COPOLYMER FOR IMPROVING METHACRYLIC RESIN HEAT RESISTANCE

摘要

A copolymer for improving heat resistance of a methacrylic resin which can achieve preservation of excellent transparency of the methacrylic resin and improvement in heat resistance, and can provide a molded product having excellent appearance, by adding the copolymer to the methacrylic resin, is provided. According to the present invention, a copolymer for improving heat resistance of a methacrylic resin, including: 45 to 85 mass% of an aromatic vinyl monomer unit; 5 to 45 mass% of a (meth)acrylic acid ester monomer unit; and 10 to 20 mass% of an unsaturated dicarboxylic acid anhydride monomer unit; wherein the copolymer has a total light transmittance of 88% or more, the total light transmittance being measured in accordance with ASTM D1003 for a sample with 2 mm-thickness, is provided.