Patent ID: 6441094
Filing Date: 2002-08-27
Classification: C08F,C08L

Abstract:
Polyolefin compositions comprising (percent by weight):A) 60%-95% of a crystalline polypropylene component having a Melt Flow Rate (MFRA) value (measured at 230Â° C., with 2.16 Kg load) of from 2.5 to 50 g/10 min. and containing from 20% to 80% of a fraction AI) having a Melt Flow Rate (MFRI) value (measured at 230Â° C., with 2.16 Kg load) of from 0.5 to 8 g/10 min., and from 20% to 80% of a fraction AII); B) 5%-40% of a copolymer of ethylene with one or more C4-C10 &agr;-olefin(s) containing from 10 to 40% of said C4-C10 &agr;-olefin(s); said fractions AI) and AII) being independently selected from propylene homopolymers and random copolymers of propylene containing up to 15% of ethylene and/or C4-C10 &agr;-olefin(s); the ratio MFRA/MFRI being from 2 to 25; the percentages of A) and B) being referred to the sum of A) and B), and the percentages of AI) and AII) being referred to the sum of AI) and AII).