RU2342403C2 - Полимеризация в водной эмульсии без эмульгатора для получения сополимеров фторированного олефина и углеводородного олефина - Google Patents

Полимеризация в водной эмульсии без эмульгатора для получения сополимеров фторированного олефина и углеводородного олефина Download PDF

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Publication number
RU2342403C2
RU2342403C2 RU2005111865/04A RU2005111865A RU2342403C2 RU 2342403 C2 RU2342403 C2 RU 2342403C2 RU 2005111865/04 A RU2005111865/04 A RU 2005111865/04A RU 2005111865 A RU2005111865 A RU 2005111865A RU 2342403 C2 RU2342403 C2 RU 2342403C2
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fluorinated
olefin
polymerization
hydrocarbon
fluoropolymer
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RU2005111865/04A
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Russian (ru)
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RU2005111865A (ru
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Харалд КАСПАР (US)
Харалд Каспар
Питер Дж. СКОТТ (US)
Питер Дж. СКОТТ
Клаус ХИНТЦЕР (US)
Клаус Хинтцер
Гернот ЛЁР (US)
Гернот ЛЁР
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Зм Инновейтив Пропертиз Компани
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F214/00Copolymers 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
    • C08F214/18Monomers containing fluorine

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  • 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)
  • Polymerisation Methods In General (AREA)
RU2005111865/04A 2002-10-31 2003-10-21 Полимеризация в водной эмульсии без эмульгатора для получения сополимеров фторированного олефина и углеводородного олефина RU2342403C2 (ru)

Applications Claiming Priority (2)

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US42277002P 2002-10-31 2002-10-31
US60/422,770 2002-10-31

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RU2005111865A RU2005111865A (ru) 2005-10-27
RU2342403C2 true RU2342403C2 (ru) 2008-12-27

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US (1) US7064170B2 (enExample)
EP (1) EP1556426B1 (enExample)
JP (1) JP2006504844A (enExample)
CN (1) CN100354324C (enExample)
AT (1) ATE430169T1 (enExample)
AU (1) AU2003291646A1 (enExample)
DE (1) DE60327452D1 (enExample)
RU (1) RU2342403C2 (enExample)
WO (1) WO2004041878A1 (enExample)
ZA (1) ZA200504411B (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2829253C1 (ru) * 2020-11-19 2024-10-30 Дайкин Индастриз, Лтд. Способ производства водной дисперсии перфторэластомера, композиции, сшиваемой композиции и сшитого продукта

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7125941B2 (en) * 2001-03-26 2006-10-24 3M Innovative Properties Company Aqueous emulsion polymerization process for producing fluoropolymers
CN1289547C (zh) * 2001-05-02 2006-12-13 3M创新有限公司 在醚类链转移剂存在下制备含氟聚合物的水乳液聚合方法
US7279522B2 (en) 2001-09-05 2007-10-09 3M Innovative Properties Company Fluoropolymer dispersions containing no or little low molecular weight fluorinated surfactant
AU2003291646A1 (en) * 2002-10-31 2004-06-07 3M Innovative Properties Company Emulsifier free aqueous emulsion polymerization to produce copolymers of a fluorinated olefin and hydrocarbon olefin
EP1529785B1 (en) 2003-10-24 2011-03-16 3M Innovative Properties Company Aqueous dispersions of polytetrafluoroethylene particles
EP1533325B1 (en) 2003-11-17 2011-10-19 3M Innovative Properties Company Aqueous dispersions of polytetrafluoroethylene having a low amount of fluorinated surfactant
EP1570917B1 (en) * 2004-03-01 2009-06-10 3M Innovative Properties Company Method of coating a substrate with a fluoropolymer dispersion
US7691932B2 (en) 2004-09-27 2010-04-06 3M Innovative Properties Company Method of making a composition and nanocomposites therefrom
US7488781B2 (en) * 2005-05-25 2009-02-10 Gore Enterprise Holdings, Inc. High purity transparent perfluoroelastomer parts and a process to produce the same
US20060270780A1 (en) * 2005-05-25 2006-11-30 Ping Xu High purity perfluoroelastomer composites and a processes to produce the same
GB2427170A (en) * 2005-06-17 2006-12-20 3M Innovative Properties Co Fluoropolymer film having glass microspheres
GB0525978D0 (en) * 2005-12-21 2006-02-01 3M Innovative Properties Co Fluorinated Surfactants For Making Fluoropolymers
GB0523853D0 (en) 2005-11-24 2006-01-04 3M Innovative Properties Co Fluorinated surfactants for use in making a fluoropolymer
US7795332B2 (en) 2005-07-15 2010-09-14 3M Innovative Properties Company Method of removing fluorinated carboxylic acid from aqueous liquid
US20080015304A1 (en) * 2006-07-13 2008-01-17 Klaus Hintzer Aqueous emulsion polymerization process for producing fluoropolymers
GB0514398D0 (en) * 2005-07-15 2005-08-17 3M Innovative Properties Co Aqueous emulsion polymerization of fluorinated monomers using a fluorinated surfactant
GB0514387D0 (en) * 2005-07-15 2005-08-17 3M Innovative Properties Co Aqueous emulsion polymerization of fluorinated monomers using a perfluoropolyether surfactant
GB2430437A (en) * 2005-09-27 2007-03-28 3M Innovative Properties Co Method of making a fluoropolymer
US7728087B2 (en) 2005-12-23 2010-06-01 3M Innovative Properties Company Fluoropolymer dispersion and method for making the same
US8580896B2 (en) 2006-05-10 2013-11-12 Daikin Industries, Ltd. Process for preparing fluorine-containing polymer
US20070276103A1 (en) * 2006-05-25 2007-11-29 3M Innovative Properties Company Fluorinated Surfactants
US7754795B2 (en) * 2006-05-25 2010-07-13 3M Innovative Properties Company Coating composition
US8119750B2 (en) * 2006-07-13 2012-02-21 3M Innovative Properties Company Explosion taming surfactants for the production of perfluoropolymers
US20100084343A1 (en) * 2007-02-16 2010-04-08 Mader Brian T System and process for the removal of fluorochemicals from water
US20080264864A1 (en) 2007-04-27 2008-10-30 3M Innovative Properties Company PROCESS FOR REMOVING FLUORINATED EMULSIFIER FROM FLUOROPOLMER DISPERSIONS USING AN ANION-EXCHANGE RESIN AND A pH-DEPENDENT SURFACTANT AND FLUOROPOLYMER DISPERSIONS CONTAINING A pH-DEPENDENT SURFACTANT
