ES422604A1 - Procedure for producing composite acrylic fibers. (Machine-translation by Google Translate, not legally binding) - Google Patents

Procedure for producing composite acrylic fibers. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES422604A1
ES422604A1 ES422604A ES422604A ES422604A1 ES 422604 A1 ES422604 A1 ES 422604A1 ES 422604 A ES422604 A ES 422604A ES 422604 A ES422604 A ES 422604A ES 422604 A1 ES422604 A1 ES 422604A1
Authority
ES
Spain
Prior art keywords
fiber
acrylonitrile
gelled
wet
component
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
ES422604A
Other languages
Spanish (es)
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.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid 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 American Cyanamid Co filed Critical American Cyanamid Co
Publication of ES422604A1 publication Critical patent/ES422604A1/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

Landscapes

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

Abstract

Process for producing composite acrylic fibers having improved frill-forming and dimensional stability characteristics, similar to wool, wherein the polymeric component with the highest content of acrylonitrile forms the internal component of the helical curl, by wet spinning of two polymeric components of acrylonitrile to form a wet, swollen, composite, gelled, stretched fiber of the gelled, wet, dried gelled fiber dried fiber and thermal relaxation of the dried fiber; characterized in that it comprises selecting, as the polymer components, two acrylonitrile polymers containing at least 88 by weight of acrylonitrile, but differing from each other by at least 0.5% by weight in acrylonitrile content, having the component of higher content in acrylonitrile an index of irreversible swelling that is at least 0.05 higher than the index of the other component and that forms the internal component of the helical curl; thermally relaxing, primarily, the wet, swollen gelled fiber, containing at least 40% by weight of water, in steam or hot water, at 60-130º c, immediately after drawing; re-stretching the dry fiber, with a stretch ratio of 1 to 1.4; mechanically curl the re-stretched fiber; and thermally re-relaxing the re-stretched fiber in water vapor at 100-140º c. (Machine-translation by Google Translate, not legally binding)
ES422604A 1973-01-25 1974-01-25 Procedure for producing composite acrylic fibers. (Machine-translation by Google Translate, not legally binding) Expired ES422604A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1085173A JPS5112086B2 (en) 1973-01-25 1973-01-25

Publications (1)

Publication Number Publication Date
ES422604A1 true ES422604A1 (en) 1976-09-01

Family

ID=11761844

Family Applications (1)

Application Number Title Priority Date Filing Date
ES422604A Expired ES422604A1 (en) 1973-01-25 1974-01-25 Procedure for producing composite acrylic fibers. (Machine-translation by Google Translate, not legally binding)

Country Status (4)

Country Link
JP (1) JPS5112086B2 (en)
CA (1) CA1045321A (en)
DE (1) DE2403420A1 (en)
ES (1) ES422604A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3001046C2 (en) * 1980-01-12 1983-09-22 Bayer Ag, 5090 Leverkusen Bicomponent fibers and threads with permanent three-dimensional crimp
JP5909294B1 (en) * 2015-03-11 2016-04-26 力晶科技股▲ふん▼有限公司 WRITE CIRCUIT AND METHOD FOR NONVOLATILE MEMORY DEVICE, AND NONVOLATILE MEMORY DEVICE

Also Published As

Publication number Publication date
JPS5112086B2 (en) 1976-04-16
JPS4994923A (en) 1974-09-09
CA1045321A (en) 1979-01-02
DE2403420A1 (en) 1974-08-08

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