METHOD FOR PREPARING HEAT RESISTANCE SAN RESIN, AND METHOD FOR PREPARING HEAT RESISTANCE RESIN HAVING WHITE COLOR PROPERTY AND HEAT RESISTANCE

摘要

The present invention relates to a method for producing a heat resistant SAN resin, and a method for producing a heat resistant resin having excellent whiteness and heat resistance. According to the present invention, provided is a method for producing a heat resistant resin having excellent whiteness and heat resistance, which prevents discoloration by heat of the heat resistant resin and the decrease of the molecular weight and Tg due to the oligomer generation by mixing a polymer-type phenol antioxidant, controlling the pH of a latex, and condensing the latex, when condensing a heat resistant SAN copolymer latex capable of being used in producing a heat resistant ABS copolymer.