A POLYMETHYLMETHACRYLATE RESIN WITH AN IMPACT MODIFIER CAPSULATED THEREIN AND A PROCESS OF PREPARING FOR THE SAME

摘要

The present invention is related to a PMMA resin with an impact modifier capsulated therein produced by the emulsion polymerizing stages comprises a core of a glass polymer, an intermediate layer of a rubber copolymer grafted to the core and an outer layer of a glass polymer grafted to the intermediate layer, the amount of the core being between 5 to 20 weight %, the amount of the intermediate layer being between 10 to 70 weight % and the outer layer being 25 to 85 weight %. The produced impact modified PMMA resin has the good impact resistance without degradation of the transparency even in case of the thick sheet product.