Patent ID: 6362245
Filing Date: 2002-03-26
Classification: B01J,C08F,C08J

Abstract:
A porous copolymer particle comprising a particle of a copolymer comprising (i) from 5 to 50 wt % of a structural unit derived from a monomer (A) selected from N-vinylcarboxylic acid amide represented by formula (I): wherein R1 represents a hydrogen atom or a methyl group, and R2 represents a hydrogen atom, a C1-C8 alkyl group, a phenyl group or a phenyl group substituted with a methyl group or an ethyl group and (ii) from 50 to 95 wt % of a structural unit derived from a copolymerizable monomer (B) which contains from 55 to 95 wt % of a crosslinking monomer based on the total weight of (A) and (B), or a particle of a modified product of the copolymer, and the particle having a particle size of from 0.1 to 2,000 &mgr;m, the particle being prepared by suspension polymerization in an aqueous medium containing a dispersion stabilizer.