DE3071646D1 - Treatment of sintered polytetrafluoroethylene with irradiation and heat to produce a grindable material - Google Patents
Treatment of sintered polytetrafluoroethylene with irradiation and heat to produce a grindable materialInfo
- Publication number
- DE3071646D1 DE3071646D1 DE8080300689T DE3071646T DE3071646D1 DE 3071646 D1 DE3071646 D1 DE 3071646D1 DE 8080300689 T DE8080300689 T DE 8080300689T DE 3071646 T DE3071646 T DE 3071646T DE 3071646 D1 DE3071646 D1 DE 3071646D1
- Authority
- DE
- Germany
- Prior art keywords
- irradiation
- produce
- treatment
- heat
- sintered polytetrafluoroethylene
- 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
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
- C08J3/28—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
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
-
- 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
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
-
- 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
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/3154—Of fluorinated addition polymer from unsaturated monomers
- Y10T428/31544—Addition polymer is perhalogenated
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/019,890 US4220511A (en) | 1979-03-12 | 1979-03-12 | Treatment of sintered poly-tetrafluoroethylene with irradiation and heat to produce a grindable material |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3071646D1 true DE3071646D1 (en) | 1986-07-24 |
Family
ID=21795591
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8080300689T Expired DE3071646D1 (en) | 1979-03-12 | 1980-03-06 | Treatment of sintered polytetrafluoroethylene with irradiation and heat to produce a grindable material |
Country Status (8)
Country | Link |
---|---|
US (1) | US4220511A (de) |
EP (1) | EP0017349B1 (de) |
JP (1) | JPS55124612A (de) |
BR (1) | BR8001476A (de) |
CA (1) | CA1125699A (de) |
DE (1) | DE3071646D1 (de) |
DK (1) | DK104080A (de) |
ZA (1) | ZA801392B (de) |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4451593A (en) * | 1981-03-31 | 1984-05-29 | Union Carbide Corporation | Process for finishing resin using reduced energy input |
GB2119385B (en) * | 1982-05-03 | 1985-12-18 | Shamrock Chemicals Corp | Apparatus and method for radiation processing of materials |
US4777192A (en) * | 1982-05-03 | 1988-10-11 | Shamrock Chemicals Corporation | Apparatus and method for radiation processing of materials |
US4748005A (en) * | 1982-05-03 | 1988-05-31 | Shamrock Chemicals Corporation | Apparatus and method for radiation processing of materials |
US4675380A (en) * | 1985-10-25 | 1987-06-23 | E. I. Du Pont De Nemours And Company | Melt-processible tetrafluoroethylene/perfluoroolefin copolymer granules and processes for preparing them |
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 |
US4861408A (en) * | 1987-04-08 | 1989-08-29 | The United States Of America As Represented By The United States Department Of Energy | Modification of polymeric surface for improved adhesion via electron beam exposure |
US5296113A (en) * | 1990-02-26 | 1994-03-22 | Luniewski Robert S | Irradiation device for fluoropolymers |
US6228428B1 (en) | 1991-10-28 | 2001-05-08 | The Gillette Company | Coating cutting edges with fluorocarbon polymers |
GB9122800D0 (en) * | 1991-10-28 | 1991-12-11 | Gillette Co | Coating cutting edges with fluorocarbon polymers |
US5263256A (en) * | 1992-04-17 | 1993-11-23 | The Gillette Company | Method of treating razor blade cutting edges |
JP3317452B2 (ja) * | 1992-10-05 | 2002-08-26 | 株式会社レイテック | 改質ポリテトラフルオロエチレンとその製造方法 |
GB9311034D0 (en) * | 1993-05-28 | 1993-07-14 | Gillette Co | Method of coating cutting edges |
US5891573A (en) * | 1997-08-08 | 1999-04-06 | Shamrock Chemicals Corporation | Method of providing friable polytetrafluoroethylene products |
DE19748159A1 (de) * | 1997-10-31 | 1999-05-06 | Herberts & Co Gmbh | Verfahren zur Aufbereitung von Pulverlackabfällen und die erhaltenen Pulverlacke |
