ES2091077T3 - Micropolvos de poli(tetrafluoroetileno), su preparacion y su utilizacion. - Google Patents

Micropolvos de poli(tetrafluoroetileno), su preparacion y su utilizacion.

Info

Publication number
ES2091077T3
ES2091077T3 ES94114491T ES94114491T ES2091077T3 ES 2091077 T3 ES2091077 T3 ES 2091077T3 ES 94114491 T ES94114491 T ES 94114491T ES 94114491 T ES94114491 T ES 94114491T ES 2091077 T3 ES2091077 T3 ES 2091077T3
Authority
ES
Spain
Prior art keywords
micropowder
polymerization
poli
tetrafluoroethylene
preparation
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 - Lifetime
Application number
ES94114491T
Other languages
English (en)
Inventor
Ludwig Dr Mayer
Kai-Uwe Dr Tonnes
Hermann Dipl-Ing Bladel
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.)
Hoechst AG
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
Application granted granted Critical
Publication of ES2091077T3 publication Critical patent/ES2091077T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • C08J3/12—Powdering or granulating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F14/00—Homopolymers and 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
    • C08F14/18—Monomers containing fluorine
    • C08F14/26—Tetrafluoroethene
    • 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
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L59/00—Compositions of polyacetals; Compositions of derivatives of polyacetals
    • 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)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymerisation Methods In General (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Polymerization Catalysts (AREA)
  • Graft Or Block Polymers (AREA)

Abstract

MICROPOLVO POLITETRAFLUORETILENO, QUE PUEDE CONTENER HASTA 3 % EN PESO EN COMONOMEROS, SIENDO OBTENIDO MEDIANTE POLIMERIZACION EN MEDIO ACUOSO CON HIDROGENO, METANO O ETANO COMO MEDIOS DE TRANSMISION DE CADENA Y DONDE SE DISPONE DE UNA OFERTA RADICAL QUE PERMANECE ESENCIALMENTE CONSTANTE A TRAVES DEL TIEMPO DE POLIMERIZACION CON UNA ZONA DE DISTRIBUCION DE PESO MOLECULAR ESTRECHO, UNA ZONA ESTRECHA DE SUPERFICIE ESPECIFICA Y UN TAMAÑO DE PARTICULAS PRIMARIAS DESDE 150 HASTA 250 NM. ESTOS MICROPOLVOS SON APROPIADOS ESPECIALMENTE PARA PREPARACIONES DE POLIACETALES, QUE EN LA ELABORACION DE COLADAS RESULTAN SOLAMENTE CON CAPAS PEQUEÑAS EN LOS MOLDES Y MUESTRAN UNA ALTA ESTABILIDAD DE COLORACION.
ES94114491T 1993-09-21 1994-09-15 Micropolvos de poli(tetrafluoroetileno), su preparacion y su utilizacion. Expired - Lifetime ES2091077T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4331971A DE4331971A1 (de) 1993-09-21 1993-09-21 Polytetrafluorethylen-Mikropulver, ihre Herstellung und Verwendung

Publications (1)

Publication Number Publication Date
ES2091077T3 true ES2091077T3 (es) 1996-10-16

Family

ID=6498149

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94114491T Expired - Lifetime ES2091077T3 (es) 1993-09-21 1994-09-15 Micropolvos de poli(tetrafluoroetileno), su preparacion y su utilizacion.

Country Status (5)

