| abstract |
An improved polymer and a process for the preparation of impact resistant styrene graft copolymers. Ethylene-propylenetercomponent-rubber is dissolved in styrene, then acrylonitrile is added to a styrene to acrylo-nitrile ratio of 6/1 to 4/1, the polymerization is carried out in the mass until the end of the phase transition, further acrylonitrile, and optionally further styrene, is added and the polymerization is completed in the mass or in suspension. |