US5968997A (en) * | 1998-12-09 | 1999-10-19 | Shamrock Technologies, Inc. | Continuous process for irradiating of polytetrafluorineethylene (PTFE) |
US6486481B1 (en) | 1999-11-12 | 2002-11-26 | Ausimont Usa, Inc. | Vibratory table apparatus and associated equipment and methods for radiation treatment of polymeric materials |
US6340718B1 (en) | 2000-07-24 | 2002-01-22 | Steris Inc | Method of radiation treatment for fluoropolymer materials |
JP2002256080A (ja) * | 2001-02-28 | 2002-09-11 | Japan Atom Energy Res Inst | 放射線改質四フッ化エチレン樹脂原料及びその製造方法 |
EP1487905A4 (de) * | 2002-03-14 | 2009-12-09 | Shamrock Tech Inc | Verfahren zur herstellung von submikronskaligem polytetrafluorethylenpulver und produkte daraus |
US7067616B2 (en) * | 2003-06-26 | 2006-06-27 | Advanced Technology Materials, Inc. | Polytetrafluoroethylene treatment |
DE10351813B4 (de) * | 2003-10-30 | 2006-04-13 | Leibniz-Institut Für Polymerforschung Dresden E.V. | Radikalisch gekoppelte PTFE-Polymer-Pulver und Verfahren zu ihrer Herstellung |
DE10351812B4 (de) * | 2003-10-30 | 2006-04-20 | Leibniz-Institut Für Polymerforschung Dresden E.V. | Modifizierte Perfluor-Kunststoffe und Verfahren zu ihrer Herstellung |
DE10351814A1 (de) * | 2003-10-30 | 2005-06-16 | Institut Für Polymerforschung Dresden E.V. | Radikalisch gekoppelte PTFE-Polymer-Compounds und Verfahren zu ihrer Herstellung |
GB0524196D0 (en) * | 2005-11-28 | 2006-01-04 | Cleansorb Ltd | Comminutable polyesters |
DE102014222283A1 (de) * | 2014-10-31 | 2016-05-04 | Aktiebolaget Skf | Kunststoffaufweisender selbstschmierender Lagerkäfig |
US10703867B2 (en) | 2016-06-10 | 2020-07-07 | E-Beam Services, Inc. | Thermal treatment of irradiated material solids using a heat transfer liquid |
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 |
US10648496B2 (en) | 2017-06-28 | 2020-05-12 | Blanking Systems, Inc. | Mount |
WO2019156071A1 (ja) | 2018-02-07 | 2019-08-15 | 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を含む組成物の製造方法 |
US11548989B2 (en) * | 2018-02-07 | 2023-01-10 | Daikin Industries, Ltd. | Method for producing composition containing low molecular weight polytetrafluoroethylene |
WO2021053628A1 (en) * | 2019-09-19 | 2021-03-25 | Gujarat Fluorochemicals Limited | An extrusion process for preparing a low molecular weight polytetrafluoroethylene micropowder |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4052278A (en) * | 1970-02-03 | 1977-10-04 | Imperial Chemical Industries Limited | Finely divided, irradiated tetrafluorethylene 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 |
US4029870A (en) * | 1970-02-03 | 1977-06-14 | Imperial Chemical Industries Limited | Tetrafluoroethylene polymers |
BE785797A (fr) * | 1971-07-02 | 1973-01-03 | Ici Ltd | Compositions de polymeres du tetrafluoroethylene |
US3766031A (en) * | 1972-04-10 | 1973-10-16 | Garlock Inc | Process for non-destructive radiation degradation of polytetrafluoroethylene |
JPS5225858B2 (de) * | 1972-06-22 | 1977-07-11 |
-
1979
- 1979-03-12 US US06/019,890 patent/US4220511A/en not_active Expired - Lifetime
-
1980
- 1980-03-03 CA CA346,865A patent/CA1125699A/en not_active Expired
- 1980-03-06 DE DE8080300689T patent/DE3071646D1/de not_active Expired
- 1980-03-06 EP EP19800300689 patent/EP0017349B1/de not_active Expired
- 1980-03-10 ZA ZA00801392A patent/ZA801392B/xx unknown
- 1980-03-11 DK DK104080A patent/DK104080A/da not_active Application Discontinuation
- 1980-03-12 JP JP3150680A patent/JPS55124612A/ja active Pending
- 1980-03-12 BR BR8001476A patent/BR8001476A/pt unknown
Also Published As
Publication number | Publication date |
---|---|
JPS55124612A (en) | 1980-09-25 |
EP0017349A1 (de) | 1980-10-15 |
EP0017349B1 (de) | 1986-06-18 |
DK104080A (da) | 1980-09-13 |
ZA801392B (en) | 1981-03-25 |
US4220511A (en) | 1980-09-02 |
CA1125699A (en) | 1982-06-15 |
BR8001476A (pt) | 1980-11-11 |
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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 |