GB732135A - Improvements in and relating to the production of artificial threads, fibres, filaments and the like - Google Patents

Improvements in and relating to the production of artificial threads, fibres, filaments and the like

Info

Publication number
GB732135A
GB732135A GB2126152A GB2126152A GB732135A GB 732135 A GB732135 A GB 732135A GB 2126152 A GB2126152 A GB 2126152A GB 2126152 A GB2126152 A GB 2126152A GB 732135 A GB732135 A GB 732135A
Authority
GB
United Kingdom
Prior art keywords
per cent
calcium
water
solution
bath
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
GB2126152A
Inventor
Albert Walter Bennett
Richard Neville Timms
Harold Malcolm Gordon Williams
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.)
Akzo Nobel UK PLC
Original Assignee
Courtaulds PLC
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 Courtaulds PLC filed Critical Courtaulds PLC
Priority to GB2126152A priority Critical patent/GB732135A/en
Priority to FR1082123D priority patent/FR1082123A/en
Publication of GB732135A publication Critical patent/GB732135A/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)

Abstract

Artificial threads, fibres, filaments and the like of a polyacrylonitrile are obtained by extruding a solution of the polymer in a concentrated aqueous solution of a water-soluble salt, which yields highly hydrated ions in aqueous solution, into an aqueous coagulating bath in which at least 5 per cent by weight of the water-soluble salt is dissolved, and which also contains a water-miscible alcohol such as methanol or ethanol, preferably in a proportion of at least 5 per cent by weight of the coagulating bath. The coagulating bath may be used at a temperature of 10 DEG C. or lower, or at a higher temperature, e.g. 15-25 DEG C. or up to 40 DEG C. The water-soluble salt employed in the spinning solution and in the coagulating bath may be zinc chloride, calcium chloride, lithium bromide, calcium bromide, calcium iodide, zinc nitrate, calcium nitrate, aluminium perchlorate or a thiocyanate of sodium, calcium or zinc. An organic salt such as guanidine thiocyanate may be used. To avoid undesired increase in the concentration of the salt in the coagulation bath, aqueous alcohol may be added to the bath during the course of a continuous spinning operation. In an example, a copolymer of acrylonitrile (90 per cent) and methyl acrylate (10 per cent), having a molecular weight of about 100,000, is dissolved in a 50 per cent aqueous solution of calcium thiocyanate to form a 7 per cent solution of the polymer. The solution is extruded into an aqueous solution containing 10 per cent of calcium thiocyanate and 10 per cent of methanol. The threads obtained are washed with water stretched in steam, and allowed to relax while heated. Part of the wash water is added to the coagulating bath and methanol is pumped in to maintain the bath composition substantially constant. Calcium thiocyanate is recovered as a solution from the used coagulating liquid by distillation to remove firstly the methanol and then sufficient water to give an aqueous solution for use in dissolving fresh polymer. Specifications 459,596, 672,775 and 715,915 are referred to.
GB2126152A 1952-08-25 1952-08-25 Improvements in and relating to the production of artificial threads, fibres, filaments and the like Expired GB732135A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2126152A GB732135A (en) 1952-08-25 1952-08-25 Improvements in and relating to the production of artificial threads, fibres, filaments and the like
FR1082123D FR1082123A (en) 1952-08-25 1953-08-04 Improvements in the manufacture of yarns, fibers, filaments and other similar artificial products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2126152A GB732135A (en) 1952-08-25 1952-08-25 Improvements in and relating to the production of artificial threads, fibres, filaments and the like

Publications (1)

Publication Number Publication Date
GB732135A true GB732135A (en) 1955-06-22

Family

ID=10159922

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2126152A Expired GB732135A (en) 1952-08-25 1952-08-25 Improvements in and relating to the production of artificial threads, fibres, filaments and the like

Country Status (2)

Country Link
FR (1) FR1082123A (en)
GB (1) GB732135A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116334778A (en) * 2023-05-26 2023-06-27 吉林富博纤维研究院有限公司 Preparation method of high-performance PAN-based carbon fiber precursor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116334778A (en) * 2023-05-26 2023-06-27 吉林富博纤维研究院有限公司 Preparation method of high-performance PAN-based carbon fiber precursor
CN116334778B (en) * 2023-05-26 2023-07-21 吉林富博纤维研究院有限公司 Preparation method of high-performance PAN-based carbon fiber precursor

Also Published As

Publication number Publication date
FR1082123A (en) 1954-12-27

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