Elastoplastic compositions and process for preparing them

摘要

Elastoplastic compositions comprising a continuous crystalline polyolefin phase and at least two discrete phases dispersed in the polyolefin phase, of which one consists of a dynamically cured EPDM rubber while the other of an amorphous and thermoplastic styrene polymer, in which at least 80% of the dispersed particles has a maximum size preferably below 5 mu m. The compositions are prepared by masticating the component mixtures, under rubber dynamic curing conditions.