HEAT-RESISTANT SAN RESIN, METHOD OF PREPARING THE SAME AND MOLDED PRODUCT USING THE SAME

摘要

The present disclosure relates to a heat-resistant SAN resin, a method of preparing the same, and a heat-resistant ABS resin composition including the same, and more particularly, to a heat-resistant SAN resin characterized by polymerizing 100 parts by weight of a monomer mixture including 60 to 80 wt% of a heat-resistant aromatic vinyl monomer and 20 to 40 wt% of a vinyl cyanide monomer, wherein the heat-resistant resin has a weight average molecular weight ranging from 100,000 to 150,000 g/mol, a glass transition temperature of 125°C or higher, and a polymerization conversion rate of 65% or higher. According to the present disclosure, there is an effect of providing a heat-resistant SAN resin and a method of preparing the same, wherein the heat-resistant SAN resin improves polymerization conversion rate while maintaining heat resistance and molecular weight, and providing of a heat-resistant ABS resin composition with excellent heat resistance, excellent impact resistance, excellent stiffness and excellent mold deposit when the ABS resin composition is prepared by including the SAN resin.