METHACRYLIC RESIN COMPOSITION

摘要

PROBLEM TO BE SOLVED: To obtain a resin composition which shows excellence in impact resistance and mold releasability, no corrosion and non-staining of a mold by compounding a specific amount of a compound having a specific melting point and a polymer processing aid with a composition comprising an acrylic multilayer polymer particle and a methacrylic thermoplastic polymer particle. SOLUTION: 0.05 to 0.2 pts.wt. of a compound having a structure represented by formula I, II or III and 0.05 to 10 pts.wt. of a polymer processing aid composed of not less than 60 wt.% (hereinafter %) of a methyl methacrylate unit and not more than 40% of a vinyl monomer unit are compounded with 100 pts.wt. of a resin composition comprising 40 to 95% of an acrylic multilayer polymer particle having a particle diameter of 0.1 to 0.5μm which has an inner layer of a crosslinked elastic polymer layer composed of an alkyl acrylate monomer unit and the like and an outermost layer of a thermoplastic polymer layer composed of an alkyl methacrylate monomer unit and 60 to 5% of a methacrylic thermoplastic polymer particle having a particle diameter of 0.05 to 0.20μm composed of not less than 80% of a methyl methacrylate unit and not more than 20% of a vinyl monomer unit.