COPOLYMER FOR IMPROVING METHACRYLIC RESIN HEAT RESISTANCE

摘要

Provided is a copolymer for improving methacrylic resin heat resistance which when blended with methacrylic resin improves heat resistance and makes it possible to obtain molded articles with excellent outer appearance without compromising the excellent transparency of the methacrylic resin. This copolymer for improving methacrylic resin heat resistance comprises 45-85 mass% aromatic vinyl monomer units 5-45 mass% (meth)acrylic acid ester monomer units and 10-20 mass% unsaturated dicarboxylic acid anhydride monomer units wherein the total light transmittance through a 2mm thickness measured on the basis of ASTM D1003 is 88% or greater.