JPH0118088B2 - - Google Patents

Info

Publication number
JPH0118088B2
JPH0118088B2 JP53119929A JP11992978A JPH0118088B2 JP H0118088 B2 JPH0118088 B2 JP H0118088B2 JP 53119929 A JP53119929 A JP 53119929A JP 11992978 A JP11992978 A JP 11992978A JP H0118088 B2 JPH0118088 B2 JP H0118088B2
Authority
JP
Japan
Prior art keywords
powder
tetrafluoroethylene
polytetrafluoroethylene
bulk density
powders
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
Application number
JP53119929A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5458746A (en
Inventor
Aruberuto Zurutsubatsuha Rainharuto
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
Publication of JPS5458746A publication Critical patent/JPS5458746A/ja
Publication of JPH0118088B2 publication Critical patent/JPH0118088B2/ja
Granted 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
    • 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
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
    • 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
    • C08F6/00—Post-polymerisation treatments
    • C08F6/06—Treatment of polymer solutions
    • C08F6/10—Removal of volatile materials, e.g. solvents
    • 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)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (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)
JP11992978A 1977-10-01 1978-09-30 After treatment of preparatively heat treated tetrafluoroethylene polymer and polymer powder thereby obtained Granted JPS5458746A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2744244A DE2744244C3 (de) 1977-10-01 1977-10-01 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

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP63223670A Division JPH01118408A (ja) 1977-10-01 1988-09-08 熱的に予備処理されたテトラフルオルエチレン重合体の後処理法

Publications (2)

Publication Number Publication Date
JPS5458746A JPS5458746A (en) 1979-05-11
JPH0118088B2 true JPH0118088B2 (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html) 1989-04-04

Family

ID=6020418

Family Applications (2)

Application Number Title Priority Date Filing Date
JP11992978A Granted JPS5458746A (en) 1977-10-01 1978-09-30 After treatment of preparatively heat treated tetrafluoroethylene polymer and polymer powder thereby obtained
JP63223670A Granted JPH01118408A (ja) 1977-10-01 1988-09-08 熱的に予備処理されたテトラフルオルエチレン重合体の後処理法

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP63223670A Granted JPH01118408A (ja) 1977-10-01 1988-09-08 熱的に予備処理されたテトラフルオルエチレン重合体の後処理法

Country Status (7)

Country Link
US (1) US4216265A (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)
EP (1) EP0001420B1 (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)
JP (2) JPS5458746A (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)
CA (1) CA1142696A (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)
DE (2) DE2744244C3 (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)
IN (1) IN150977B (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)
IT (1) IT1099669B (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996028498A1 (en) * 1995-03-15 1996-09-19 Daikin Industries, Ltd. Process for producing polytetrafluoroethylene molding powder

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2949908A1 (de) * 1979-12-12 1981-06-19 Hoechst Ag, 6230 Frankfurt Rieselfaehige sinterpulver mit verbesserten eigenschaften auf basis von tetrafluorethylen-polymeren und verfahren zu deren herstellung
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"
US4407988A (en) * 1980-08-27 1983-10-04 Millipore Corporation Method for preparing a wear-resistant composition containing fluorinated graphite, graphite fibers and PTFE
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"
JPS62260849A (ja) * 1986-04-11 1987-11-13 Daikin Ind Ltd 熱溶融性フツ素樹脂の顆粒状粉末およびその製造法
US5560986A (en) * 1990-04-27 1996-10-01 W. L. Gore & Associates, Inc. Porous polytetrafluoroethylene sheet composition
DE19547907A1 (de) * 1995-12-21 1997-06-26 Dyneon Gmbh Nichtrieselfähige Formpulver aus modifizierten Polytetrafluorethylenen
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
EP2752440B1 (en) * 2011-08-29 2018-10-24 Daikin Industries, Ltd. Fluorine-containing polymer powder, film, and method for producing fluorine-containing polymer powder
EP2810958B1 (en) * 2012-02-02 2016-11-30 Asahi Glass Company, Limited Method for producing polytetrafluoroethylene fine powder
CN109705239B (zh) * 2018-12-19 2021-07-23 福建三农新材料有限责任公司 一种聚四氟乙烯分散树脂的连续后处理系统及方法
CN115850889B (zh) * 2022-12-29 2023-07-25 深圳市富程威科技股份有限公司 一种微孔薄膜及其制备方法和应用

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2400091A (en) * 1944-09-20 1946-05-14 Du Pont Molding process
US2989777A (en) * 1957-06-04 1961-06-27 Surf Chemical Inc Dry powder extruding apparatus and methods for producing polytetrafluoroethylene articles
US3087921A (en) * 1958-09-02 1963-04-30 Du Pont Polytetrafluoroethylene molding powder
US3152201A (en) * 1961-01-03 1964-10-06 Du Pont Manufacture of polytetrafluoroethylene powders
US3640984A (en) * 1963-11-04 1972-02-08 Allied Chem Polytetrafluoroethylene
US3331825A (en) * 1963-11-05 1967-07-18 Thiokol Chemical Corp Polytetrafluoroethylene molding powders
US3527857A (en) * 1965-10-26 1970-09-08 Hoechst Ag Process for preparing polytetrafluoroethylene-containing powder
US3419522A (en) * 1965-11-22 1968-12-31 Du Pont Nongraying, nonyellowing polytetrafluoroethylene molding powder
DE1679830C3 (de) * 1965-12-30 1974-01-10 Farbwerke Hoechst Ag, Vormals Meister Lucius & Bruening, 6000 Frankfurt Verfahren zur Herstellung eines Granulats aus pulvrigem Polytetrafluoräthylen
US3528955A (en) * 1967-05-16 1970-09-15 Liquid Nitrogen Processing Polytetrafluoroethylene molding powder and process of preparing the same
DE2063635C3 (de) * 1970-12-30 1980-01-03 Daikin Kogyo Co. Ltd., Tokio Verfahren zur Herstellung eines nicht faserigen ultrafeinen Polytetrafluoräthylen-Formpulvers
JPS5032098B2 (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html) * 1972-08-09 1975-10-17
JPS5625446B2 (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html) * 1972-08-21 1981-06-12

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996028498A1 (en) * 1995-03-15 1996-09-19 Daikin Industries, Ltd. Process for producing polytetrafluoroethylene molding powder
US6054083A (en) * 1995-03-15 2000-04-25 Daikin Industries, Ltd. Process for preparation of polytetrafluoroethylene molding powder

Also Published As

Publication number Publication date
JPH0260683B2 (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html) 1990-12-18
DE2744244B2 (de) 1980-05-14
IT7828280A0 (it) 1978-09-29
JPS5458746A (en) 1979-05-11
IT1099669B (it) 1985-09-28
CA1142696A (en) 1983-03-08
DE2744244A1 (de) 1979-04-05
DE2860805D1 (en) 1981-10-01
EP0001420B1 (de) 1981-06-24
JPH01118408A (ja) 1989-05-10
EP0001420A1 (de) 1979-04-18
DE2744244C3 (de) 1981-01-08
IN150977B (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html) 1983-02-05
US4216265A (en) 1980-08-05

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