CA2193607C - Non-free flowable molding powders of modified polytetrafluoroethylenes - Google Patents

Non-free flowable molding powders of modified polytetrafluoroethylenes Download PDF

Info

Publication number
CA2193607C
CA2193607C CA002193607A CA2193607A CA2193607C CA 2193607 C CA2193607 C CA 2193607C CA 002193607 A CA002193607 A CA 002193607A CA 2193607 A CA2193607 A CA 2193607A CA 2193607 C CA2193607 C CA 2193607C
Authority
CA
Canada
Prior art keywords
molding powder
molding
free
powder
ether
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 - Fee Related
Application number
CA002193607A
Other languages
English (en)
French (fr)
Other versions
CA2193607A1 (en
Inventor
Gernot Lohr
Klaus Hintzer
Reinhard Albert Sulzbach
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.)
Dyneon GmbH
Original Assignee
Dyneon GmbH
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 Dyneon GmbH filed Critical Dyneon GmbH
Publication of CA2193607A1 publication Critical patent/CA2193607A1/en
Application granted granted Critical
Publication of CA2193607C publication Critical patent/CA2193607C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • C08J3/16—Powdering or granulating by coagulating dispersions
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/251—Particles, powder or granules
    • 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)
  • Dispersion Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Polymerisation Methods In General (AREA)
  • Materials For Medical Uses (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
CA002193607A 1995-12-21 1996-12-20 Non-free flowable molding powders of modified polytetrafluoroethylenes Expired - Fee Related CA2193607C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19547907.6 1995-12-21
DE19547907A DE19547907A1 (de) 1995-12-21 1995-12-21 Nichtrieselfähige Formpulver aus modifizierten Polytetrafluorethylenen

Publications (2)

Publication Number Publication Date
CA2193607A1 CA2193607A1 (en) 1997-06-22
CA2193607C true CA2193607C (en) 2005-05-03

Family

ID=7780863

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002193607A Expired - Fee Related CA2193607C (en) 1995-12-21 1996-12-20 Non-free flowable molding powders of modified polytetrafluoroethylenes

Country Status (11)

Country Link
US (2) US6489419B1 (enExample)
EP (1) EP0784069B1 (enExample)
JP (1) JPH09202815A (enExample)
CN (1) CN1074775C (enExample)
AT (1) ATE247145T1 (enExample)
AU (1) AU7547596A (enExample)
CA (1) CA2193607C (enExample)
DE (2) DE19547907A1 (enExample)
NO (1) NO965499L (enExample)
RU (1) RU2179562C2 (enExample)
TR (1) TR199601033A2 (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3666210B2 (ja) * 1997-07-24 2005-06-29 旭硝子株式会社 ポリテトラフルオロエチレン造粒粉末の製造法
US6911489B2 (en) * 2002-06-10 2005-06-28 Asahi Glass Fluoropolymers Usa, Inc. Methods for preparing agglomerated pellets of polytetrafluoroethylene and molded articles and the agglomerated pellets of polytetrafluoroethylene and molded articles prepared thereby
US20040040473A1 (en) * 2002-09-03 2004-03-04 Jose Walter Compositions for use in making models
KR101231504B1 (ko) * 2005-03-07 2013-02-07 아사히 가라스 가부시키가이샤 충전재가 들어간 폴리테트라플루오로에틸렌 조립물의 제조방법
US8637144B2 (en) * 2007-10-04 2014-01-28 W. L. Gore & Associates, Inc. Expandable TFE copolymers, method of making, and porous, expended articles thereof
CN104968687A (zh) * 2013-02-05 2015-10-07 旭硝子株式会社 聚四氟乙烯模塑粉的制造方法及聚四氟乙烯造粒物的制造方法
CN105061660B (zh) * 2015-08-05 2018-08-24 上海三爱富新材料科技有限公司 可熔性聚四氟乙烯的制造方法

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3366615A (en) 1964-09-16 1968-01-30 Allied Chem Method for agglomerating granular polytetrafluoroethylene
GB1116210A (en) * 1966-05-25 1968-06-06 Du Pont Granular tetrafluoroethylene copolymer molding powders
US3690569A (en) * 1970-09-24 1972-09-12 Du Pont Granular polytetrafluoroethylene of good moldability and apparent bulk density
JPS5032098B2 (enExample) * 1972-08-09 1975-10-17
US3855191A (en) * 1973-04-04 1974-12-17 Du Pont Polytetrafluoroethylene molding powders of tetrafluoroethylene and perfluoro (alkyl vinyl ether) copolymer
US4143110A (en) * 1977-07-08 1979-03-06 Asahi Glass Company Ltd. Method of agglomerating polytetrafluoroethylene powder
DE2744244C3 (de) * 1977-10-01 1981-01-08 Hoechst Ag, 6000 Frankfurt Thermisch vorbehandeltes, aus der Schmelze nicht verarbeitbares, mit einem perfluorierten Monomeren modifiziertes Tetrafluoräthylen-Polymerisatpulver und Verfahren zur Herstellung von Pulvern von aus der Schmelze nicht verarbeitbaren Tetrafluoräthylen-Polymerisaten mit hohem Schüttgewicht und guter Rieselfähigkeit
US4241137A (en) * 1977-11-22 1980-12-23 Daikin Kogyo Co., Ltd. Process for preparing polytetrafluoroethylene granular powder
DE3110193A1 (de) * 1980-06-06 1982-09-30 Hoechst Ag, 6000 Frankfurt "verbessertes verfahren zur herstellung von modifiziertem tetrafluorethylen-polymerisatpulver mit hohem schuettgewicht und guter rieselfaehigkeit"
JPS6021694B2 (ja) * 1980-07-08 1985-05-29 ダイキン工業株式会社 フイラ−入りポリテトラフルオロエチレン成形粉末の製造方法
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"
US4714756A (en) * 1985-10-23 1987-12-22 E. I. Du Pont De Nemours And Company Process for preparing melt processible tetrafluoroethylene copolymer granules
US4948844A (en) * 1988-04-16 1990-08-14 Tokuyama Soda Kabushiki Kaisha Process for preparation of perfluorinated copolymer
DK161743C (da) * 1989-07-03 1992-02-17 Niro Atomizer As Fremgangsmaade og apparat til agglomerering af et pulverformigt materiale
JPH03259926A (ja) * 1990-03-08 1991-11-20 Daikin Ind Ltd ポリテトラフルオロエチレン粒状粉末の製法
US5182119A (en) * 1991-04-18 1993-01-26 Ici Americas, Inc. Apparatus for production of free flowing polytetrafluoroethylene (PTFE) molding pellets
DE4308368C2 (de) * 1993-03-16 1997-05-22 Gore & Ass Poröses Polytetrafluorethylen (PTFE) sowie ein Verfahren zu seiner Herstellung
DE4335705A1 (de) * 1993-10-20 1995-04-27 Hoechst Ag Herstellung eines modifizierten Polytetrafluorethylens und seine Verwendung

Also Published As

Publication number Publication date
CN1163281A (zh) 1997-10-29
NO965499L (no) 1997-06-23
ATE247145T1 (de) 2003-08-15
AU7547596A (en) 1997-06-26
TR199601033A2 (tr) 1997-07-21
DE59610657D1 (de) 2003-09-18
EP0784069A2 (de) 1997-07-16
DE19547907A1 (de) 1997-06-26
JPH09202815A (ja) 1997-08-05
CN1074775C (zh) 2001-11-14
EP0784069B1 (de) 2003-08-13
CA2193607A1 (en) 1997-06-22
NO965499D0 (no) 1996-12-20
US6099774A (en) 2000-08-08
EP0784069A3 (de) 1998-01-07
RU2179562C2 (ru) 2002-02-20
US6489419B1 (en) 2002-12-03

Similar Documents

Publication Publication Date Title
CA1184728A (en) Continuous process for the agglomeration of ptfe powders in a liquid medium, and modified ptfe powder obtained thereby
US3766133A (en) Polytetrafluoroethylene filled and unfilled molding powders and theirpreparation
EP0844271A1 (en) Process for producing granular powder of modified polytetrafluoroethylene
CA2193607C (en) Non-free flowable molding powders of modified polytetrafluoroethylenes
US5216068A (en) Process for producing an agglomerated molding powder composed of polytetrafluoroethylene and hydrophobic fillers
HUT69293A (en) Drag reducing matters for flowing hydrocarbons
US4123606A (en) Deagglomeration process
US20080009577A1 (en) Process for producing filler-containing polytetrafluoroethylene granules
US3980612A (en) Process for reducing filler loss during polytetrafluoroethylene agglomeration
US4241137A (en) Process for preparing polytetrafluoroethylene granular powder
EP1241223B1 (en) Resin particles for molding and process for producing the same
RU2618222C2 (ru) Способ получения формовочного порошка политетрафторэтилена и способ получения агломерированного продукта из политетрафторэтилена
RU2182159C2 (ru) Гранулированный порошок из модифицированного политетрафторэтилена и его варианты, формованное изделие и срезанная пластина на его основе
US5589531A (en) Preparation and use of pelletized submicron pigment powder/polymer compositions
JP3347823B2 (ja) ポリテトラフルオロエチレン造粒物
EP0445748A2 (en) Process for preparing polytetrafluoro-ethylene granular powder
US3980596A (en) Process for reducing filler loss
EP0980886B1 (en) Filled granular polytetrafluoroethylene powder and process for the production thereof
EP1213321B1 (en) Polytetrafluoroethylene agglomerated product and its molded product
MXPA97000101A (en) Powders for molding not freely fluent from polyethylfluoroethylene modifies
US3366615A (en) Method for agglomerating granular polytetrafluoroethylene
Brink et al. Sintering high performance semicrystalline polymeric powders
JP2002201287A (ja) 充填材入りポリテトラフルオロエチレン成形用粉末の製造方法
CA1071369A (en) Polytetrafluoroethylene molding powder
GB2055874A (en) Process for the fabrication of coagulated dispersion polytetrafluoroethylene resins

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20081222