DE69019768T2 - Verfahren zur kontinuierlichen Herstellung von feuchtem Polytetrafluoroethylen-Pulver. - Google Patents

Verfahren zur kontinuierlichen Herstellung von feuchtem Polytetrafluoroethylen-Pulver.

Info

Publication number
DE69019768T2
DE69019768T2 DE69019768T DE69019768T DE69019768T2 DE 69019768 T2 DE69019768 T2 DE 69019768T2 DE 69019768 T DE69019768 T DE 69019768T DE 69019768 T DE69019768 T DE 69019768T DE 69019768 T2 DE69019768 T2 DE 69019768T2
Authority
DE
Germany
Prior art keywords
moist
continuous production
polytetrafluoroethylene powder
polytetrafluoroethylene
powder
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
DE69019768T
Other languages
English (en)
Other versions
DE69019768D1 (de
Inventor
Tetsuya Higuchi
Shunichi Nomura
Shigeru Ichiba
Hiroshi Yamaguchi
Masaomi Goromaru
Akira Watanabe
Kazuhiro Takeda
Mikio Morita
Kazuhisa Fujita
Yasuyuki Moriyama
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Application granted granted Critical
Publication of DE69019768D1 publication Critical patent/DE69019768D1/de
Publication of DE69019768T2 publication Critical patent/DE69019768T2/de
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
    • C08J3/16—Powdering or granulating by coagulating dispersions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
DE69019768T 1989-03-14 1990-03-09 Verfahren zur kontinuierlichen Herstellung von feuchtem Polytetrafluoroethylen-Pulver. Expired - Fee Related DE69019768T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1061866A JP2701434B2 (ja) 1989-03-14 1989-03-14 ポリテトラフルオロエチレンの湿潤パウダーの連続製造法

Publications (2)

Publication Number Publication Date
DE69019768D1 DE69019768D1 (de) 1995-07-06
DE69019768T2 true DE69019768T2 (de) 1995-12-21

Family

ID=13183473

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69019768T Expired - Fee Related DE69019768T2 (de) 1989-03-14 1990-03-09 Verfahren zur kontinuierlichen Herstellung von feuchtem Polytetrafluoroethylen-Pulver.

Country Status (5)

Country Link
US (1) US5747640A (de)
EP (1) EP0387711B1 (de)
JP (1) JP2701434B2 (de)
CN (1) CN1041182C (de)
DE (1) DE69019768T2 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3000609B2 (ja) * 1990-03-08 2000-01-17 ダイキン工業株式会社 ポリテトラフルオロエチレン粒状粉末の製法
JPH0952955A (ja) * 1995-08-11 1997-02-25 Daikin Ind Ltd 変性ポリテトラフルオロエチレン粒状粉末の製法
CN1062571C (zh) * 1996-05-15 2001-02-28 梁主宇 压制用聚四氟乙烯、聚全氟乙丙烯和聚苯硫醚共混改性聚四氟乙烯纤维复合材料造粒工艺方法
US6036945A (en) 1997-04-11 2000-03-14 Shamrock Technologies, Inc. Delivery systems for active ingredients including sunscreen actives and methods of making same
ITMI20011613A1 (it) * 2001-07-26 2003-01-26 Ausimont Spa Processo di coagulazione di polveri fini di ptfe
JP2003286445A (ja) * 2002-03-28 2003-10-10 Kansai Paint Co Ltd 熱硬化型粉体水分散液塗料組成物の製造方法
EP1831288B1 (de) * 2004-12-30 2012-06-27 3M Innovative Properties Company Fluorpolymernanopartikel-beschichtungszusammensetzung
EP2623543B1 (de) * 2010-09-30 2020-01-01 Daikin Industries, Ltd. Verfahren zur herstellung eines feinen polytetrafluorethylenpulvers
JP5858043B2 (ja) * 2011-07-19 2016-02-10 旭硝子株式会社 エチレン−テトラフルオロエチレン共重合体の粉体の製造方法
CN104149219B (zh) * 2014-07-31 2017-04-26 中国科学院重庆绿色智能技术研究院 一体化粉体球化及分级方法
CN104437805B (zh) * 2014-12-02 2017-02-01 中昊晨光化工研究院有限公司 一种悬浮法聚四氟乙烯树脂的粉碎设备和粉碎方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3046263A (en) * 1959-07-10 1962-07-24 Du Pont Coagulation of colloidal polytetrafluoroethylene dispersions
GB1033638A (en) * 1963-09-09 1966-06-22 Du Pont Polytetrafluoroethylene moulding powders and their preparation
DD96074A1 (de) * 1972-04-14 1973-03-12
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"
EP0187972B1 (de) * 1984-12-17 1990-10-17 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Verfahren zur Entfernung einer organischen Verbindung mit hohem Siedepunkt

Also Published As

Publication number Publication date
US5747640A (en) 1998-05-05
JP2701434B2 (ja) 1998-01-21
EP0387711B1 (de) 1995-05-31
DE69019768D1 (de) 1995-07-06
CN1041182C (zh) 1998-12-16
CN1045589A (zh) 1990-09-26
JPH02239911A (ja) 1990-09-21
EP0387711A2 (de) 1990-09-19
EP0387711A3 (de) 1992-05-20

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee