PROCESS FOR REDUCING FLUOROSURFACTANT CONTENT OF FLUOROPOLYMER DISPERSIONS USING ANIONIC SURFACTANT-TREATED ANION EXCHANGE RESIN
摘要
A process for reducing fluorosurfactant content of a stabilized fluorosurfactant-containing aqueous fluoropolymer dispersion. The process includes providing a fixed bed of anion exchange resin having anion exchange groups with counter ions. The anion exchange resin is treated to replace at least some the counter ions with counter ions of non-fluorinated anionic surfactant. The stabilized fluorosurfactant-containing aqueous fluoropolymer dispersion is passed through the treated fixed bed of anion exchange resin.
申请公布号
WO2007142882(A3)
申请公布日期
2008.03.06
申请号
WO2007US12503
申请日期
2007.05.24
申请人
E. I. DU PONT DE NEMOURS AND COMPANY;TETER, KENNETH, SCOTT;JOHNSON, DAVID, WILLIAM