A method for preparing resins that have excellent shock resistance, flexion modules and heat deformation characteristics. (Machine-translation by Google Translate, not legally binding)

摘要

A method of preparing resins that have excellent shock resistance, flexural modulus, and heat deformation characteristics, particularly at low temperatures, which comprises preparing a mixture consisting essentially of: (A) a polymer matrix prepared from per at least 90 weight percent styrene, the other monomers being any other ethylenically unsaturated copolymerizable monomers, said polymers having a number average molecular weight of about 50,000 to 500,000; and (B) graduated block copolymers of type AB in which A represents polymerized styrene and B represents polymerized butadiene, the number average molecular weight of said block copolymers being at least 100,000, said graduated block copolymers having two main temperatures of glass transition between -90ºC approximately and 90ºC approximately; component (B) being dispersed in component (A) in the form of micelles having maximum dimensions in the range of 0.2 to 5 microns, and the total units of styrene in components (A) and (B) of 75 to 90 percent by weight of the total units in said components. (Machine-translation by Google Translate, not legally binding)