GB1043871A - Method of preparing polyfluoroethylene yarn - Google Patents

Method of preparing polyfluoroethylene yarn

Info

Publication number
GB1043871A
GB1043871A GB4074/64A GB407464A GB1043871A GB 1043871 A GB1043871 A GB 1043871A GB 4074/64 A GB4074/64 A GB 4074/64A GB 407464 A GB407464 A GB 407464A GB 1043871 A GB1043871 A GB 1043871A
Authority
GB
United Kingdom
Prior art keywords
yarn
polymer
cellulose
viscose
filaments
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
GB4074/64A
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.)
Toray Industries Inc
Original Assignee
Toyo Rayon Co 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 Toyo Rayon Co Ltd filed Critical Toyo Rayon Co Ltd
Publication of GB1043871A publication Critical patent/GB1043871A/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
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
    • D01F2/08—Composition of the spinning solution or the bath
    • D01F2/10—Addition to the spinning solution or spinning bath of substances which exert their effect equally well in either
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08L27/18—Homopolymers or copolymers or tetrafluoroethene
    • 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
    • D01F6/08—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 halogenated hydrocarbons
    • D01F6/12—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 halogenated hydrocarbons from polymers of fluorinated hydrocarbons
    • 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
    • D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/48—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polymers of halogenated hydrocarbons

Abstract

1,043,871. Heat treating polyfluoroethyleneregenerated cellulose fibres. TOYO RAYON KABUSHIKI KAISHA. Jan. 30, 1964 [Feb. 7, 1963; May 8, 1963]. No. 4074/64. Heading B5B." ' ..<SP>:</SP> In the known process of treating yarns consisting of a mixture of regenerated cellulose and fluoroethylene polymer by heating them to a temperature sufficiently high to cause the fluoro particles in the yarn to coalesce (the yarn having been produced by the known process of wet spinning a mixture of viscose and an aqueous emulsion of the fluoro polymer into an aqueous acid and salt coagulating bath) the yarn before heat treatment is first washed with water until the percentages of acid and salt remaining in the yarn (calculated on the dry yarn) are reduced to below 0.05% and 5% respectively, and then contacted with a dilute aqueous solution of an alkali in such a manner that the yarn takes up 0.001 to 2% by weight of the alkali (calculated on the dry yarn). The ammonium chloride number (Hottenroth-Zahl) of the viscose is preferably below 13, e.g. 2 to 6, and the mixture of viscose and polymer emulsion wet spun to produce the yarn may contain 60 to 96% of the fluoro polymer (based on polymer plus cellulose). The fluoro-ethylene polymer may be polytetrafluoro-ethylene. The heat treatment may be conducted at a temperature of about 300‹ to 400‹ C. and in any ease is sufficient to carbonize or burn off the cellulose component of the yarn. The alkali used in the treatment of the yarn may be a hydroxide, carbonate, bicarbonate or sulphide of an alkali metal, e.g. caustic soda or. caustic potash. The polymer emulsion may contain 20 to 75% of polytetrafluoroethylene and 3 to 10% (based on the polymer) of a non-ionic or anionic dispersing agent. In an example, a mixture of 250 grams of viscose containing 8% cellulose and having an H 2 value of 4.0 with 300 grams of a 60% polytetrafluoroethylene emulsion and 9 grams of glycerine is wet spun into an aqueous coagulating bath containing 10% of sulphuric acid and 22% of sodium sulphate and the filaments thus formed passed through five baths of water which reduced the sodium sulphate and sulphuric acid contents of the filaments to 0À061 and 0À01% respectively. The filaments are then passed through a 0À05% aqueous solution of caustic soda, squeezed to 135% water content and passed in a sinuous path over four heating, rolls maintained at 330‹ to 360‹ C. The thus-treated filaments could be satisfactorily drawn at a draw ratio of 8: 1 in a bath of a molten salt maintained at 340‹ C.
GB4074/64A 1963-02-07 1964-01-30 Method of preparing polyfluoroethylene yarn Expired GB1043871A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP482563 1963-02-07
JP2352363 1963-05-08

Publications (1)

Publication Number Publication Date
GB1043871A true GB1043871A (en) 1966-09-28

Family

ID=26338668

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4074/64A Expired GB1043871A (en) 1963-02-07 1964-01-30 Method of preparing polyfluoroethylene yarn

Country Status (3)

Country Link
US (1) US3397944A (en)
DE (1) DE1494748C3 (en)
GB (1) GB1043871A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5723081A (en) * 1996-12-20 1998-03-03 E. I. Du Pont De Nemours And Company Dispersion spinning process for polytetrafluoroethylene and related polymers
US5762846A (en) * 1996-12-20 1998-06-09 E. I. Du Pont De Nemours And Company Dispersion spinning process for polytetrafluoroethylene and related polymers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070173159A1 (en) * 2006-01-24 2007-07-26 Kishio Miwa Blend of polytetrafluoroethylene, glass and polyphenylene sulfide fibers and filter felt made from same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1977533A (en) * 1933-12-29 1934-10-16 American Enka Corp Method of desulphurizing rayon
US2074076A (en) * 1935-07-03 1937-03-16 American Enka Corp Manufacture of artificial silk
NL51025C (en) * 1938-04-12
US2488667A (en) * 1946-08-12 1949-11-22 American Enka Corp Processing of rayon packages
US2686103A (en) * 1950-05-24 1954-08-10 Du Pont Process of modifying regenerated cellulose and product resulting therefrom
US2772444A (en) * 1954-08-12 1956-12-04 Du Pont Composition comprising a polyhalogenated ethylene polymer and viscose and process of shaping the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5723081A (en) * 1996-12-20 1998-03-03 E. I. Du Pont De Nemours And Company Dispersion spinning process for polytetrafluoroethylene and related polymers
US5762846A (en) * 1996-12-20 1998-06-09 E. I. Du Pont De Nemours And Company Dispersion spinning process for polytetrafluoroethylene and related polymers

Also Published As

Publication number Publication date
US3397944A (en) 1968-08-20
DE1494748C3 (en) 1974-03-21
DE1494748B2 (en) 1973-08-09
DE1494748A1 (en) 1970-12-03

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