DE2145952B2 - Verfahren zum konzentrieren von waessrigen polytetrafluoraethylendispersionen - Google Patents

Verfahren zum konzentrieren von waessrigen polytetrafluoraethylendispersionen

Info

Publication number
DE2145952B2
DE2145952B2 DE19712145952 DE2145952A DE2145952B2 DE 2145952 B2 DE2145952 B2 DE 2145952B2 DE 19712145952 DE19712145952 DE 19712145952 DE 2145952 A DE2145952 A DE 2145952A DE 2145952 B2 DE2145952 B2 DE 2145952B2
Authority
DE
Germany
Prior art keywords
dispersion
weight
added
concentrated
cloud point
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.)
Ceased
Application number
DE19712145952
Other languages
German (de)
English (en)
Other versions
DE2145952A1 (de
Inventor
David Alan Vienna W.Va. Holmes (V.St.A.)
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of DE2145952A1 publication Critical patent/DE2145952A1/de
Publication of DE2145952B2 publication Critical patent/DE2145952B2/de
Ceased 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
    • C08F6/00—Post-polymerisation treatments
    • C08F6/14—Treatment of polymer emulsions
    • C08F6/20—Concentration

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Paints Or Removers (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
DE19712145952 1970-09-15 1971-09-14 Verfahren zum konzentrieren von waessrigen polytetrafluoraethylendispersionen Ceased DE2145952B2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7249770A 1970-09-15 1970-09-15

Publications (2)

Publication Number Publication Date
DE2145952A1 DE2145952A1 (de) 1972-03-16
DE2145952B2 true DE2145952B2 (de) 1976-11-25

Family

ID=22107971

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712145952 Ceased DE2145952B2 (de) 1970-09-15 1971-09-14 Verfahren zum konzentrieren von waessrigen polytetrafluoraethylendispersionen

Country Status (7)