Country Link
US (1) US5641571A (es)
EP (1) EP0644209B1 (es)
JP (1) JP3640415B2 (es)
DE (2) DE4331971A1 (es)
ES (1) ES2091077T3 (es)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3271524B2 (ja) 1996-08-12 2002-04-02 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ファインパウダー及びその製造方法
ATE412018T1 (de) 1998-08-06 2008-11-15 Eidgenoess Tech Hochschule Schmelzverarbeitbares polytetrafluorethylen
US6737165B1 (en) * 1998-08-06 2004-05-18 Omlidon Technologies Llc Melt-processible poly(tetrafluoroethylene)
US7276287B2 (en) * 2003-12-17 2007-10-02 Eidgenössische Technische Hochschule Zürich Melt-processible poly(tetrafluoroethylene)
US6448302B1 (en) * 2000-01-19 2002-09-10 The Sherwin-Williams Company Radiation curable coatings having low gloss and coated articles made therefrom
JP4792622B2 (ja) * 2000-05-30 2011-10-12 旭硝子株式会社 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）共重合体及びその製造方法
CA2446016A1 (en) * 2001-05-02 2002-11-07 3M Innovative Properties Company Emulsifier free aqueous emulsion polymerization process for making fluoropolymers
US20030109646A1 (en) * 2001-11-21 2003-06-12 Daikin Institute Of Advanced Chemistry And Technology Resin composition and method of producing shaped articles
US6790213B2 (en) 2002-01-07 2004-09-14 C.R. Bard, Inc. Implantable prosthesis
US7176265B2 (en) * 2002-11-22 2007-02-13 E. I. Du Pont De Nemours And Company Directly polymerized low molecular weight granular polytetrafluoroethylene
EP1605011B1 (en) * 2003-02-28 2013-01-23 Daikin Industries, Ltd. Granulated powder of low-molecular polytetrafluoro- ethylene and powder of low-molecular polytetrafluoro- ethylene and processes for producing both
WO2009020187A1 (ja) 2007-08-07 2009-02-12 Daikin Industries, Ltd. 低分子量ポリテトラフルオロエチレン水性分散液、低分子量ポリテトラフルオロエチレン粉末及び低分子量ポリテトラフルオロエチレンの製造方法
TW200912963A (en) * 2007-08-08 2009-03-16 Daikin Ind Ltd Covered electric wire and coaxial cable
CA2966657C (en) 2008-10-03 2019-07-02 C.R. Bard, Inc. Implantable prosthesis
US8754176B2 (en) 2009-03-31 2014-06-17 Daikin Industries, Ltd. Low molecular weight polytetrafluoroethylene powder and preparation method therefor
TWI639462B (zh) 2012-04-20 2018-11-01 Daikin Industries, Ltd. 以聚四氟乙烯（ｐｔｆｅ）為主成分之組合物、混合粉末及成形用材料
TWI492978B (zh) 2013-07-24 2015-07-21 Grand Tek Advance Material Science Co Ltd 複合材料微粉、陶瓷塗料、保護塗層、與複合材料微粉的形成方法
WO2015060364A1 (ja) 2013-10-23 2015-04-30 ダイキン工業株式会社 エンボス加工されたエアフィルタ用濾材、フィルタパック、エアフィルタユニット、およびエンボス加工されたエアフィルタ用濾材の製造方法
CN108699319B (zh) * 2016-03-30 2021-06-22 三菱瓦斯化学株式会社 聚缩醛树脂组合物及其成型体
JP6673230B2 (ja) 2017-01-12 2020-03-25 ダイキン工業株式会社 エアフィルタ濾材
CN112770827B (zh) 2018-09-28 2026-05-05 大金工业株式会社 空气过滤器滤材、过滤包、空气过滤器单元以及这些的制造方法
JP7181480B2 (ja) 2021-02-04 2022-12-01 ダイキン工業株式会社 エアフィルタ濾材、エアフィルタ濾材の製造方法、マスク用濾材、および、プリーツ状マスク用濾材
WO2022255453A1 (ja) 2021-06-04 2022-12-08 ダイキン工業株式会社 エアフィルタ濾材、プリーツ状濾材、エアフィルタユニット、マスク用濾材、および、エアフィルタ濾材の再生方法
EP4563601A4 (en) 2022-07-27 2026-07-29 Daikin Ind Ltd POWDER CONTAINING LOW MOLECULAR WEIGHT POLYTETRAFLUOROETHYLENE PARTICLES, AND A PROCESS FOR MANUFACTURED THEREOF

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3629219A (en) * 1968-10-09 1971-12-21 Du Pont Process for increasing the surface area of granular polytetrafluoroethylene resin
US4076760A (en) * 1970-06-24 1978-02-28 Hoechst Aktiengesellschaft Process for the preparation of fluorocarbon waxes
US3956000A (en) * 1972-07-21 1976-05-11 Hoechst Aktiengesellschaft Fluorocarbon waxes and process for producing them
US3953412A (en) * 1972-08-09 1976-04-27 Takumi Saito Sintered micro-powder of tetrafluoroethylene polymers
DE2617829C2 (de) * 1976-04-23 1982-06-03 Hoechst Ag, 6000 Frankfurt Verfahren zur Herstellung von Suspensionspolymerisaten des Tetrafluoräthylens
DE2523569C3 (de) * 1975-05-28 1980-08-07 Hoechst Ag, 6000 Frankfurt Verfahren zur Polymerisation von Tetrafluoräthylen nach dem Suspensionsverfahren
US4036802A (en) * 1975-09-24 1977-07-19 E. I. Du Pont De Nemours And Company Tetrafluoroethylene copolymer fine powder resin
DE3135598A1 (de) * 1981-09-09 1983-03-17 Hoechst Ag, 6000 Frankfurt "kontinuierliches verfahren zur agglomerierung von ptee-pulvern im fluessigen medium und damit gewonnenes modifiziertes ptee-pulver"
EP0271243B1 (en) * 1986-11-21 1991-10-30 E.I. Du Pont De Nemours And Company Tetrafluoroethylene polymerization process
JPH075743B2 (ja) * 1986-12-22 1995-01-25 ダイキン工業株式会社 テトラフルオロエチレン系共重合体粉末およびその製造法
US5176958A (en) * 1987-06-24 1993-01-05 Daikin Industries Ltd. Modified polytetrafluoroethylene fine powder and process for preparing the same

Also Published As

Publication number Publication date
EP0644209B1 (de) 1996-06-26
JPH07165828A (ja) 1995-06-27
JP3640415B2 (ja) 2005-04-20
DE59400380D1 (de) 1996-08-01
US5641571A (en) 1997-06-24
EP0644209A1 (de) 1995-03-22
DE4331971A1 (de) 1995-03-23

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