DE2145952B2 - A method for concentrating aqueous polytetrafluoraethylendispersionen - Google Patents

A method for concentrating aqueous 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
Grant status
Application
Patent type
Prior art keywords
polytetrafluoraethylendispersionen
method
concentrating aqueous
concentrating
aqueous
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)
Other versions
DE2145952A1 (en )
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

Links

Classifications

    • 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
    • C08F6/00Post-polymerisation treatments
    • C08F6/14Treatment of polymer emulsions
    • C08F6/20Concentration
DE19712145952 1970-09-15 1971-09-14 A method for concentrating aqueous polytetrafluoraethylendispersionen Ceased DE2145952B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US7249770 true 1970-09-15 1970-09-15

Publications (2)

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

Family

ID=22107971

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712145952 Ceased DE2145952B2 (en) 1970-09-15 1971-09-14 A method for concentrating aqueous polytetrafluoraethylendispersionen

Country Status (7)

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

Families Citing this family (37)

* 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 (en) * 1995-03-31 2002-11-18 ダイキン工業株式会社 Aqueous polytetrafluoroethylene dispersion composition and use thereof
DE69933545D1 (en) * 1998-02-24 2006-11-23 Asahi Glass Co Ltd Aqueous polytetrafluoroethylene dispersion composition
CN1298782C (en) * 2002-05-20 2007-02-07 大金工业株式会社 Fluorinated resin water dispersion composition and fluorinated water base coating composition
CN100347204C (en) * 2002-11-29 2007-11-07 大金工业株式会社 Method for purification of aqueous fluoropolymer emulsions, purified emulsions, and fluorine-containing finished articles
DE602004004615T2 (en) * 2003-10-21 2007-11-08 Solvay Solexis S.P.A. A process for preparing fluoropolymer dispersions
EP1584632B1 (en) 2004-01-14 2012-03-21 Solvay Specialty Polymers Italy S.p.A. Process for preparing fluoropolymer dispersions
US7790041B2 (en) * 2004-08-11 2010-09-07 E.I. Du Pont De Nemours And Company Removing fluorosurfactant from aqueous fluoropolymer dispersions
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
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
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
EP1676868B1 (en) 2004-12-30 2012-02-15 Solvay Solexis S.p.A. Process for preparing fluoropolymer dispersions
DE602005016646D1 (en) * 2004-12-30 2009-10-29 Solvay Solexis Spa Manufacturing process for fluoropolymer dispersions
US20060183842A1 (en) * 2005-02-10 2006-08-17 Johnson David W Fluoropolymer dispersions with reduced fluorosurfactant content and high shear stability
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
US20060178472A1 (en) * 2005-02-10 2006-08-10 Johnson David W Process for producing low fluorosurfactant-containing aqueous fluoropolymer dispersions with controlled pH
EP1908791A4 (en) * 2005-04-13 2008-11-26 Daikin Ind Ltd Process for producing aqueous fluoropolymer dispersion
EP1897902A4 (en) * 2005-04-13 2008-10-29 Daikin Ind Ltd Process for producing aqueous fluoropolymer dispersion
EP1714986B1 (en) * 2005-04-20 2007-11-21 Solvay Solexis S.p.A. Process for preparing fluoropolymer dispersions
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
EP1746130B1 (en) * 2005-07-21 2011-08-10 Solvay Solexis S.p.A. Fine fluoropolymer powders
US20070023360A1 (en) * 2005-08-01 2007-02-01 Noelke Charles J Removing fluorosurfactant from aqueous fluoropolymer dispersion using sorbent pouches
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
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
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
US8835547B2 (en) 2008-12-23 2014-09-16 E I Du Pont De Nemours And Company Fluoropolymer particles having a nucleus of fluorinated ionomer
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
US20100160584A1 (en) * 2008-12-23 2010-06-24 E. I. Du Pont De Nemours And Company Ethylene-Tetrafluoroethylene Carboxylic Acids and Salts
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
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
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 (en) 2010-12-31 2014-08-20 杜邦公司 Novel polytetrafluoroethylene aqueous dispersion
JP5981188B2 (en) * 2012-03-28 2016-08-31 東レ株式会社 The method of manufacturing polytetrafluoroethylene impregnated yarn

Also Published As

Publication number Publication date Type
JPS5221532B1 (en) 1977-06-11 grant
GB1319206A (en) 1973-06-06 application
DE2145952A1 (en) 1972-03-16 application
CA930090A1 (en) grant
FR2106536A1 (en) 1972-05-05 application
CA930090A (en) 1973-07-10 grant
NL7112691A (en) 1972-03-17 application
FR2106536B1 (en) 1976-06-04 grant
US3704272A (en) 1972-11-28 grant

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