Polypropylene compositions having good transparency and improved impact resistance.

摘要

Disclosed is a polymer composition comprising: A) from 70 to 98 parts by weight of a crystalline propylene homopolymer, or a crystalline random copolymer of propylene with ethylene and/or C4-C10 alpha -olefins, containing from 0.5 to 10% by weight of ethylene and/or alpha -olefins (Fraction A); and B) from 2 to 30 parts by weight of elastomeric copolymer of ethylene with one or more C4-C10 alpha -olefins, containing from 60 to 85% by weight of ethylene, and partially soluble in xylene at 25 DEG C (Fraction B); wherein said composition has an intrinsic viscosity value in tetrahydronaphthalene at 135 DEG C of the fraction soluble in xylene at 25 DEG C ranging from 0.8 to 1.1 dl/g.