ATE304939T1 - Verfahren zur herstellung von zerreibbaren produkten aus polytetrafluorethylen - Google Patents

Verfahren zur herstellung von zerreibbaren produkten aus polytetrafluorethylen

Info

Publication number
ATE304939T1
ATE304939T1 AT98938152T AT98938152T ATE304939T1 AT E304939 T1 ATE304939 T1 AT E304939T1 AT 98938152 T AT98938152 T AT 98938152T AT 98938152 T AT98938152 T AT 98938152T AT E304939 T1 ATE304939 T1 AT E304939T1
Authority
AT
Austria
Prior art keywords
radiation
fritzable
polytetrafluorethylene
products
producing
Prior art date
Application number
AT98938152T
Other languages
English (en)
Inventor
Nicholas W Neuberg
George Poszmik
Manshi Sui
Original Assignee
Shamrock Tech Inc
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 Shamrock Tech Inc filed Critical Shamrock Tech Inc
Application granted granted Critical
Publication of ATE304939T1 publication Critical patent/ATE304939T1/de

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/28—Treatment by wave energy or particle radiation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00—Characterised by the use 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; Derivatives of such polymers
    • C08J2327/02—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/12—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene
    • 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
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
AT98938152T 1997-08-08 1998-07-30 Verfahren zur herstellung von zerreibbaren produkten aus polytetrafluorethylen ATE304939T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/908,576 US5891573A (en) 1997-08-08 1997-08-08 Method of providing friable polytetrafluoroethylene products
PCT/US1998/015869 WO1999007549A1 (en) 1997-08-08 1998-07-30 Method of providing friable polytetrafluoroethylene products

Publications (1)

Publication Number Publication Date
ATE304939T1 true ATE304939T1 (de) 2005-10-15

Family

ID=25425995

Family Applications (1)

Application Number Title Priority Date Filing Date
AT98938152T ATE304939T1 (de) 1997-08-08 1998-07-30 Verfahren zur herstellung von zerreibbaren produkten aus polytetrafluorethylen

Country Status (8)

Country Link
US (1) US5891573A (de)
EP (1) EP1001880B1 (de)
JP (1) JP4202595B2 (de)
AT (1) ATE304939T1 (de)
AU (1) AU738732B2 (de)
CA (1) CA2298839C (de)
DE (1) DE69831676T2 (de)
WO (1) WO1999007549A1 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003076734A (ja) * 2001-09-03 2003-03-14 Fujitsu Ltd 集積回路設計装置及び集積回路設計方法並びにプログラム
AU2003269802A1 (en) * 2002-03-14 2003-12-31 Shamrock Technologies, Inc. Methods for producing submicron polytetrafluoroethylene powder and products thereof
JP2005523964A (ja) 2002-04-23 2005-08-11 ラウレル プロダクツ，エルエルシー フルオロポリマーを処理する方法、およびその生成物
US6824872B2 (en) 2002-04-23 2004-11-30 Laurel Products Llc Surface-treating fluoropolymer powders using atmospheric plasma
US7491791B2 (en) * 2003-01-27 2009-02-17 Shamrock Technologies Inc. Method for producing submicron polytetrafluoroethylene powder and products thereof
EP1605012A1 (de) * 2004-06-10 2005-12-14 SOLVAY (Société Anonyme) Fluorpolymer-band, Fluorpolymer-band enthaltender Gegenstand und Verfahren zur Herstellung eines Fluorpolymer-bands
JP4797347B2 (ja) * 2004-08-25 2011-10-19 旭硝子株式会社 低分子量ポリテトラフルオロエチレン水性分散液の製造方法
JP5349028B2 (ja) * 2008-12-05 2013-11-20 昂 宇田川 改質された四フッ化エチレン樹脂粉末の製造方法及び改質された四フッ化エチレン樹脂粉末
US10538605B2 (en) 2016-08-04 2020-01-21 Daikin Industries, Ltd. Method for producing low molecular weight polytetrafluoroethylene, low molecular weight polytetrafluoroethylene, and powder
WO2018026012A1 (ja) 2016-08-04 2018-02-08 ダイキン工業株式会社 低分子量ポリテトラフルオロエチレンの製造方法、低分子量ポリテトラフルオロエチレン及び粉末
EP3750946B1 (de) * 2018-02-07 2024-12-04 Daikin Industries, Ltd. Verfahren zur herstellung einer zusammensetzung mit niedermolekularem polytetrafluorethylen
WO2020013336A1 (ja) * 2018-07-13 2020-01-16 国立大学法人大阪大学 低分子量ポリテトラフルオロエチレンの製造方法
WO2021145441A1 (ja) * 2020-01-15 2021-07-22 ダイキン工業株式会社 低分子量ポリテトラフルオロエチレンの製造方法、組成物及び低分子量ポリテトラフルオロエチレン

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2858442A (en) * 1954-03-18 1958-10-28 High Voltage Engineering Corp Apparatus for increasing the uniformity of dose distribution produced by electron irradiation
FR1437476A (fr) * 1965-02-26 1966-05-06 Saint Gobain Techn Nouvelles Procédé et dispositif pour l'irradiation de fluides ou de produits granuleux ou pulvérulents par exposition à une source de rayonnements ionisants
US3440466A (en) * 1965-09-30 1969-04-22 Ford Motor Co Window support and heat sink for electron-discharge device
FR2031747A5 (de) * 1969-02-06 1970-11-20 Commissariat Energie Atomique
US4036718A (en) * 1970-02-03 1977-07-19 Imperial Chemical Industries Limited Process for preparing a friable tetrafluoroethylene polymer powder from unsintered coagulated dispersion grade tetrafluoroethylene polymer
US4052278A (en) * 1970-02-03 1977-10-04 Imperial Chemical Industries Limited Finely divided, irradiated tetrafluorethylene polymers
US4029870A (en) * 1970-02-03 1977-06-14 Imperial Chemical Industries Limited Tetrafluoroethylene polymers
BE785797A (fr) * 1971-07-02 1973-01-03 Ici Ltd Compositions de polymeres du tetrafluoroethylene
US3838030A (en) * 1971-11-30 1974-09-24 Japan Atomic Energy Res Inst Process for preparing of polytetrafluoroethylene resin wax
US3766031A (en) * 1972-04-10 1973-10-16 Garlock Inc Process for non-destructive radiation degradation of polytetrafluoroethylene
US3780305A (en) * 1972-11-09 1973-12-18 Radiation Dev Co Ltd Apparatus for treating wood chips with electrons
DE2431522A1 (de) * 1974-07-01 1976-01-22 Kloeckner Humboldt Deutz Ag Verfahren zur kontinuierlichen trocknung von nassen, koernigen und/oder stueckigen guetern und vorrichtung zur durchfuehrung des verfahrens
US4110186A (en) * 1975-05-13 1978-08-29 Beatrice Foods Co. Fluorinated ethylene-propylene copolymer powders having improved adhesion to substrates and method
GB1516648A (en) * 1975-06-26 1978-07-05 Inst Khim Fiz An Sssr Process for regenerating used polytetrafluoroethylene
US4220511A (en) * 1979-03-12 1980-09-02 Radiation Dynamics, Inc. Treatment of sintered poly-tetrafluoroethylene with irradiation and heat to produce a grindable material
US4777192A (en) * 1982-05-03 1988-10-11 Shamrock Chemicals Corporation Apparatus and method for radiation processing of materials
US5576106A (en) * 1994-07-28 1996-11-19 E. I. Du Pont De Nemours And Company Grafted fluoropolymer powders

Also Published As

Publication number Publication date
AU8674298A (en) 1999-03-01
JP2001513579A (ja) 2001-09-04
CA2298839C (en) 2007-10-23
AU738732B2 (en) 2001-09-27
DE69831676D1 (de) 2006-02-02
JP4202595B2 (ja) 2008-12-24
EP1001880A1 (de) 2000-05-24
EP1001880B1 (de) 2005-09-21
CA2298839A1 (en) 1999-02-18
EP1001880A4 (de) 2002-05-02
WO1999007549A1 (en) 1999-02-18
DE69831676T2 (de) 2006-07-06
US5891573A (en) 1999-04-06

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Legal Events

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