CROSSLINKED POLYMER, FINE POLYMER PARTICLE, AND PROCESS FOR PRODUCING THESE

摘要

A crosslinked polymer or fine polymer particle which can be obtained by the copolymerization of a macromonomer having at least a polyethylene glycol segment, a comonomer having a tertiary amine group in a side chain, and a crosslinking agent. The crosslinked polymer can be provided as nano- or micro-spheres. It can be provided also as a composite comprising the nano- or micro-spheres and ultrafine particles of a metal or semiconductor fixed or encapsulated therein as cores.