GB837198A - Improved filled polytetrafluoroethylene products and method for the production thereof - Google Patents

Improved filled polytetrafluoroethylene products and method for the production thereof

Info

Publication number
GB837198A
GB837198A GB8739/56A GB873956A GB837198A GB 837198 A GB837198 A GB 837198A GB 8739/56 A GB8739/56 A GB 8739/56A GB 873956 A GB873956 A GB 873956A GB 837198 A GB837198 A GB 837198A
Authority
GB
United Kingdom
Prior art keywords
liquid
polytetrafluoroethylene
mixture
wetter
microns
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
GB8739/56A
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.)
Polymer Corp
Original Assignee
Polymer Corp
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 Polymer Corp filed Critical Polymer Corp
Publication of GB837198A publication Critical patent/GB837198A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/013—Fillers, pigments or reinforcing additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Paints Or Removers (AREA)

Abstract

Articles are made from a composition which comprises an inert inorganic substance of particle size between 0.05 and 20 microns and polytetrafluoroethylene of particle size less than 2 microns and in which the filler comprises 50 to 85% of the combined volume of the mixture by intermixing the polytetrafluoroethylene and filler particles in the presence of a liquid wetter for the polymer. In a modification the mixture may be mechanically worked to at least partially orient the polytetrafluoroethylene into fibrous form. The liquid is preferably an organic liquid, although water may be used alone or in admixture with the organic liquid. Liquid wetters which facilitate extrusion may also be used. The wetter may be acetone, alcohol, naphtha, a hydrocarbon, an aliphatic or aromatic halogenated hydrocarbon, an alcohol, a glycol, an ester, an ether, a ketone, a silicone oil, tricresyl phosphate, benzene toluene, or p-xylene. Fillers mentioned are iron particularly carbonyl iron, milled 1/32 inch glass fibres, graphite, and molybdenum disulphide. The articles may be formed from the mixture by calendering, or moulding under heat and pressure e.g. at temperatures up to 627 DEG F. Specification 837,199 is referred to.
GB8739/56A 1954-06-28 1956-03-20 Improved filled polytetrafluoroethylene products and method for the production thereof Expired GB837198A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US43992554A 1954-06-28 1954-06-28
US49545655A 1955-03-21 1955-03-21

Publications (1)

Publication Number Publication Date
GB837198A true GB837198A (en) 1960-06-09

Family

ID=27032221

Family Applications (2)

Application Number Title Priority Date Filing Date
GB3813/58A Expired GB837199A (en) 1954-06-28 1956-03-20 Improved polytetrafluoroethylene products and method for the production thereof
GB8739/56A Expired GB837198A (en) 1954-06-28 1956-03-20 Improved filled polytetrafluoroethylene products and method for the production thereof

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB3813/58A Expired GB837199A (en) 1954-06-28 1956-03-20 Improved polytetrafluoroethylene products and method for the production thereof

Country Status (3)

Country Link
CH (2) CH376661A (en)
GB (2) GB837199A (en)
NL (1) NL270228A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3224966A (en) * 1962-03-07 1965-12-21 Honeywell Inc Low friction material
US3447486A (en) * 1965-12-14 1969-06-03 Dreibholz & Co Ltd Pellet machine die
DE2019766A1 (en) * 1969-04-23 1970-11-19 Composite Sciences Moulded body of fibrous polymer and sinter - ed finely dispersed material for heating
FR2338690A1 (en) * 1976-01-23 1977-08-19 Zimmer Usa Inc IMPLANTABLE PROSTHESIS FOR BONE JOINTS
GB2311072A (en) * 1996-03-13 1997-09-17 Flexitallic Sealing Materials PTFE sealing material
US7976720B2 (en) * 2006-02-14 2011-07-12 Sumida Corporation Composite magnetic sheet and production method thereof
WO2013004966A1 (en) * 2011-07-04 2013-01-10 Mersen France Py Sas Method for manufacturing polytetrafluoroethylene parts

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013216648A1 (en) * 2013-08-22 2015-02-26 Leibniz-Institut Für Polymerforschung Dresden E.V. SILICONE OIL PTFE DISPERSIONS AND METHOD FOR THEIR PREPARATION AND USE

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3224966A (en) * 1962-03-07 1965-12-21 Honeywell Inc Low friction material
US3447486A (en) * 1965-12-14 1969-06-03 Dreibholz & Co Ltd Pellet machine die
DE2019766A1 (en) * 1969-04-23 1970-11-19 Composite Sciences Moulded body of fibrous polymer and sinter - ed finely dispersed material for heating
FR2338690A1 (en) * 1976-01-23 1977-08-19 Zimmer Usa Inc IMPLANTABLE PROSTHESIS FOR BONE JOINTS
GB2311072A (en) * 1996-03-13 1997-09-17 Flexitallic Sealing Materials PTFE sealing material
US7976720B2 (en) * 2006-02-14 2011-07-12 Sumida Corporation Composite magnetic sheet and production method thereof
WO2013004966A1 (en) * 2011-07-04 2013-01-10 Mersen France Py Sas Method for manufacturing polytetrafluoroethylene parts
FR2977523A1 (en) * 2011-07-04 2013-01-11 Mersen France Py Sas PROCESS FOR MANUFACTURING POLYTETRAFLUOROETHYLENE PARTS

Also Published As

Publication number Publication date
CH376661A (en) 1964-04-15
CH431060A (en) 1967-02-28
GB837199A (en) 1960-06-09
NL270228A (en)

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