TRANSPARENT IMPACT RESIN PREPARED BY POLYMERIZING ALKENYL AROMATIC MONOMER IN PRESENCE OF BLOCK POLYMER OF ALKENYL AROMATIC AND DIENE MONOMERS

摘要

Styrene is polymerized employing a free radical initiator in the presence of a styrene-diene block copolymer of the AB or AB(BA)n configuration to provide a polymer containing from about 15 to 30 weight percent diene units polymerized therein. The polymer contains polydiene domains in the form of rods and spheres having diameters of 70 nanometers or less. 28,195A-F -16-