Country Link
US (1) US3704272A (enExample)
JP (1) JPS5221532B1 (enExample)
CA (1) CA930090A (enExample)
DE (1) DE2145952B2 (enExample)
FR (1) FR2106536B1 (enExample)
GB (1) GB1319206A (enExample)
NL (1) NL7112691A (enExample)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5272186A (en) * 1992-05-01 1993-12-21 E. I. Du Pont De Nemours And Company Concentration of fluoropolymer dispersions using acrylic polymers of high acid content
JP3346090B2 (ja) * 1995-03-31 2002-11-18 ダイキン工業株式会社 ポリテトラフルオロエチレン水性分散液組成物及びその用途
WO1999043750A1 (en) * 1998-02-24 1999-09-02 Asahi Glass Fluoropolymers Co. Ltd. Aqueous polytetrafluoroethylene dispersion composition
WO2003106556A1 (ja) * 2002-05-20 2003-12-24 ダイキン工業株式会社 含フッ素樹脂水性分散体組成物及び含フッ素水性塗料組成物
CN100347204C (zh) * 2002-11-29 2007-11-07 大金工业株式会社 含氟聚合物水性乳液的精制方法、精制乳液及含氟加工品
ITMI20032050A1 (it) * 2003-10-21 2005-04-22 Solvay Solexis Spa Processo per la preparazione di dispersori di fluoropolimeri.
ITMI20040031A1 (it) 2004-01-14 2004-04-14 Solvay Solexis Spa Processo per la preparazione di dispersori di fluoropolimeri
US7790041B2 (en) * 2004-08-11 2010-09-07 E.I. Du Pont De Nemours And Company Removing fluorosurfactant from aqueous fluoropolymer dispersions
US20070023360A1 (en) * 2005-08-01 2007-02-01 Noelke Charles J Removing fluorosurfactant from aqueous fluoropolymer dispersion using sorbent pouches
US7666927B2 (en) * 2004-12-22 2010-02-23 E.I. Du Pont De Nemours And Company Removing fluorosurfactant from aqueous fluoropolymer dispersions using anion exchange polymer with functional groups resistant to degradation to trialkylamines
US7659329B2 (en) * 2004-12-22 2010-02-09 E. I. Du Pont De Nemours And Company Removing fluorosurfactant from aqueous fluoropolymer dispersions using monodisperse ion exchange resin
US20060135681A1 (en) * 2004-12-22 2006-06-22 Cavanaugh Robert J Viscosity control for reduced fluorosurfactant aqueous fluoropolymer dispersions by the addition of cationic surfactant
US7619018B2 (en) * 2004-12-22 2009-11-17 E.I. Du Pont De Nemours And Company Process for removing fluorosurfactant from aqueous fluoropolymer dispersions and reducing scum formation
ITMI20042554A1 (it) * 2004-12-30 2005-03-30 Solvay Solexis Spa Procedimento per la preparazione di dispersioni di fluoropolimeri
ITMI20042553A1 (it) * 2004-12-30 2005-03-30 Solvay Solexis Spa Processo per la preparazione di dispersioni di fluoropolimeri
US20060183842A1 (en) * 2005-02-10 2006-08-17 Johnson David W Fluoropolymer dispersions with reduced fluorosurfactant content and high shear stability
US20060178472A1 (en) * 2005-02-10 2006-08-10 Johnson David W Process for producing low fluorosurfactant-containing aqueous fluoropolymer dispersions with controlled pH
US7671111B2 (en) * 2005-02-10 2010-03-02 E.I. Du Pont De Nemours And Company Monitoring column breakthrough in a process for removing fluorosurfactant from aqueous fluoropolymer dispersions
US20090069492A1 (en) * 2005-04-13 2009-03-12 Nobuhiko Tsuda Process for producing aqueous fluoropolymer dispersion
CN101155858A (zh) * 2005-04-13 2008-04-02 大金工业株式会社 含氟聚合物水性分散液的制造方法
ITMI20050705A1 (it) * 2005-04-20 2006-10-21 Solvay Solexis Spa Processo per la preparazione di dispersori di fluoropolimeri
US7612139B2 (en) * 2005-05-20 2009-11-03 E.I. Du Pont De Nemours And Company Core/shell fluoropolymer dispersions with low fluorosurfactant content
US20060281845A1 (en) * 2005-06-10 2006-12-14 Ramin Amin-Sanayei Aqueous process for making fluoropolymers
ITMI20051397A1 (it) * 2005-07-21 2007-01-22 Solvay Solexis Spa Polveri fini di fluoropolimeri
EP1845116A1 (en) * 2006-04-11 2007-10-17 Solvay Solexis S.p.A. Fluoropolymer dispersion purification
US7666928B2 (en) * 2006-05-31 2010-02-23 E.I. Du Pont De Nemours And Company Staged addition of non-fluorinated anionic surfactant to reduced fluorosurfactant fluoropolymer dispersion
US7666929B2 (en) * 2006-05-31 2010-02-23 E.I. Du Pont De Nemours And Company Process for reducing fluorosurfactant content of fluropolymer dispersions using anionic surfactant-treated anion exchange resin
US8153738B2 (en) 2008-12-23 2012-04-10 E I Du Pont De Nemours And Company Fluoropolymer produced by aqueous polymerization using dispersed particulate of fluorinated ionomer
US8058376B2 (en) 2008-12-23 2011-11-15 E. I. Du Pont De Nemours And Company Fluoropolymer produced by aqueous polymerization using dispersed particulate of fluorinated lonomer produced in situ
US8436054B2 (en) * 2008-12-23 2013-05-07 E I Du Pont De Nemours And Company Fluorinated ionomer produced by aqueous polymerization using dispersed particulate of fluorinated ionomer produced in situ
US8436053B2 (en) * 2008-12-23 2013-05-07 E.I. Du Pont De Nemours And Company Fluorinated ionomer produced by aqueous polymerization using dispersed particulate of fluorinated ionomer
US8835547B2 (en) 2008-12-23 2014-09-16 E I Du Pont De Nemours And Company Fluoropolymer particles having a nucleus of fluorinated ionomer
US20100160552A1 (en) * 2008-12-23 2010-06-24 E. I. Du Pont De Nemours And Company Aqueous Polymerization of Fluorinated Monomer Using Hydrogen Containing Branched Fluoroether Surfactant
US20100160584A1 (en) 2008-12-23 2010-06-24 E. I. Du Pont De Nemours And Company Ethylene-Tetrafluoroethylene Carboxylic Acids and Salts
US8329813B2 (en) * 2009-05-08 2012-12-11 E I Du Pont De Nemours And Company Thermal reduction of fluoroether carboxylic acids or salts from fluoropolymer dispersions
CN102558721B (zh) 2010-12-31 2014-08-20 杜邦公司 聚四氟乙烯水分散体
JP5981188B2 (ja) * 2012-03-28 2016-08-31 東レ株式会社 ポリテトラフルオロエチレン含浸糸の製造方法
CN110577611B (zh) * 2019-08-19 2023-02-24 浙江孚诺林化工新材料有限公司 一种涂料用偏氟乙烯聚合物水性分散液的制备方法

Also Published As

Publication number Publication date
US3704272A (en) 1972-11-28
JPS5221532B1 (enExample) 1977-06-11
FR2106536B1 (enExample) 1976-06-04
NL7112691A (enExample) 1972-03-17
DE2145952A1 (de) 1972-03-16
GB1319206A (en) 1973-06-06
FR2106536A1 (enExample) 1972-05-05
CA930090A (en) 1973-07-10

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