Patent ID: 6521730
Filing Date: 2003-02-18
Classification: A62D,C08F

Abstract:
Hydrophilic fluoropolymers obtained by radical polymerization, in a precipitating medium, of a mixture of monomers comprised, by weight, of:(a) 25 to 49% of at least one nonionic hydrophilic monomer selected from the group consisting of N-vinyl-2-pyrrolidone, derivative of N-vinyl-2-pyrrolidone, acrylamide, methacrylamide, and an N-substituted compound having the formula of CH2&boxH;CR1â€”CONR2R3 wherein R1 represents a hydrogen atom or a methyl radical; and R2 and R3 are each independently a hydrogen atom or an alkyl or hydroxyalkyl radical comprising from 1 to 3 carbon atoms; (b) 20 to 75% of at least one monomer comprising a perfluoroalkyl radical; and (c) 5 to 75% of one or more ionic or ionizable hydrophilic monomers.