| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat-resistant styrenic resin composition excellent in heat resistance, mechanical strength, appearance and moldability and to provide a non-foamed and foamed extruded sheet and a molded product formed by using the heat-resistant styrenic resin composition.SOLUTION: There is provided a heat-resistant styrenic resin composition which comprises: a predetermined amount of a copolymer resin (a) which is a styrene-methacrylic acid-methyl methacrylate copolymer; a predetermined amount of a rubber modified styrenic resin (b); and a predetermined amount of a copolymer resin (c) which is a styrene-methacrylic acid copolymer, where the copolymer resin (a) contains a styrene monomer unit, a methacrylic acid monomer unit and a methyl methacrylate monomer unit in a predetermined ratio, the rubber modified styrenic resin (b) has a predetermined content of rubber and a predetermined particle diameter of rubber, and the heat-resistant styrenic resin composition has a vicat softening temperature of 110°C or more, and there are provided a non-foamed and foamed extruded sheet and molded product formed by using the resin composition. |
