PVC IMPACT MODIFIER OPAQUE HIGH-IMPACT MBS AND PREPARATION METHOD THEREFOR

摘要

Provided are a PVC impact modifier opaque high-impact MBS and a preparation method therefor, relating to the technical field of PVC additive production and preparation. Calculated by mass fractions, the provided MBS is composed of the following mass fractions of substances: 80%-95% core layer, 4%-20% shell layer, and 0.001%-0.05% protective colloid; the core layer is butadiene and styrene polymer; the shell layer is one of or a copolymer of two or three of styrene, acrylate, and methacrylate; and the protective colloid comprises one of polyvinyl alcohol, gelatin and hydroxypropyl methyl cellulose, or a complex of two or three of the three. The problems of the impact strength of existing MBS products not being high and the difficulty of coagulation or spraying in the post-treatment procedure are solved.