A propylene block copolymer comprising a matrix phase and a dispersed phase dispersed in said matrix phase, said matrix phase comprising (a) polypropylene; said dispersed phase having an average particle diameter of from 0.1 to 5 .mu.m; and said dispersed phase comprising an outer layer ...http://www.google.es/patents/US5703172?utm_source=gb-gplus-sharePatente US5703172 - Propylene block copolymer and process for producing the same
Propylene block copolymer and process for producing the same
