-04-21

Country Status (3)

Country Link
DE (1) DE2019803A1 (en)
FR (1) FR2087562A5 (en)
GB (1) GB1265439A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4309475A (en) 1980-02-14 1982-01-05 E. I. Du Pont De Nemours And Company Bicomponent acrylic fiber

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT963572B (en) * 1972-07-31 1974-01-21 Snam Progetti PROCESS OF IRONING THREADS WITH BICOMPOSED ACRYLIC DYES AND THREAD OBTAINED BY THIS PROCEDURE
CN108728973B (en) * 2018-06-21 2021-11-26 福建恒捷实业有限公司 Production method of wool-like polyamide fiber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4309475A (en) 1980-02-14 1982-01-05 E. I. Du Pont De Nemours And Company Bicomponent acrylic fiber

Also Published As

Publication number Publication date
FR2087562A5 (en) 1971-12-31
DE2019803A1 (en) 1971-12-16

Similar Documents

Publication Publication Date Title
GB1265439A (en)
US3864447A (en) Method of producing acrylic composite fibers
US4124673A (en) Process for the production of bifilar acrylic fibres
US4067948A (en) Process for the production of high-shrinkage wet-spun acrylic fibres or filaments
US4418176A (en) Self-crimping acrylic fiber from a melt of two non-compatible polymers
US3624195A (en) Process for the preparation of acrylic manmade fiber
JPS5335017A (en) Production of viscose rayon fibers
GB1515887A (en) Highly shrinkable acrylic fibres or filaments
GB1290717A (en)
US3737504A (en) Process for the production of crimped acrylonitrile base yarns with an isopropanol containing bath
US3084993A (en) Production of crimped filaments
GB1027018A (en) Acrylic composite fibres and production thereof
GB1207654A (en) Reducing crimp intensity of crimped bicomponent acrylic fibres
IE40405B1 (en) Process for the production of spontaneously crimping polyacrylonitrile composite fibres with improved crimp probertiies
GB1309038A (en) Process for producing acrylic composite fibres having woolly crimp characteristics
US3769149A (en) Process for producing acrylic composite filaments and said composite filaments
GB1225015A (en) An improved process for manufacturing crimped polyacrylonitrile fibre
GB1029453A (en) Improved composite textile fibers
JPS5427020A (en) Production of extremely fine split textured yarn
JPS5482433A (en) Acrylic fiber with excellent heat resistance
GB1161606A (en) Bulky Acrylic Composite Fibre and method for the production thereof
ES366949A1 (en) Method for producing composite fibers of acrylonitrile type
JPS5459426A (en) Production of heat-resistant acrilonitrile fiber
GB1143983A (en) Composite filaments and manufacture thereof
GB1216786A (en) Conjugate spinning of acrylonitrile filaments

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees