ZA807756B - Fluoropolymers with shell-modified particles,and processes for their preparation - Google Patents

Fluoropolymers with shell-modified particles,and processes for their preparation

Info

Publication number
ZA807756B
ZA807756B ZA00807756A ZA807756A ZA807756B ZA 807756 B ZA807756 B ZA 807756B ZA 00807756 A ZA00807756 A ZA 00807756A ZA 807756 A ZA807756 A ZA 807756A ZA 807756 B ZA807756 B ZA 807756B
Authority
ZA
South Africa
Prior art keywords
fluoropolymers
shell
processes
preparation
modified particles
Prior art date
Application number
ZA00807756A
Other languages
English (en)
Inventor
J Kuhls
F Mayer
H Fitz
Original Assignee
Hoechst Ag
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 Hoechst Ag filed Critical Hoechst Ag
Publication of ZA807756B publication Critical patent/ZA807756B/xx

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/443Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds
    • H01B3/445Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds from vinylfluorides or other fluoroethylenic compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F259/00Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00
    • C08F259/08Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00 on to polymers containing fluorine
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F285/00Macromolecular compounds obtained by polymerising monomers on to preformed graft polymers
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S525/00Synthetic resins or natural rubbers -- part of the class 520 series
    • Y10S525/902Core-shell

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymerisation Methods In General (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
ZA00807756A 1979-12-12 1980-12-11 Fluoropolymers with shell-modified particles,and processes for their preparation ZA807756B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792949907 DE2949907A1 (de) 1979-12-12 1979-12-12 Fluorpolymere mit schalenmodifizierten teilchen und verfahren zu deren herstellung

Publications (1)

Publication Number Publication Date
ZA807756B true ZA807756B (en) 1982-01-27

Family

ID=6088221

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00807756A ZA807756B (en) 1979-12-12 1980-12-11 Fluoropolymers with shell-modified particles,and processes for their preparation

Country Status (7)

Country Link
US (1) US4391940A (fr)
EP (1) EP0030663B1 (fr)
JP (1) JPS5692943A (fr)
CA (1) CA1159591A (fr)
DE (2) DE2949907A1 (fr)
ES (1) ES497512A0 (fr)
ZA (1) ZA807756B (fr)

Families Citing this family (91)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4380618A (en) * 1981-08-21 1983-04-19 E. I. Du Pont De Nemours And Company Batch polymerization process
US4636549A (en) * 1982-12-13 1987-01-13 E. I. Du Pont De Nemours And Company Tetrafluoroethylene copolymers
US4469846A (en) * 1983-05-20 1984-09-04 E. I. Du Pont De Nemours And Company Core/shell fluoropolymer compositions
US4732941A (en) * 1985-07-05 1988-03-22 Kansai Paint Company, Limited Process for preparing a stable dispersion of vinyl polymer
JPS62109846A (ja) * 1985-11-06 1987-05-21 Daikin Ind Ltd 含フツ素共重合体粒子水性分散体ならびに含フツ素共重合体粒子オルガノゾル組成物
JPS6356532A (ja) * 1986-08-27 1988-03-11 Daikin Ind Ltd 変性ポリテトラフルオロエチレンファインパウダ−及びその製造方法
US4859745A (en) * 1987-12-22 1989-08-22 The Dow Chemical Company Stratified fibrous fluoropolymer compositions and process for forming such fluoropolymers
US4879362A (en) * 1987-12-31 1989-11-07 E. I. Dupont De Nemours And Company Modified polytetrafluoroethylene resins
CA1339337C (fr) * 1987-12-31 1997-08-19 Charles Winfield Stewart Resines modifiees a base de polytetrafluoroethylene; melanges a base de ces resines
US4837267A (en) * 1988-03-21 1989-06-06 E. I. Du Pont De Nemours And Company Tetrafluoroethylene copolymers
JP2611400B2 (ja) * 1988-12-12 1997-05-21 ダイキン工業株式会社 含フッ素重合体水性分散体および含フッ素重合体オルガノゾル組成物
DE4305619A1 (de) * 1993-02-24 1994-08-25 Hoechst Ag Feinteilige Dispersionen von thermoplastischen Fluorpolymeren
DE4402694A1 (de) * 1993-06-02 1995-08-03 Hoechst Ag Verfahren zur Rückgewinnung von fluorierten Carbonsäuren
WO1995008582A1 (fr) * 1993-09-22 1995-03-30 Daikin Industries, Ltd. Dispersion aqueuse de fluorocopolymere
DE4340943A1 (de) * 1993-12-01 1995-06-08 Hoechst Ag Wäßrige Dispersion von Fluorpolymerisaten, ihre Herstellung und Verwendung für Beschichtungen
JP3702468B2 (ja) * 1995-12-20 2005-10-05 イー・アイ・デユポン・ドウ・ヌムール・アンド・カンパニー パーフルオロ重合体の製造における連鎖移動剤としてのヨードニトリル
DE19726802C1 (de) 1997-06-24 1998-06-10 Dyneon Gmbh Wäßrige Dispersion von Fluorpolymeren unterschiedlicher Teilchengröße
DE19857111A1 (de) * 1998-12-11 2000-06-15 Dyneon Gmbh Wäßrige Dispersionen von Fluorpolymeren
US6794550B2 (en) 2000-04-14 2004-09-21 3M Innovative Properties Company Method of making an aqueous dispersion of fluoropolymers
JP2002003514A (ja) 2000-06-19 2002-01-09 Du Pont Mitsui Fluorochem Co Ltd テトラフルオロエチレン・パーフルオロ(アルキルビニルエーテル)共重合体の製造方法
IT1318633B1 (it) * 2000-07-20 2003-08-27 Ausimont Spa Polveri fini di politetrafluoroetilene.
US7253240B2 (en) * 2000-11-30 2007-08-07 3M Innovative Properties Company Explosion-free process for the production of polytetrafluoroethylene
US7279522B2 (en) 2001-09-05 2007-10-09 3M Innovative Properties Company Fluoropolymer dispersions containing no or little low molecular weight fluorinated surfactant
US6956078B2 (en) * 2002-01-04 2005-10-18 E.I. Du Pont De Nemours And Company Concentrated fluoropolymer dispersions
US6822059B2 (en) 2002-04-05 2004-11-23 3M Innovative Properties Company Dispersions containing bicomponent fluoropolymer particles and use thereof
US6833418B2 (en) 2002-04-05 2004-12-21 3M Innovative Properties Company Dispersions containing perfluorovinyl ether homopolymers and use thereof
JP4466002B2 (ja) * 2002-12-06 2010-05-26 旭硝子株式会社 テトラフルオロエチレン共重合体、その製造方法およびペースト押し出し成形物
US6734264B1 (en) * 2002-12-16 2004-05-11 Atofina Chemicals, Inc. Chain transfer agent
EP1441014A1 (fr) * 2003-01-22 2004-07-28 3M Innovative Properties Company Dispersion aqueuse d'un polymère fluoré comprenant un polymère fluoré thermoprocessable avec un contenu réduit de surfactants fluorés
DK1641421T3 (en) * 2003-07-03 2019-03-11 Hdl Therapeutics Inc Methods and apparatus for producing HDL particle derivatives of reduced lipid content
ATE502062T1 (de) * 2003-10-24 2011-04-15 3M Innovative Properties Co Wässrige dispersionen von polytetrafluorethylenteilchen
EP1533325B1 (fr) * 2003-11-17 2011-10-19 3M Innovative Properties Company Dispersions aqueuses de polytétrafluoroéthylène avec un contenu réduit de surfactants fluorés
EP1561742B1 (fr) * 2004-02-05 2012-11-21 3M Innovative Properties Company Procédé de récupération de tensioactifs acide fluorés à partir des adsorbants chargés en ces tensioactifs
EP1570917B1 (fr) * 2004-03-01 2009-06-10 3M Innovative Properties Company Procédé de revêtement d'un substrat avec une dispersion de polymère fluoré
JP4774675B2 (ja) * 2004-04-07 2011-09-14 ダイキン工業株式会社 変性ポリテトラフルオロエチレン粉末及びテトラフルオロエチレン重合体の製造方法
EP1614731B1 (fr) * 2004-07-05 2008-08-27 3M Innovative Properties Company Revêtement primaire à base de PTFE pour substrat métallique
ATE540061T1 (de) * 2004-11-16 2012-01-15 Daikin Ind Ltd Feines pulver aus modifiziertem polytetrafluorethylen und formkörper aus modifiziertem polytetrafluorethylen
EP1700869A1 (fr) * 2005-03-11 2006-09-13 3M Innovative Properties Company Récupération de tensioactifs fluorés d'une résine basique anionique contenant des groupes ammonium quaternaire
GB2427170A (en) * 2005-06-17 2006-12-20 3M Innovative Properties Co Fluoropolymer film having glass microspheres
GB0525978D0 (en) * 2005-12-21 2006-02-01 3M Innovative Properties Co Fluorinated Surfactants For Making Fluoropolymers
GB0523853D0 (en) 2005-11-24 2006-01-04 3M Innovative Properties Co Fluorinated surfactants for use in making a fluoropolymer
US20080015304A1 (en) * 2006-07-13 2008-01-17 Klaus Hintzer Aqueous emulsion polymerization process for producing fluoropolymers
GB0514387D0 (en) * 2005-07-15 2005-08-17 3M Innovative Properties Co Aqueous emulsion polymerization of fluorinated monomers using a perfluoropolyether surfactant
GB0514398D0 (en) * 2005-07-15 2005-08-17 3M Innovative Properties Co Aqueous emulsion polymerization of fluorinated monomers using a fluorinated surfactant
US7671112B2 (en) * 2005-07-15 2010-03-02 3M Innovative Properties Company Method of making fluoropolymer dispersion
US8133658B2 (en) * 2005-07-29 2012-03-13 Anocoil Corporation Non-chemical development of printing plates
US8343707B2 (en) 2005-07-29 2013-01-01 Anocoil Corporation Lithographic printing plate for in-solidus development on press
EP1910897A4 (fr) * 2005-07-29 2010-12-22 Anocoil Corp Plaque d'impression pouvant etre imagee pour developpement sur presse
US8377630B2 (en) * 2005-07-29 2013-02-19 Anocoil Corporation On-press plate development without contamination of fountain fluid
US8137897B2 (en) * 2005-07-29 2012-03-20 Anocoil Corporation Processless development of printing plate
GB2430437A (en) * 2005-09-27 2007-03-28 3M Innovative Properties Co Method of making a fluoropolymer
WO2007061914A1 (fr) * 2005-11-18 2007-05-31 E.I. Du Pont De Nemours And Company Polymere coeur/enveloppe
US20070117929A1 (en) 2005-11-18 2007-05-24 Burch Heidi E Fluoropolymer composition
US7728087B2 (en) 2005-12-23 2010-06-01 3M Innovative Properties Company Fluoropolymer dispersion and method for making the same
EP2017292B1 (fr) * 2006-05-10 2011-09-07 Daikin Industries, Ltd. Procede de production de polymeres fluores
US7754795B2 (en) * 2006-05-25 2010-07-13 3M Innovative Properties Company Coating composition
US20070276103A1 (en) * 2006-05-25 2007-11-29 3M Innovative Properties Company Fluorinated Surfactants
US8119750B2 (en) * 2006-07-13 2012-02-21 3M Innovative Properties Company Explosion taming surfactants for the production of perfluoropolymers
CN101605728B (zh) * 2007-02-16 2013-07-24 3M创新有限公司 用于从水中去除含氟化合物的系统和方法
US20080264864A1 (en) 2007-04-27 2008-10-30 3M Innovative Properties Company PROCESS FOR REMOVING FLUORINATED EMULSIFIER FROM FLUOROPOLMER DISPERSIONS USING AN ANION-EXCHANGE RESIN AND A pH-DEPENDENT SURFACTANT AND FLUOROPOLYMER DISPERSIONS CONTAINING A pH-DEPENDENT SURFACTANT
US20090030114A1 (en) * 2007-07-25 2009-01-29 Ying Wang Fluoropolymer emulsions
US8637144B2 (en) * 2007-10-04 2014-01-28 W. L. Gore & Associates, Inc. Expandable TFE copolymers, method of making, and porous, expended articles thereof
US9040646B2 (en) 2007-10-04 2015-05-26 W. L. Gore & Associates, Inc. Expandable TFE copolymers, methods of making, and porous, expanded articles thereof
US9650479B2 (en) 2007-10-04 2017-05-16 W. L. Gore & Associates, Inc. Dense articles formed from tetrafluoroethylene core shell copolymers and methods of making the same
US8628843B2 (en) * 2008-10-24 2014-01-14 Porex Corporation Composite PTFE materials and applications thereof
US9139669B2 (en) * 2009-03-24 2015-09-22 W. L. Gore & Associates, Inc. Expandable functional TFE copolymer fine powder, the expandable functional products obtained therefrom and reaction of the expanded products
US8658707B2 (en) 2009-03-24 2014-02-25 W. L. Gore & Associates, Inc. Expandable functional TFE copolymer fine powder, the expanded functional products obtained therefrom and reaction of the expanded products
RU2522749C2 (ru) 2009-07-31 2014-07-20 Зм Инновейтив Пропертиз Компани Соединения фторполимера, содержащие многоатомные соединения, и способы из производства
EP2477756A4 (fr) * 2009-09-16 2017-08-30 Sun Chemical Corporation Surfaces de revêtement structurées transparentes obtenues à partir de l'évaporation de l'eau
US8507601B2 (en) * 2009-11-09 2013-08-13 E. I. Du Pont De Nemours And Company Method using fluoropolymer emulsions
US8329822B2 (en) * 2009-11-09 2012-12-11 E.I. Du Pont De Nemours And Company Fluoropolymer emulsions
EP2618339A3 (fr) * 2010-03-12 2013-10-30 General Cable Technologies Corporation Câble doté d'une isolation avec des particules d'oxyde
GB201007043D0 (en) 2010-04-28 2010-06-09 3M Innovative Properties Co Process for producing ptfe and articles thereof
EP2409998B1 (fr) 2010-07-23 2015-11-25 3M Innovative Properties Company Polymères PTFE à point de fusion élevé pour un traitement par fusion pour obtenir des articles formés
EP2837653B1 (fr) * 2012-04-11 2020-05-06 Sumitomo Electric Fine Polymer, Inc. Procédé de production de film microporeux de résine fluorée
EP2747092A1 (fr) * 2012-12-21 2014-06-25 Solvay SA Procédé pour pièces électriques actives diélectriquement isolantes
EP2803691B1 (fr) 2013-05-17 2016-04-20 3M Innovative Properties Company Compositions fluoropolymères contenant un tensioactif polyhydroxylé
EP2803690B1 (fr) 2013-05-17 2016-12-14 3M Innovative Properties Company Procédé pour réduire des émulsifiants fluorés à partir de dispersions fluoropolymères aqueuses à l'aide d'émulsifiants à base de sucre
EP2902424B1 (fr) 2014-01-31 2020-04-08 3M Innovative Properties Company Dispersions polymères de tétrafluoroéthène stabilisées avec des agents tensioactifs aliphatiques non ioniques
US9644054B2 (en) 2014-12-19 2017-05-09 W. L. Gore & Associates, Inc. Dense articles formed from tetrafluoroethylene core shell copolymers and methods of making the same
EP3103836A1 (fr) 2015-06-12 2016-12-14 3M Innovative Properties Company Fluoropolymère présentant une transparence améliorée
EP3374422A1 (fr) * 2015-11-11 2018-09-19 3M Innovative Properties Company Compositions de fluoropolymère conducteur
EP3284762A1 (fr) 2016-08-17 2018-02-21 3M Innovative Properties Company Fluoropolymeres comprenant tetrafluoroethylene et un ou plusieurs perfluorés allyle ether comonomères
WO2018229659A1 (fr) 2017-06-13 2018-12-20 3M Innovative Properties Company Polytétrafluoroéthylène modifié et dispersion aqueuse contenant ce dernier
DE202017003084U1 (de) 2017-06-13 2017-09-19 3M Innovative Properties Company Fluorpolymerdispersion
JP7031679B2 (ja) * 2017-09-28 2022-03-08 Agc株式会社 変性ポリテトラフルオロエチレン、成形物、延伸多孔体の製造方法
EP3527634A1 (fr) 2018-02-15 2019-08-21 3M Innovative Properties Company Fluoropolymères et dispersions de fluoropolymère
EP3640281A1 (fr) 2018-10-19 2020-04-22 3M Innovative Properties Company Poudre pulvérisable de particules de fluoropolymère
WO2021214664A1 (fr) 2020-04-21 2021-10-28 3M Innovative Properties Company Particules comprenant du polytétrafluoroéthylène et procédé de fabrication d'un article tridimensionnel
WO2022157099A1 (fr) 2021-01-20 2022-07-28 Solvay Specialty Polymers Italy S.P.A. Composition de polymères fluorés
TW202419485A (zh) 2022-08-10 2024-05-16 日商大金工業股份有限公司 改質聚四氟乙烯、及延伸體

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3142665A (en) * 1960-07-26 1964-07-28 Du Pont Novel tetrafluoroethylene resins and their preparation
DE1795078C3 (de) * 1968-08-07 1974-12-19 Farbwerke Hoechst Ag, Vormals Meister Lucius & Bruening, 6000 Frankfurt Wäßrige Polytetrafluoräthylen-Dispersionen, Verfahren zu ihrer Herstellung und ihre Verwendung
US3951930A (en) * 1971-08-12 1976-04-20 Imperial Chemical Industries Limited Extrusion powder
GB1460535A (en) * 1974-05-16 1977-01-06 Ici Ltd Tetrafluoroethylene polymers
JPS525890A (en) * 1975-07-03 1977-01-17 Daikin Ind Ltd Process for preparing a modified tetrafluoroethylenepolymer
US4036802A (en) * 1975-09-24 1977-07-19 E. I. Du Pont De Nemours And Company Tetrafluoroethylene copolymer fine powder resin
US4134995A (en) * 1976-05-03 1979-01-16 Daikin Kogyo Kabushiki Kaisha Modified tetrafluoroethylene polymer and process for producing same
JPS5679110A (en) * 1979-11-30 1981-06-29 Asahi Glass Co Ltd Preparation of modified polytetrafluoroethylene

Also Published As

Publication number Publication date
ES8107262A1 (es) 1981-10-16
EP0030663B1 (fr) 1983-10-12
CA1159591A (fr) 1983-12-27
JPS648022B2 (fr) 1989-02-10
ES497512A0 (es) 1981-10-16
EP0030663A2 (fr) 1981-06-24
JPS5692943A (en) 1981-07-28
DE3065322D1 (en) 1983-11-17
US4391940A (en) 1983-07-05
EP0030663A3 (en) 1981-09-30
DE2949907A1 (de) 1981-06-19

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