GB1085983A - Hollow filaments of a tetrafluoroethylene polymer and process for preparing them - Google Patents

Hollow filaments of a tetrafluoroethylene polymer and process for preparing them

Info

Publication number
GB1085983A
GB1085983A GB49400/64A GB4940064A GB1085983A GB 1085983 A GB1085983 A GB 1085983A GB 49400/64 A GB49400/64 A GB 49400/64A GB 4940064 A GB4940064 A GB 4940064A GB 1085983 A GB1085983 A GB 1085983A
Authority
GB
United Kingdom
Prior art keywords
weight
tetrafluoroethylene
polymer
tetrafluoroethylene polymer
cellulose
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
GB49400/64A
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.)
DIAKIN KOGYO KK
Original Assignee
DIAKIN KOGYO KK
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 DIAKIN KOGYO KK filed Critical DIAKIN KOGYO KK
Publication of GB1085983A publication Critical patent/GB1085983A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
    • 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
    • D01F6/28—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/32—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds comprising halogenated hydrocarbons as the major constituent
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2973—Particular cross section
    • Y10T428/2975—Tubular or cellular
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/3154—Of fluorinated addition polymer from unsaturated monomers

Abstract

1,085,983. Hollow polytetrafluoroethylene filaments. DAIKIN KOGYO KABUSHIKI KAISHA. Dec. 4, 1964 [Dec. 6, 1963], No. 49400/64. Heading B5B. A hollow filament consisting of a solid ethylene in which the area of the wall of a tetrafluoroethylene polymer containing at least 70% by weight of polytetrafluoroethylene enclosing an axial cavity along the whole length of the filament, the relative volumes of the cavity and the wall being such that the cavity portion of the total cross-sectional area of the filament is 5 to 90% may be made by wet spin. ning a mixture of a viscose and an aqueous dispersion of the tetrafluoroethylene polymer into a coagulating bath maintained at a temperature within the range 50‹ to 100‹'C. and consisting of an aqueous solution of either sulphuric acid of 6 to 60% by weight concentration, or con. taining not more than 6% sulphuric acid and not less than 5% of a water-soluble sulphate, or containing 1 to 30% by weight of hydrochloric acid or 1 to 50% by weight of nitric acid, the spinning solution containing 0À4 to 8% by weight of cellulose and tetrafluoroethylene polymer in such a concentration as to constitute 70 to 99% of the combined weight of cellulose and polymer in the solution. The tetrafluoroethylene polymer may be a homopolymer or a copolymer of tetrafluoroethylene with hexafluoropropylene, trifluorochloroethylene or vinyl chloride containing in each case at least 70% by weight of tetrafluoroethylene. The filaments produced in the wet spinning step consist of a mixture of tetrafluoroethylene polymer particles and regenerated cellulose and after washing and drying are heated to a temperature sufficiently high to cause the particles of polymer to coalesce and the cellulose to decompose.
GB49400/64A 1963-12-06 1964-12-04 Hollow filaments of a tetrafluoroethylene polymer and process for preparing them Expired GB1085983A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6577463 1963-12-06

Publications (1)

Publication Number Publication Date
GB1085983A true GB1085983A (en) 1967-10-04

Family

ID=13296695

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49400/64A Expired GB1085983A (en) 1963-12-06 1964-12-04 Hollow filaments of a tetrafluoroethylene polymer and process for preparing them

Country Status (3)

Country Link
US (1) US3372082A (en)
DE (1) DE1494574A1 (en)
GB (1) GB1085983A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE31732E (en) * 1970-08-17 1984-11-13 E. I. Du Pont De Nemours And Company Plastic heat exchange apparatus
US6436135B1 (en) 1974-10-24 2002-08-20 David Goldfarb Prosthetic vascular graft
US4208371A (en) * 1978-07-07 1980-06-17 E. I. Du Pont De Nemours And Company Gaseous contaminant dosimeter with diffusion device therefor and method
GB2138738B (en) * 1983-04-01 1986-10-22 Kureha Chemical Ind Co Ltd Ultrafine fiber of an ethylene tetrafluoride copolymer and a porous membrane thereof
US8366980B2 (en) * 2007-07-31 2013-02-05 Stella Chemifa Corporation Method for producing hollow structual body

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2772444A (en) * 1954-08-12 1956-12-04 Du Pont Composition comprising a polyhalogenated ethylene polymer and viscose and process of shaping the same
US2855321A (en) * 1955-03-30 1958-10-07 Du Pont Viscose process
US3194861A (en) * 1957-03-25 1965-07-13 Beaunit Corp Viscose spinning process and bath

Also Published As

Publication number Publication date
US3372082A (en) 1968-03-05
DE1494574A1 (en) 1969-04-30

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