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GB1516648A - Process for regenerating used polytetrafluoroethylene - Google Patents

Process for regenerating used polytetrafluoroethylene

Info

Publication number
GB1516648A
GB1516648A GB2712575A GB2712575A GB1516648A GB 1516648 A GB1516648 A GB 1516648A GB 2712575 A GB2712575 A GB 2712575A GB 2712575 A GB2712575 A GB 2712575A GB 1516648 A GB1516648 A GB 1516648A
Authority
GB
United Kingdom
Prior art keywords
polytetrafluoroethylene
mixture
ethylene
hexafluoropropene
tetrafluoroethylene
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
GB2712575A
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.)
INST KHIM FIZ AN SSSR
Original Assignee
INST KHIM FIZ AN SSSR
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 INST KHIM FIZ AN SSSR filed Critical INST KHIM FIZ AN SSSR
Priority to GB2712575A priority Critical patent/GB1516648A/en
Publication of GB1516648A publication Critical patent/GB1516648A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08F259/00—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00
    • C08F259/08—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00 on to polymers containing fluorine

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

1516648 Polymerizing monomers on used polytetrafluoro ethylene INST KHIMICHE FIZIKI AKAD NAUK SSSR 26 June 1975 27125/75 Headings C3L and C3P Used polytetrafluoroethylene is regenerated by subjecting used particulate polytetrafluorethylene of particle-size not greater than 100 microns to ionizing radiation before or during contacting of the polytetrafluoroethylene with a monomer of formula C2FxR4-x wherein x = 1 to 4, R is -H, -CF3, Cl, C6H5 or C6F5. Examples are given in which (a) polytetrafluoroethylene is treated with tetrafluoroethylene using gamma radiation, accelerated electrons or plasma treatment; (b) polytetrafluoroethylene is grafted with trifluorochloroethylenes, vinylidene fluoride, or vinyl fluoride or a mixture of tetrafluoroethylene with hexafluoropropene ethylene or perfluorostyrene, or a mixture of vinylidene fluoride with ethylene, or a mixture of trifluorochloroethylene with hexafluoropropene, using gamma radiation.
GB2712575A 1975-06-26 1975-06-26 Process for regenerating used polytetrafluoroethylene Expired GB1516648A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2712575A GB1516648A (en) 1975-06-26 1975-06-26 Process for regenerating used polytetrafluoroethylene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2712575A GB1516648A (en) 1975-06-26 1975-06-26 Process for regenerating used polytetrafluoroethylene

Publications (1)

Publication Number Publication Date
GB1516648A true GB1516648A (en) 1978-07-05

Family

ID=10254634

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2712575A Expired GB1516648A (en) 1975-06-26 1975-06-26 Process for regenerating used polytetrafluoroethylene

Country Status (1)

Country Link
GB (1) GB1516648A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119385A (en) * 1982-05-03 1983-11-16 Shamrock Chemicals Corp 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
US4777192A (en) * 1982-05-03 1988-10-11 Shamrock Chemicals Corporation Apparatus and method for radiation processing of materials
US5891573A (en) * 1997-08-08 1999-04-06 Shamrock Chemicals Corporation Method of providing friable polytetrafluoroethylene products
CN1123585C (en) * 1994-07-28 2003-10-08 纳幕尔杜邦公司 Grafted fluoropolymer powders
WO2005042596A1 (en) * 2003-10-30 2005-05-12 Leibniz-Institut Für Polymerforschung Dresden E.V. Radically coupled ptfe polymer powders, and method for the production thereof
US6919015B2 (en) 2002-12-16 2005-07-19 3M Innovative Properties Company Process for manufacturing fluoroolefins
US7759441B2 (en) 2003-10-30 2010-07-20 Leibniz-Institut Fuer Polymerforschung Dresden E.V. Radically coupled PTFE polymer compounds and method for the production thereof
JP2017160330A (en) * 2016-03-09 2017-09-14 ダイキン工業株式会社 Manufacturing method of molded body
CN110248973A (en) * 2017-01-27 2019-09-17 国立大学法人大阪大学 The manufacturing method of molding material and the resin-formed body using the molding material
CN119708730A (en) * 2025-02-27 2025-03-28 浙江有氟密阀门有限公司 Modified polytetrafluoroethylene pipe and preparation method thereof

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4748005A (en) * 1982-05-03 1988-05-31 Shamrock Chemicals Corporation 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
GB2119385A (en) * 1982-05-03 1983-11-16 Shamrock Chemicals Corp Apparatus and method for radiation processing of materials
CN1123585C (en) * 1994-07-28 2003-10-08 纳幕尔杜邦公司 Grafted fluoropolymer powders
US5891573A (en) * 1997-08-08 1999-04-06 Shamrock Chemicals Corporation Method of providing friable polytetrafluoroethylene products
EP1001880A4 (en) * 1997-08-08 2002-05-02 Shamrock Tech Inc Method of providing friable polytetrafluoroethylene products
US7250540B2 (en) 2002-12-16 2007-07-31 3M Innovative Properties Company Process for manufacturing fluoroolefins
US6919015B2 (en) 2002-12-16 2005-07-19 3M Innovative Properties Company Process for manufacturing fluoroolefins
US7790780B2 (en) 2003-10-30 2010-09-07 Leibniz-Institut Fuer Polymerforschung Dresden E.V. Radically coupled PTFE polymer powders, and method for the production thereof
US7759441B2 (en) 2003-10-30 2010-07-20 Leibniz-Institut Fuer Polymerforschung Dresden E.V. Radically coupled PTFE polymer compounds and method for the production thereof
WO2005042596A1 (en) * 2003-10-30 2005-05-12 Leibniz-Institut Für Polymerforschung Dresden E.V. Radically coupled ptfe polymer powders, and method for the production thereof
US8030367B2 (en) 2003-10-30 2011-10-04 Leibniz-Institut Fuer Polymerforschung Dresden E.V. Radically coupled PTFE polymer powder and method for the production thereof
US8648149B2 (en) 2003-10-30 2014-02-11 Leibniz-Institut Fuer Polymerforschung Dresden E.V. Radically coupled PTFE polymer compounds and method for the production thereof
US11225557B2 (en) 2016-03-09 2022-01-18 Daikin Industries, Ltd. Method for producing molded article
CN108779258A (en) * 2016-03-09 2018-11-09 大金工业株式会社 The manufacturing method of formed body
EP3428218A4 (en) * 2016-03-09 2019-11-13 Daikin Industries, Ltd. METHOD FOR PRODUCING MOLDED ARTICLE
JP2017160330A (en) * 2016-03-09 2017-09-14 ダイキン工業株式会社 Manufacturing method of molded body
CN108779258B (en) * 2016-03-09 2022-08-05 大金工业株式会社 Method for producing molded article
CN110248973A (en) * 2017-01-27 2019-09-17 国立大学法人大阪大学 The manufacturing method of molding material and the resin-formed body using the molding material
EP3575334A4 (en) * 2017-01-27 2020-08-12 Osaka University MOLDING MATERIAL AND METHOD FOR MANUFACTURING A RESIN MOLDED ARTICLE USING THEREOF
US11623975B2 (en) 2017-01-27 2023-04-11 Osaka University Molding material and method for producing resin molded body using same
CN119708730A (en) * 2025-02-27 2025-03-28 浙江有氟密阀门有限公司 Modified polytetrafluoroethylene pipe and preparation method thereof

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee