Patent ID: 6558743
Filing Date: 2003-05-06
Classification: B05D,C14C,D06M,D21H,Y10T

Abstract:
A process for preparing a fluoropolymer/substrate composition, comprising:in the case of gaseous fluoromonomer (a) contacting a porous substrate with a solution comprising an initiator dissolved in a solvent; (b) exposing said substrate and said initiator to gaseous fluoromonomer, under polymerization temperature and pressure conditions, wherein the fluoromonomer polymerizes inside the pores of said substrate; or in the case of liquid fluoromonomer (a) preparing a solution comprising initiator and liquid fluoromonomer; (b) contacting a porous substrate with said solution; and (c) polymerizing the liquid fluoromonomer under polymerization temperature and pressure conditions, wherein the fluoromonomer polymerizes inside the pores of said substrate, optionally in the presence of gaseous fluoromonomer; wherein the polymerized fluoromonomer in the substrate partially or completely fills the substrate.