GB879193A - Manufacture of polyvinyl alcohol fibres - Google Patents

Manufacture of polyvinyl alcohol fibres

Info

Publication number
GB879193A
GB879193A GB2339258A GB2339258A GB879193A GB 879193 A GB879193 A GB 879193A GB 2339258 A GB2339258 A GB 2339258A GB 2339258 A GB2339258 A GB 2339258A GB 879193 A GB879193 A GB 879193A
Authority
GB
United Kingdom
Prior art keywords
fibres
bath
hardening
sliver
formaldehyde
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
GB2339258A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst AG
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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB879193A publication Critical patent/GB879193A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C7/00—Alloys based on mercury
    • 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
    • D01F6/14—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 alcohols, e.g. polyvinyl alcohol, or of their acetals or ketals
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/12—Aldehydes; Ketones
    • D06M13/127—Mono-aldehydes, e.g. formaldehyde; Monoketones

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Artificial Filaments (AREA)

Abstract

Polyvinyl alcohol fibres having a low degree of shrinkage are made by impregnating heattreated polyvinyl alcohol fibres in the form of endless filament, sliver or staple fibres at room temperature or below with an acid, salt-containing formaldehyde bath, squeezing or centrifuging off excess hardening liquor and then heating the fibres in a pressure vessel or in a tube in a loose state to a temperature of 50 DEG -100 DEG C. until, after washing out the hardening bath, their shrinkage in boiling water amounts to no more than 10%. When a sliver is treated it may be impregnated with the hardening bath, squeezed out and then cut into staple fibres prior to heating. Heating may be carried out in a closed vessel for 10-120 minutes. When the process is carried out in a continuous manner the impregnated sliver may be conducted in a loose state through a tube through which a current of hot air containing steam and having a temperature of 90 DEG -100 DEG C. is passed. In a modification of the process the fibres are impregnated with an acid, salt-containing bath which does not contain formaldehyde, excess of the bath is squeezed or centrifuged off and the fibres are then heated in a pressure vessel or tube in which the amount of formaldehyde necessary for the hardening process is volatilized in the presence of steam at a temperature of 50 DEG -100 DEG C. or into which the necessary amount of formaldehyde is introduced in the gaseous state at 50 DEG -100 DEG C. until, after washing out, the shrinkage of the fibres in boiling water amounts to no more than 10%. In the manufacture of crimped staple fibres the sliver may be cut and crimped prior to impregnation with the hardening bath or after hardening and washing.
GB2339258A 1957-07-19 1958-07-21 Manufacture of polyvinyl alcohol fibres Expired GB879193A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1957F0023526 DE1173208B (en) 1957-07-19 1957-07-19 Process for the production of low-shrinkage polyvinyl alcohol threads or fibers

Publications (1)

Publication Number Publication Date
GB879193A true GB879193A (en) 1961-10-04

Family

ID=45990689

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2339258A Expired GB879193A (en) 1957-07-19 1958-07-21 Manufacture of polyvinyl alcohol fibres

Country Status (5)

Country Link
BE (1) BE569599A (en)
DE (1) DE1173208B (en)
FR (1) FR1366711A (en)
GB (1) GB879193A (en)
NL (1) NL229557A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3492079A (en) * 1964-04-22 1970-01-27 Rhodiaceta Acetalisation of polyvinyl alcohol yarns

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2639970A (en) * 1949-05-18 1953-05-26 Omni Products Corp Treatment of polyvinyl alcohol fibers by dielectric heating
DE1003173B (en) * 1952-12-27 1957-02-28 Wacker Chemie Gmbh Process for finishing threads made of polyvinyl alcohol

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3492079A (en) * 1964-04-22 1970-01-27 Rhodiaceta Acetalisation of polyvinyl alcohol yarns

Also Published As

Publication number Publication date
NL229557A (en) 1964-11-20
FR1366711A (en) 1964-07-17
BE569599A (en) 1959-01-19
DE1173208B (en) 1964-07-02

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