The monomer blend which is included in ratio of the multi functionality monomer 1 - 100 weight sections the building a bridge (

摘要

PROBLEM TO BE SOLVED: To provide a crosslinked (meth)acrylic polymer particle capable of sufficiently suppressing generation of decomposition products even if it is molded under a high temperature and/or long residence time conditions.;SOLUTION: When a mixture comprising a (meth)acrylic monomer and a polyfunctional monomer is emulsification polymerized in the presence of a specific amount of a specific phosphate salt and a specific amount of a specific polyvalent mercaptan compound, the crosslinked (meth)acrylic polymer particle is obtained.;COPYRIGHT: (C)2009,JPO&INPIT