IMPACT-RESISTANT POLYOLEFIN COMPOSITIONS

摘要

Polyolefin compositions comprising (percent by weight) A) 60%-95% of a crystalline polypropylene component having a Melt Flow Rate (MFR A) value of from 2.5 to 50 g/10 min. and containing from 20% to 80% of a fraction A I) having MFR I from 0.5 to 8 g/10 min., and from 20% to 80% of a fraction A II); B) 5%-40% of 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) ; the ratio MFR A/MFR I being from 2 to 25; the percentages of A) and B) being referred to the sum of A) and B), and the percentages of A I) a nd A II) being referred to the sum of A I) and A II).