Patent ID: 11866573
Assignee: TECHNO-UMG CO., LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A thermoplastic resin composition, comprising:
a rubber-reinforced vinyl-based resin comprising a rubbery part derived from an acrylic rubbery polymer having a structural unit derived from an alkyl acrylate ester compound and a resin part having a structural unit derived from styrene and a structural unit derived from acrylonitrile;
a methacrylic resin comprising a (co)polymer having no structural unit derived from α-methyl styrene, that is at least one of a polymethyl methacrylate and a styrene/acrylonitrile/methyl methacrylate copolymer; and
an α-methyl styrene-based resin composed of a (co)polymer having no structural unit derived from an alkyl (meth)acrylate ester compound, that is a copolymer of α-methyl styrene and acrylonitrile;
wherein the styrene/acrylonitrile/methyl methacrylate copolymer comprises 15% to 35% by mass of a structural unit derived from styrene, 4% to 25% by mass of a structural unit derived from acrylonitrile, and 60% to 81% by mass of a structural unit derived from methyl methacrylate, based on 100% by mass of a total content of these structural units, and
wherein content ratios of the rubber-reinforced vinyl-based resin, the methacrylic resin, and the α-methyl styrene-based resin are respectively 20% to 55% by mass, 20% to 60% by mass, and 10% to 45% by mass based on 100% by mass of a total of these components.