EP4031589A4 - LOW MOLECULAR WEIGHT POLYTETRAFLUORETHYLENE MICROPOWDER AND METHOD FOR THE PRODUCTION THEREOF - Google Patents

LOW MOLECULAR WEIGHT POLYTETRAFLUORETHYLENE MICROPOWDER AND METHOD FOR THE PRODUCTION THEREOF Download PDF

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Publication number
EP4031589A4
EP4031589A4 EP20866024.1A EP20866024A EP4031589A4 EP 4031589 A4 EP4031589 A4 EP 4031589A4 EP 20866024 A EP20866024 A EP 20866024A EP 4031589 A4 EP4031589 A4 EP 4031589A4
Authority
EP
European Patent Office
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.)
Pending
Application number
EP20866024.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP4031589A1 (en
Inventor
Deepak Kapoor
Rajeev Chauhan
Sanjay BHAN
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 EP4031589A1 publication Critical patent/EP4031589A1/en
Publication of EP4031589A4 publication Critical patent/EP4031589A4/en
Pending legal-status Critical Current

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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)
EP20866024.1A 2019-09-17 2020-09-16 LOW MOLECULAR WEIGHT POLYTETRAFLUORETHYLENE MICROPOWDER AND METHOD FOR THE PRODUCTION THEREOF Pending EP4031589A4 (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 (2)

Publication Number Publication Date
EP4031589A1 EP4031589A1 (en) 2022-07-27
EP4031589A4 true EP4031589A4 (en) 2023-10-04

Family

ID=74884009

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20866024.1A Pending EP4031589A4 (en) 2019-09-17 2020-09-16 LOW MOLECULAR WEIGHT POLYTETRAFLUORETHYLENE MICROPOWDER AND METHOD FOR THE PRODUCTION THEREOF

Country Status (6)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7385150B2 (ja) * 2022-04-18 2023-11-22 ダイキン工業株式会社 精製ポリテトラフルオロエチレン粉末の製造方法及び低分子量ポリテトラフルオロエチレン粉末
WO2024172080A1 (ja) * 2023-02-16 2024-08-22 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水性分散液の製造方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6395848B1 (en) * 1999-05-20 2002-05-28 E. I. Du Pont De Nemours And Company Polymerization of fluoromonomers
US20080118741A1 (en) * 2006-11-17 2008-05-22 E. I. Du Pont De Nemours And Company Glass Articles with Adhesion and Stain Resistant Non-Stick Coatings
US20130345368A1 (en) * 2012-05-09 2013-12-26 E I Du Pont De Nemours And Company Fluoropolymer Resin Treatment Employing Melt Extrusion and Exposure to Oxygen Source to Reduce Discoloration

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7176265B2 (en) * 2002-11-22 2007-02-13 E. I. Du Pont De Nemours And Company Directly polymerized low molecular weight granular polytetrafluoroethylene
CN101998968B (zh) * 2008-04-14 2012-08-29 旭硝子株式会社 聚四氟乙烯细粉的制造方法
US8754176B2 (en) * 2009-03-31 2014-06-17 Daikin Industries, Ltd. Low molecular weight polytetrafluoroethylene powder and preparation method therefor
WO2012043881A1 (en) * 2010-09-30 2012-04-05 Daikin Industries, Ltd. Process for producing polytetrafluoroethylene fine powder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6395848B1 (en) * 1999-05-20 2002-05-28 E. I. Du Pont De Nemours And Company Polymerization of fluoromonomers
US20080118741A1 (en) * 2006-11-17 2008-05-22 E. I. Du Pont De Nemours And Company Glass Articles with Adhesion and Stain Resistant Non-Stick Coatings
US20130345368A1 (en) * 2012-05-09 2013-12-26 E I Du Pont De Nemours And Company Fluoropolymer Resin Treatment Employing Melt Extrusion and Exposure to Oxygen Source to Reduce Discoloration

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2021053531A1 *

Also Published As

Publication number Publication date
GB2604463A (en) 2022-09-07
GB2604463B (en) 2024-02-28
KR20220065003A (ko) 2022-05-19
JP2023501048A (ja) 2023-01-18
CN114450317A (zh) 2022-05-06
WO2021053531A1 (en) 2021-03-25
EP4031589A1 (en) 2022-07-27
GB202205473D0 (en) 2022-05-25

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