Aqueous dispersions of fluoropolymers

Details Aqueous dispersions of fluoropolymers Aqueous dispersions of fluoropolymers

C - Chemistry, Metallurgy

08

F

C08F 14/18 (2006.01) C08F 6/16 (2006.01) C08J 3/03 (2006.01) C09D 127/12 (2006.01) C09D 127/18 (2006.01)

Patent

CA 2354138

Fluorine-containing emulsifiers can be removed from fluoropolymer dispersions by adding to the dispersion a nonionic emulsifier, removing the fluorine-containing emulsifier by contact with an anion exchanger and separating the dispersion from the anion exchanger. The resulting dispersions can be concentrated and used for coating applications.

Procédé permettant de séparer des émulsifiants contenant du fluor de dispersions de fluoropolymères, qui consiste à mélanger la dispersion avec un émulsifiant non ionique, à séparer l'émulsifiant contenant du fluor par mise en contact de ladite dispersion avec un échangeur d'anions et à séparer la dispersion de l'échangeur d'anions. Les dispersions obtenues peuvent être concentrées et utilisées pour des applications de revêtement.

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