ORGANIC PIGMENT FOR COLORING SYNDIOTACTIC POLYSTYRENE (SPS) STRUCTURE, COLORANT FOR COLORING SPS, AND STYRENIC RESIN COMPOSITION

摘要

At least one organic pigment for coloring polystyrene (SPS) a syndiotactic, selected among (a) metal-containing azo pigments, (b) copper phthalocyanine pigments, (c) perylene pigments, (d) threne pigments, and (e) quinacridone pigments; a colorant for coloring SPS, comprising the above pigment; a colorant for coloring SPS, comprising the above pigment and an inorganic pigment; and a styrenic resin composition comprising a blend of SPS with at least one member selected among rubbery elastomers, thermoplastic resins other than SPS, inorganic fillers and the above colorant for coloring. The colorant for coloring SPS and the styrenic resin composition do not cause mold staining due to the bleeding of the colorant and can provide products having excellent quality stability free from migration of colors while maintaining the excellent heat resistance and other properties inherent in SPS.