Method for the preparation of fluoropolymer powdered materials

Details Method for the preparation of fluoropolymer powdered materials Method for the preparation of fluoropolymer powdered materials

C - Chemistry, Metallurgy

08

J

C08J 3/12 (2006.01) F26B 5/06 (2006.01)

Patent

CA 2693304

A method for the preparation of a modified fluoropolymer powdered material is disclosed. A suspension of solid fluoropolymer particles together with PTFE particles in an aqueous carrier, is frozen and the frozen carrier is then removed by sublimation at sub-atmospheric pressure to produce a dry powder of modified fluoropolymer particles.

L'invention porte sur un procédé de préparation d'une matière pulvérulente de polymère fluoré modifié. Une suspension de particules solides de polymère fluoré conjointement avec des particules de PTFE dans un support aqueux est congelée, et le support congelé est ensuite éliminé par sublimation à une pression sub-atmosphérique pour produire une poudre sèche de particules de polymère fluoré modifié.

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