Impact-resistant polyolefin compositions

摘要

Polyolefin compositions comprising (percent by weight): 1) 55%-90% of a crystalline propylene homopolymer or copolymer containing up to 15% of ethylene and/or C₄-C₁₀ alpha-olefin(s); 2) 10%- 45% of a blend of a copolymer of propylene with more than 15% up to 40% of ethylene (copolymer (a)), and a copolymer of ethylene with one or more C₄-C₁₀ alpha-olefin(s) containing from 10% to 40% of said C₄-C₁₀ alpha-olefin(s) (copolymer (b)), wherein the weight ratio (a)/(b) is from 1/4 to 4/1.