CN101679790B (zh) * 2007-05-23 2012-09-19 3M创新有限公司 氟化表面活性剂的水性组合物及其使用方法
US8476385B2 (en) * 2007-06-06 2013-07-02 3M Innovative Properties Company Fluorinated ether compositions and methods of using the same
JP5532532B2 (ja) * 2007-06-25 2014-06-25 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及びその製造方法
GB0712191D0 (en) * 2007-06-25 2007-08-01 3M Innovative Properties Co Process for removing fluorinated compounds for an aqueous phase originating from the preparation of fluoropolymers
US9040646B2 (en) * 2007-10-04 2015-05-26 W. L. Gore & Associates, Inc. Expandable TFE copolymers, methods of making, and porous, expanded articles thereof
US8637144B2 (en) * 2007-10-04 2014-01-28 W. L. Gore & Associates, Inc. Expandable TFE copolymers, method of making, and porous, expended articles thereof
US9650479B2 (en) 2007-10-04 2017-05-16 W. L. Gore & Associates, Inc. Dense articles formed from tetrafluoroethylene core shell copolymers and methods of making the same
BRPI0915955A2 (pt) * 2008-07-18 2019-02-26 3M Innovative Proferties Company compostos fluorados de éter e métodos para uso dos mesmos
CN102282191A (zh) * 2008-11-25 2011-12-14 3M创新有限公司 氟化醚尿烷及其使用方法
WO2010080473A1 (en) 2008-12-18 2010-07-15 3M Innovative Properties Company Method of contacting hydrocarbon-bearing formations with fluorinated ether compositions
JP5407643B2 (ja) * 2009-07-31 2014-02-05 旭硝子株式会社 含フッ素共重合体の製造方法
JP6201236B2 (ja) 2010-11-09 2017-09-27 ザ ケマーズ カンパニー エフシー リミテッド ライアビリティ カンパニー フルオロモノマーの水性重合における核形成
CN106188353B (zh) 2010-11-09 2018-08-31 科慕埃弗西有限公司 使用烃表面活性剂的含氟单体的含水聚合
US9074025B2 (en) 2010-11-09 2015-07-07 The Chemours Company Fc, Llc Reducing the telogenic behavior of hydrocarbon-containing surfactants in aqueous dispersion fluoromonomer polymerization
WO2012150256A1 (en) * 2011-05-03 2012-11-08 Solvay Specialty Polymers Italy S.P.A. Method for manufacturing fluoroelastomers
MY165000A (en) 2011-07-15 2018-02-28 Solvay Specialty Polymers It Aqueous vinylidene fluoride polymer latex
EP2927246B1 (en) * 2013-01-23 2017-10-25 Daikin Industries, Ltd. Method for recovering fluorine-containing ether
JP6622209B2 (ja) 2013-11-26 2019-12-18 ザ ケマーズ カンパニー エフシー リミテッド ライアビリティ カンパニー フルオロモノマーの水性重合において核を形成するためのポリアルキレンオキシドの使用
US9644054B2 (en) 2014-12-19 2017-05-09 W. L. Gore & Associates, Inc. Dense articles formed from tetrafluoroethylene core shell copolymers and methods of making the same
JP7657022B2 (ja) * 2017-04-11 2025-04-04 ソルベイ スペシャルティ ポリマーズ イタリー エス.ピー.エー. フルオロポリマーの製造方法
CN110078855B (zh) * 2019-04-22 2020-07-14 中昊晨光化工研究院有限公司 一种含氟聚合物及其制备方法
CN116178598A (zh) * 2022-06-20 2023-05-30 福建海德福新材料有限公司 一种四氟乙烯基聚合物树脂及其制备方法
WO2025263524A1 (ja) * 2024-06-19 2025-12-26 Agc株式会社 含フッ素重合体の製造方法
WO2025263526A1 (ja) * 2024-06-19 2025-12-26 Agc株式会社 含フッ素重合体の製造方法
WO2025263525A1 (ja) * 2024-06-19 2025-12-26 Agc株式会社 含フッ素重合体の製造方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4277586A (en) * 1974-11-20 1981-07-07 Asahi Glass Company, Ltd. Process for preparing a propylene-tetrafluoroethylene copolymer
EP0320156A2 (en) * 1987-12-10 1989-06-14 Zeneca Limited Production of aqueous based fluoro-polymer compositions
EP0446725A1 (en) * 1990-03-01 1991-09-18 E.I. Du Pont De Nemours And Company Base resistant fluoroelastomers with improved processibility and curability
WO1997017381A1 (en) * 1995-11-06 1997-05-15 Alliedsignal Inc. Method of manufacturing fluoropolymers
RU2128667C1 (ru) * 1993-10-29 1999-04-10 Аусимонт С.п.А. Способ (со)полимеризации фторированных олефиновых мономеров

