CA930090A - Concentration of polytetrafluoroethylene aqueous dispersion - Google Patents

Concentration of polytetrafluoroethylene aqueous dispersion

Info

Publication number
CA930090A
CA930090A CA 121837 CA121837A CA930090A CA 930090 A CA930090 A CA 930090A CA 121837 CA121837 CA 121837 CA 121837 A CA121837 A CA 121837A CA 930090 A CA930090 A CA 930090A
Authority
CA
Grant status
Grant
Patent type
Prior art keywords
concentration
aqueous dispersion
polytetrafluoroethylene aqueous
polytetrafluoroethylene
dispersion
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.)
Expired
Application number
CA 121837
Inventor
A. Holmes David
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.)
E I du Pont de Nemours and Co
Original Assignee
E I 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
Grant 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
CA 121837 1970-09-15 1971-08-31 Concentration of polytetrafluoroethylene aqueous dispersion Expired CA930090A (en)

Priority Applications (1)

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

Publications (1)

Publication Number Publication Date
CA930090A true CA930090A (en) 1973-07-10

Family

ID=22107971

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 121837 Expired CA930090A (en) 1970-09-15 1971-08-31 Concentration of polytetrafluoroethylene aqueous dispersion

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
DE2145952B2 (en) 1976-11-25 application
NL7112691A (en) 1972-03-17 application
FR2106536B1 (en) 1976-06-04 grant
US3704272A (en) 1972-11-28 grant

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