GB1204860A - Manufacture of synthetic fibres - Google Patents

Manufacture of synthetic fibres

Info

Publication number
GB1204860A
GB1204860A GB3951267A GB3951267A GB1204860A GB 1204860 A GB1204860 A GB 1204860A GB 3951267 A GB3951267 A GB 3951267A GB 3951267 A GB3951267 A GB 3951267A GB 1204860 A GB1204860 A GB 1204860A
Authority
GB
United Kingdom
Prior art keywords
filaments
acrylonitrile
stream
weight
dmf
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
GB3951267A
Inventor
Olof Sunden
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.)
Humphreys and Glasgow Ltd
Original Assignee
Humphreys and Glasgow Ltd
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 Humphreys and Glasgow Ltd filed Critical Humphreys and Glasgow Ltd
Priority to GB3951267A priority Critical patent/GB1204860A/en
Publication of GB1204860A publication Critical patent/GB1204860A/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
    • D01F6/28—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

Abstract

1,204,860. Acrylonitrile copolymer. HUMPHREYS & GLASGOW Ltd. 29 Aug., 1968 [29 Aug., 1967], No. 39512/67. Heading B5B. Soil-resistant filaments of acrylonitrile copolymers are produced by extruding a solution of the polymer in dimethyl formamide (DMF) into a stream of essentially aliphatic hydrocarbons of initial boiling point above 140‹ C., preferably kerosene, and containing not more than 2% by weight of aromatic hydrocarbons, to precipitate the polymer and to form the filaments, the stream being maintained between 100‹ to 150‹ C. Residual DMF is removed from the filaments by washing in hot water until the filaments contain less than 2% by weight of DMF, which are then dried above 100‹ C., tension being applied to the filaments during the washing and drying steps. A final stretching and orientation of the filaments is then carried out above 175‹ C. The filaments can then be relaxed in a chamber with wet steam and allowed to shrink before crimping, followed by steam setting and cutting into fibres. Preferably, the extruded filaments are fed countercurrent to the stream of kerosene and are preferably dried by passage over heated rollers. The acrylonitrile copolymers used are those described in patent Specification 824,225 and include copolymers of acrylonitrile with acrylic and methaorylic acid, esters and amides thereof and comprise at least 85 mol. per cent of acrylonitrile and up to 15% of copolymerizable comonomer. The filaments have a very smooth outer surface, but have numerous internal closed cavities, and preferably contain not more than 6% by weight of hydrocarbons.
GB3951267A 1967-08-29 1967-08-29 Manufacture of synthetic fibres Expired GB1204860A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3951267A GB1204860A (en) 1967-08-29 1967-08-29 Manufacture of synthetic fibres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3951267A GB1204860A (en) 1967-08-29 1967-08-29 Manufacture of synthetic fibres

Publications (1)

Publication Number Publication Date
GB1204860A true GB1204860A (en) 1970-09-09

Family

ID=10409969

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3951267A Expired GB1204860A (en) 1967-08-29 1967-08-29 Manufacture of synthetic fibres

Country Status (1)

Country Link
GB (1) GB1204860A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0375650A2 (en) * 1988-12-23 1990-06-27 Monsanto Company An improvement in wet-spinning processes for producing acrylic filaments

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0375650A2 (en) * 1988-12-23 1990-06-27 Monsanto Company An improvement in wet-spinning processes for producing acrylic filaments
EP0375650A3 (en) * 1988-12-23 1991-04-17 Monsanto Company An improvement in wet-spinning processes for producing acrylic filaments

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Legal Events

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