Family Cites Families (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2567011A (en) * 1949-01-10 1951-09-04 Minnesota Mining & Mfg Fluorocarbon acids and derivatives
US2732398A (en) * 1953-01-29 1956-01-24 cafiicfzsojk
US2809990A (en) * 1955-12-29 1957-10-15 Minnesota Mining & Mfg Fluorocarbon acids and derivatives
US3345317A (en) * 1963-04-04 1967-10-03 Thiokol Chemical Corp Emulsion polymerization of tetrafluoroethylene using trifluorotrichloroethane as emulsion stabilizer
JPS4928026B1 (enExample) * 1965-01-12 1974-07-23
GB1291936A (en) 1970-11-19 1972-10-04 Asahi Glass Co Ltd Process for producing a copolymer of tetrafluoroethylene and propylene
US3876654A (en) * 1970-12-23 1975-04-08 Du Pont Fluoroelastomer composition
JPS497058B1 (enExample) * 1970-12-30 1974-02-18
US4025481A (en) * 1971-01-28 1977-05-24 Produits Chimiques Ugine Kuhlmann Method for the preparation of aqueous dispersions of polytetrafluoroethylene with halogenated hydrocarbon as stabilizing agent
US4000356A (en) * 1972-06-19 1976-12-28 Dynamit Nobel Aktiengesellschaft Process for the preparation of thermoplastically workable fluoro-olefin polymers
US4035565A (en) * 1975-03-27 1977-07-12 E. I. Du Pont De Nemours And Company Fluoropolymer containing a small amount of bromine-containing olefin units
US4029868A (en) * 1976-03-10 1977-06-14 E. I. Du Pont De Nemours And Company Tetrafluoroethylene terpolymers
JPS539848A (en) * 1976-07-16 1978-01-28 Asahi Glass Co Ltd Heat treatment of fluorine-containing elastomers
JPS53125491A (en) * 1977-04-08 1978-11-01 Daikin Ind Ltd Fluorine-containing polymer easily curable and its curable composition
JPS54132691A (en) * 1978-04-06 1979-10-15 Asahi Glass Co Ltd Preparation of ethylene-tetrafluoroethylene copolymer
JPS5529519A (en) * 1978-08-22 1980-03-01 Asahi Glass Co Ltd Preparation of fluorocopolymer
DE2903981A1 (de) * 1979-02-02 1980-08-07 Hoechst Ag Rueckgewinnung fluorierter emulgatorsaeuren aus basischen anionenaustauschern
US4233421A (en) * 1979-02-26 1980-11-11 Minnesota Mining And Manufacturing Company Fluoroelastomer composition containing sulfonium curing agents
US4463144A (en) * 1980-09-10 1984-07-31 Asahi Glass Company Ltd. Process for producing propylene-tetrafluoroethylene copolymer
DE3135598A1 (de) * 1981-09-09 1983-03-17 Hoechst Ag, 6000 Frankfurt "kontinuierliches verfahren zur agglomerierung von ptee-pulvern im fluessigen medium und damit gewonnenes modifiziertes ptee-pulver"
JPS5920310A (ja) 1982-07-27 1984-02-02 Daikin Ind Ltd 含フッ素ポリマー硬化用組成物
US5086123A (en) * 1984-02-27 1992-02-04 Minnesota Mining And Manufacturing Company Fluoroelastomer compositions containing fluoroaliphatic sulfonamides as curing agents
JPS60248710A (ja) * 1984-05-22 1985-12-09 Daikin Ind Ltd 新規エチレン/テトラフルオロエチレン系共重合体
EP0199138B1 (en) * 1985-03-28 1989-02-22 Daikin Industries, Limited Novel fluorovinyl ether and copolymer comprising the same
IT1187684B (it) * 1985-07-08 1987-12-23 Montefluos Spa Procedimento per la preparazione di fluoroelastomeri vulcanizzabili e prodotti cosi' ottenuti
JPS62260807A (ja) * 1986-05-07 1987-11-13 Nippon Mektron Ltd 含フッ素重合体の製造方法
IT1204903B (it) * 1986-06-26 1989-03-10 Ausimont Spa Processo di polimerizzazione in dispersione acquosa di monomeri florati
US4912171A (en) * 1988-04-01 1990-03-27 Minnesota Mining And Manufacturing Company Fluoroelastomer curing process with phosphonium compound
IT1235545B (it) 1989-07-10 1992-09-09 Ausimont Srl Fluoroelastomeri dotati di migliore processabilita' e procedimento di preparazione
US5453477A (en) * 1992-05-01 1995-09-26 Alliedsignal Inc. Process of polymerizing chloroetrifluoroethylene with alkyl hydroperoxide and metal metabisulfite
US5262490A (en) * 1992-08-24 1993-11-16 Minnesota Mining And Manufacturing Company Fluoroelastomer composition with organo-onium compounds
US5285002A (en) * 1993-03-23 1994-02-08 Minnesota Mining And Manufacturing Company Fluorine-containing polymers and preparation and use thereof
IT1265461B1 (it) 1993-12-29 1996-11-22 Ausimont Spa Fluoroelastomeri comprendenti unita' monomeriche derivanti da una bis-olefina
WO1996024622A1 (en) 1995-02-10 1996-08-15 Alliedsignal Inc. Production of fluoropolymers, fluoropolymer suspension and polymer formed therefrom
JP3223776B2 (ja) * 1995-03-31 2001-10-29 日本メクトロン株式会社 含フッ素エラストマー組成物
JP3082626B2 (ja) * 1995-07-19 2000-08-28 日本メクトロン株式会社 含フッ素エラストマー組成物
JPH0977829A (ja) * 1995-09-08 1997-03-25 Toagosei Co Ltd パーハロオレフィン共重合体及び該共重合体からなる架橋成形体の製造方法
IT1276979B1 (it) 1995-10-20 1997-11-03 Ausimont Spa Composizioni fluoroelastomeriche
US5591804A (en) * 1995-12-21 1997-01-07 Minnesota Mining And Manufacturing Company Fluorinated onium salts, curable compositions containing same, and method of curing using same
US5936060A (en) * 1996-11-25 1999-08-10 E. I. Du Pont De Nemours And Company Perfluoroelastomer composition having improved processability
US5677389A (en) * 1996-11-25 1997-10-14 E. I. Du Pont De Nemours Perfluoroelastomer composition having enhanced curing performance
US5728773A (en) * 1997-02-21 1998-03-17 Minnesota Mining And Manufacturing Company Fluoroelastomer composition with organo-onium and blocked-carbonate compounds
US6281296B1 (en) 1998-08-10 2001-08-28 Dupont Dow Elastomers L.L.C. Curable perfluoroelastomer composition
EP1160258B1 (en) * 1998-10-13 2004-07-14 Daikin Industries, Ltd. Process for producing fluoropolymer
JP2003524675A (ja) 1998-11-30 2003-08-19 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー フルオロモノマー重合
DE19857111A1 (de) 1998-12-11 2000-06-15 Dyneon Gmbh Wäßrige Dispersionen von Fluorpolymeren
EP1193275A4 (en) * 1999-02-15 2002-06-19 Daikin Ind Ltd METHOD FOR PRODUCING FLUORINE POLYMERS
US6429258B1 (en) * 1999-05-20 2002-08-06 E. I. Du Pont De Nemours & Company Polymerization of fluoromonomers
JP4352546B2 (ja) * 1999-12-22 2009-10-28 ユニマテック株式会社 フルオロエラストマー、その製造方法、架橋性組成物およびその硬化物
CA2446016A1 (en) * 2001-05-02 2002-11-07 3M Innovative Properties Company Emulsifier free aqueous emulsion polymerization process for making fluoropolymers
JP4295098B2 (ja) * 2001-09-05 2009-07-15 スリーエム イノベイティブ プロパティズ カンパニー 低分子量フッ素化界面活性剤を全くまたは殆ど含まないフルオロポリマー分散
DE60214343T2 (de) * 2002-05-22 2007-03-29 3M Innovative Properties Co., Saint Paul Prozess zur Reduzierung des Gehaltes an fluorierten Emulgatoren in wässrigen Fluorpolymer-Dispersionen
AU2003291646A1 (en) * 2002-10-31 2004-06-07 3M Innovative Properties Company Emulsifier free aqueous emulsion polymerization to produce copolymers of a fluorinated olefin and hydrocarbon olefin

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4277586A (en) * 1974-11-20 1981-07-07 Asahi Glass Company, Ltd. Process for preparing a propylene-tetrafluoroethylene copolymer
EP0320156A2 (en) * 1987-12-10 1989-06-14 Zeneca Limited Production of aqueous based fluoro-polymer compositions
EP0446725A1 (en) * 1990-03-01 1991-09-18 E.I. Du Pont De Nemours And Company Base resistant fluoroelastomers with improved processibility and curability
RU2128667C1 (ru) * 1993-10-29 1999-04-10 Аусимонт С.п.А. Способ (со)полимеризации фторированных олефиновых мономеров
WO1997017381A1 (en) * 1995-11-06 1997-05-15 Alliedsignal Inc. Method of manufacturing fluoropolymers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2829253C1 (ru) * 2020-11-19 2024-10-30 Дайкин Индастриз, Лтд. Способ производства водной дисперсии перфторэластомера, композиции, сшиваемой композиции и сшитого продукта

Also Published As

Publication number Publication date
ATE430169T1 (de) 2009-05-15
EP1556426B1 (en) 2009-04-29
US20040087703A1 (en) 2004-05-06
RU2005111865A (ru) 2005-10-27
AU2003291646A1 (en) 2004-06-07
ZA200504411B (en) 2006-02-22
EP1556426A1 (en) 2005-07-27
US7064170B2 (en) 2006-06-20
JP2006504844A (ja) 2006-02-09
CN1708519A (zh) 2005-12-14
CN100354324C (zh) 2007-12-12
WO2004041878A1 (en) 2004-05-21
DE60327452D1 (de) 2009-06-10

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