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GB202205473D0 - Low molecular weight polytetrafluoroethylene micropowder and process for preparing the same - Google Patents

Low molecular weight polytetrafluoroethylene micropowder and process for preparing the same

Info

Publication number
GB202205473D0
GB202205473D0 GBGB2205473.8A GB202205473A GB202205473D0 GB 202205473 D0 GB202205473 D0 GB 202205473D0 GB 202205473 A GB202205473 A GB 202205473A GB 202205473 D0 GB202205473 D0 GB 202205473D0
Authority
GB
United Kingdom
Prior art keywords
preparing
molecular weight
same
low molecular
weight 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.)
Granted
Application number
GBGB2205473.8A
Other versions
GB2604463A (en
GB2604463B (en
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.)
Gujarat Fluorochemicals Ltd
Original Assignee
Gujarat Fluorochemicals 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 Gujarat Fluorochemicals Ltd filed Critical Gujarat Fluorochemicals Ltd
Publication of GB202205473D0 publication Critical patent/GB202205473D0/en
Publication of GB2604463A publication Critical patent/GB2604463A/en
Application granted granted Critical
Publication of GB2604463B publication Critical patent/GB2604463B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • C08F14/00—Homopolymers and 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
    • C08F14/18—Monomers containing fluorine
    • C08F14/26—Tetrafluoroethene
    • 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
    • C08F114/00—Homopolymers 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
    • C08F114/18—Monomers containing fluorine
    • C08F114/26—Tetrafluoroethene
    • 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
    • C08F2/00—Processes of polymerisation
    • C08F2/12—Polymerisation in non-solvents
    • C08F2/16—Aqueous medium
    • C08F2/18—Suspension polymerisation
    • 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
    • C08F2/00—Processes of polymerisation
    • C08F2/12—Polymerisation in non-solvents
    • C08F2/16—Aqueous medium
    • C08F2/22—Emulsion polymerisation
    • C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
    • 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
    • C08F2/00—Processes of polymerisation
    • C08F2/12—Polymerisation in non-solvents
    • C08F2/16—Aqueous medium
    • C08F2/22—Emulsion polymerisation
    • C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
    • C08F2/28—Emulsion polymerisation with the aid of emulsifying agents cationic
    • 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
    • C08F2/00—Processes of polymerisation
    • C08F2/38—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation
    • 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
    • C08F4/00—Polymerisation catalysts
    • C08F4/28—Oxygen or compounds releasing free oxygen
    • C08F4/32—Organic compounds
    • C08F4/34—Per-compounds with one peroxy-radical
    • 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
    • C08F6/008—Treatment of solid polymer wetted by water or organic solvents, e.g. coagulum, filter cakes
    • 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
    • C08F6/14—Treatment of polymer emulsions
    • C08F6/18—Increasing the size of the dispersed particles
    • 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
    • C08F6/14—Treatment of polymer emulsions
    • C08F6/22—Coagulation
    • 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
    • C08F6/24—Treatment of polymer suspensions
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Polymerisation Methods In General (AREA)
  • Polymerization Catalysts (AREA)
GB2205473.8A 2019-09-17 2020-09-16 Low molecular weight polytetrafluoroethylene micropowder and process for preparing the same Expired - Fee Related GB2604463B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201911037462 2019-09-17
PCT/IB2020/058608 WO2021053531A1 (en) 2019-09-17 2020-09-16 Low molecular weight polytetrafluoroethylene micropowder and process for preparing the same

Publications (3)

Publication Number Publication Date
GB202205473D0 true GB202205473D0 (en) 2022-05-25
GB2604463A GB2604463A (en) 2022-09-07
GB2604463B GB2604463B (en) 2024-02-28

Family

ID=74884009

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2205473.8A Expired - Fee Related GB2604463B (en) 2019-09-17 2020-09-16 Low molecular weight polytetrafluoroethylene micropowder and process for preparing the same

Country Status (6)

Country Link
EP (1) EP4031589A4 (en)
JP (1) JP2023501048A (en)
KR (1) KR20220065003A (en)
CN (1) CN114450317A (en)
GB (1) GB2604463B (en)
WO (1) WO2021053531A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7385150B2 (en) * 2022-04-18 2023-11-22 ダイキン工業株式会社 Method for producing purified polytetrafluoroethylene powder and low molecular weight polytetrafluoroethylene powder
WO2024172080A1 (en) * 2023-02-16 2024-08-22 ダイキン工業株式会社 Method for producing low molecular weight polytetrafluoroethylene aqueous dispersion
KR102755274B1 (en) 2024-07-05 2025-01-22 최병렬 High-efficiency Compressor-Reactor Catalyst based ethylene, propane and polymer production system and its operation method

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6531559B1 (en) * 1998-08-06 2003-03-11 Eidgenössische Technische Hochschule Zürich Melt-processible poly (tetrafluoroethylene)
US6395848B1 (en) * 1999-05-20 2002-05-28 E. I. Du Pont De Nemours And Company Polymerization of fluoromonomers
JPWO2003077363A1 (en) * 2002-03-13 2005-07-07 ダイキン工業株式会社 Antenna cover
US7176265B2 (en) * 2002-11-22 2007-02-13 E. I. Du Pont De Nemours And Company Directly polymerized low molecular weight granular polytetrafluoroethylene
EP1681308B1 (en) * 2003-10-22 2014-07-09 Daikin Industries, Ltd. Method of producing an aqueous tetrafluoroethylene polymer dispersion
US8071198B2 (en) * 2006-11-17 2011-12-06 E.I. Du Pont De Nemours And Company Glass articles with adhesion and stain resistant non-stick coatings
EP2267047B1 (en) * 2008-04-14 2012-01-18 Asahi Glass Company, Limited Production method of polytetrafluoroethylene fine powder
CN102369221B (en) * 2009-03-31 2014-03-12 大金工业株式会社 Low molecular weight polytetrafluoroethylene powder and preparation method therefor
EP2621967B1 (en) * 2010-09-30 2020-08-05 Daikin Industries, Ltd. Process for producing polytetrafluoroethylene fine powder
US9175110B2 (en) * 2012-05-09 2015-11-03 The Chemours Company Fc, Llc Fluoropolymer resin treatment employing melt extrusion and exposure to oxygen source to reduce discoloration

Also Published As

Publication number Publication date
KR20220065003A (en) 2022-05-19
GB2604463A (en) 2022-09-07
CN114450317A (en) 2022-05-06
JP2023501048A (en) 2023-01-18
EP4031589A4 (en) 2023-10-04
EP4031589A1 (en) 2022-07-27
GB2604463B (en) 2024-02-28
WO2021053531A1 (en) 2021-03-25

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Legal Events

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

Effective date: 20240916