DE69831676D1 - Verfahren zur herstellung von zerreibbaren produkten aus polytetrafluorethylen - Google Patents
Verfahren zur herstellung von zerreibbaren produkten aus polytetrafluorethylenInfo
- Publication number
- DE69831676D1 DE69831676D1 DE69831676T DE69831676T DE69831676D1 DE 69831676 D1 DE69831676 D1 DE 69831676D1 DE 69831676 T DE69831676 T DE 69831676T DE 69831676 T DE69831676 T DE 69831676T DE 69831676 D1 DE69831676 D1 DE 69831676D1
- Authority
- DE
- Germany
- Prior art keywords
- radiation
- polytetrafluoroethylene
- ptfe
- starting material
- source
- 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
Links
- 229920001343 polytetrafluoroethylene Polymers 0.000 title abstract 5
- 239000004810 polytetrafluoroethylene Substances 0.000 title abstract 5
- -1 POLYTETRAFLUOROETHYLENE Polymers 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title 1
- 230000005855 radiation Effects 0.000 abstract 4
- GUTLYIVDDKVIGB-OUBTZVSYSA-N Cobalt-60 Chemical compound [60Co] GUTLYIVDDKVIGB-OUBTZVSYSA-N 0.000 abstract 2
- 230000001678 irradiating effect Effects 0.000 abstract 2
- 239000007858 starting material Substances 0.000 abstract 2
- 238000010894 electron beam technology Methods 0.000 abstract 1
- 230000009969 flowable effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 239000000080 wetting agent Substances 0.000 abstract 1
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
- C08J3/28—Treatment by wave energy or particle radiation
-
- 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)
- Processes Of Treating Macromolecular Substances (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/908,576 US5891573A (en) | 1997-08-08 | 1997-08-08 | Method of providing friable polytetrafluoroethylene products |
US908576 | 1997-08-08 | ||
PCT/US1998/015869 WO1999007549A1 (en) | 1997-08-08 | 1998-07-30 | Method of providing friable polytetrafluoroethylene products |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69831676D1 true DE69831676D1 (de) | 2006-02-02 |
DE69831676T2 DE69831676T2 (de) | 2006-07-06 |
Family
ID=25425995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69831676T Expired - Lifetime DE69831676T2 (de) | 1997-08-08 | 1998-07-30 | Verfahren zur herstellung von zerreibbaren produkten aus polytetrafluorethylen |
Country Status (8)
Country | Link |
---|---|
US (1) | US5891573A (de) |
EP (1) | EP1001880B1 (de) |
JP (1) | JP4202595B2 (de) |
AT (1) | ATE304939T1 (de) |
AU (1) | AU738732B2 (de) |
CA (1) | CA2298839C (de) |
DE (1) | DE69831676T2 (de) |
WO (1) | WO1999007549A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003076734A (ja) * | 2001-09-03 | 2003-03-14 | Fujitsu Ltd | 集積回路設計装置及び集積回路設計方法並びにプログラム |
EP1487905A4 (de) * | 2002-03-14 | 2009-12-09 | Shamrock Tech Inc | Verfahren zur herstellung von submikronskaligem polytetrafluorethylenpulver und produkte daraus |
AU2003216264A1 (en) | 2002-04-23 | 2003-11-10 | Laurel Products, Llc | Method of treating fluoropolymer particles and the products thereof |
US6824872B2 (en) | 2002-04-23 | 2004-11-30 | Laurel Products Llc | Surface-treating fluoropolymer powders using atmospheric plasma |
AU2004207816B2 (en) * | 2003-01-27 | 2007-04-26 | Shamrock Technologies, Inc. | Method for producing submicron polytetrafluoroethylene powder and products thereof |
EP1605012A1 (de) * | 2004-06-10 | 2005-12-14 | SOLVAY (Société Anonyme) | Fluorpolymer-band, Fluorpolymer-band enthaltender Gegenstand und Verfahren zur Herstellung eines Fluorpolymer-bands |
JP4797347B2 (ja) * | 2004-08-25 | 2011-10-19 | 旭硝子株式会社 | 低分子量ポリテトラフルオロエチレン水性分散液の製造方法 |
JP5349028B2 (ja) * | 2008-12-05 | 2013-11-20 | 昂 宇田川 | 改質された四フッ化エチレン樹脂粉末の製造方法及び改質された四フッ化エチレン樹脂粉末 |
CN113563613A (zh) * | 2016-08-04 | 2021-10-29 | 大金工业株式会社 | 低分子量聚四氟乙烯的制造方法 |
WO2018026017A1 (ja) * | 2016-08-04 | 2018-02-08 | ダイキン工業株式会社 | 低分子量ポリテトラフルオロエチレンの製造方法、低分子量ポリテトラフルオロエチレン及び粉末 |
US11548989B2 (en) * | 2018-02-07 | 2023-01-10 | Daikin Industries, Ltd. | Method for producing composition containing low molecular weight polytetrafluoroethylene |
EP3822293A4 (de) * | 2018-07-13 | 2022-07-13 | Osaka University | Verfahren zur herstellung von polytetrafluorethylen mit niedrigem molekulargewicht |
EP4083077A4 (de) * | 2020-01-15 | 2024-02-14 | Daikin Industries, Ltd. | Verfahren zur herstellung von niedermolekularem polytetrafluorethylen, zusammensetzung und niedermolekulares polytetrafluorethylen |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2858442A (en) * | 1954-03-18 | 1958-10-28 | High Voltage Engineering Corp | Apparatus for increasing the uniformity of dose distribution produced by electron irradiation |
FR1437476A (fr) * | 1965-02-26 | 1966-05-06 | Saint Gobain Techn Nouvelles | Procédé et dispositif pour l'irradiation de fluides ou de produits granuleux ou pulvérulents par exposition à une source de rayonnements ionisants |
US3440466A (en) * | 1965-09-30 | 1969-04-22 | Ford Motor Co | Window support and heat sink for electron-discharge device |
FR2031747A5 (de) * | 1969-02-06 | 1970-11-20 | Commissariat Energie Atomique | |
US4029870A (en) * | 1970-02-03 | 1977-06-14 | Imperial Chemical Industries Limited | Tetrafluoroethylene polymers |
US4036718A (en) * | 1970-02-03 | 1977-07-19 | Imperial Chemical Industries Limited | Process for preparing a friable tetrafluoroethylene polymer powder from unsintered coagulated dispersion grade tetrafluoroethylene polymer |
US4052278A (en) * | 1970-02-03 | 1977-10-04 | Imperial Chemical Industries Limited | Finely divided, irradiated tetrafluorethylene polymers |
BE785797A (fr) * | 1971-07-02 | 1973-01-03 | Ici Ltd | Compositions de polymeres du tetrafluoroethylene |
US3838030A (en) * | 1971-11-30 | 1974-09-24 | Japan Atomic Energy Res Inst | Process for preparing of polytetrafluoroethylene resin wax |
US3766031A (en) * | 1972-04-10 | 1973-10-16 | Garlock Inc | Process for non-destructive radiation degradation of polytetrafluoroethylene |
US3780305A (en) * | 1972-11-09 | 1973-12-18 | Radiation Dev Co Ltd | Apparatus for treating wood chips with electrons |
DE2431522A1 (de) * | 1974-07-01 | 1976-01-22 | Kloeckner Humboldt Deutz Ag | Verfahren zur kontinuierlichen trocknung von nassen, koernigen und/oder stueckigen guetern und vorrichtung zur durchfuehrung des verfahrens |
US4110186A (en) * | 1975-05-13 | 1978-08-29 | Beatrice Foods Co. | Fluorinated ethylene-propylene copolymer powders having improved adhesion to substrates and method |
GB1516648A (en) * | 1975-06-26 | 1978-07-05 | Inst Khim Fiz An Sssr | Process for regenerating used polytetrafluoroethylene |
US4220511A (en) * | 1979-03-12 | 1980-09-02 | Radiation Dynamics, Inc. | Treatment of sintered poly-tetrafluoroethylene with irradiation and heat to produce a grindable material |
US4777192A (en) * | 1982-05-03 | 1988-10-11 | Shamrock Chemicals Corporation | Apparatus and method for radiation processing of materials |
US5576106A (en) * | 1994-07-28 | 1996-11-19 | E. I. Du Pont De Nemours And Company | Grafted fluoropolymer powders |
-
1997
- 1997-08-08 US US08/908,576 patent/US5891573A/en not_active Expired - Lifetime
-
1998
- 1998-07-30 WO PCT/US1998/015869 patent/WO1999007549A1/en active IP Right Grant
- 1998-07-30 CA CA002298839A patent/CA2298839C/en not_active Expired - Fee Related
- 1998-07-30 DE DE69831676T patent/DE69831676T2/de not_active Expired - Lifetime
- 1998-07-30 AU AU86742/98A patent/AU738732B2/en not_active Ceased
- 1998-07-30 EP EP98938152A patent/EP1001880B1/de not_active Expired - Lifetime
- 1998-07-30 AT AT98938152T patent/ATE304939T1/de not_active IP Right Cessation
- 1998-07-30 JP JP2000507108A patent/JP4202595B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
AU738732B2 (en) | 2001-09-27 |
ATE304939T1 (de) | 2005-10-15 |
JP4202595B2 (ja) | 2008-12-24 |
WO1999007549A1 (en) | 1999-02-18 |
JP2001513579A (ja) | 2001-09-04 |
US5891573A (en) | 1999-04-06 |
DE69831676T2 (de) | 2006-07-06 |
EP1001880B1 (de) | 2005-09-21 |
EP1001880A4 (de) | 2002-05-02 |
CA2298839C (en) | 2007-10-23 |
CA2298839A1 (en) | 1999-02-18 |
AU8674298A (en) | 1999-03-01 |
EP1001880A1 (de) | 2000-05-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |