METHOD FOR PRODUCING alpha-METHYLSTYRENE COPOLYMER

摘要

PROBLEM TO BE SOLVED: To provide a method for producingα-methylstyrene copolymer of which the hue is excellent, the deflection temperature under load is high and also the moldability and mechanical characteristics are excellent. SOLUTION: The method uses one or more sorts of a peroxyketal polymerization initiator having 10 hours of the half-life temperature of 90-102 deg.C (in a benzene solution) together with any one or more sorts of t-butyl peroxyisobutyrate and t-butyl peroxy-2-ethylhexanoate as a polymerization initiator to perform the polymerization.