FOAMED POLYOLEFIN COMPOSITION

摘要

A foamed polyolefin composition comprising (all percent amounts being by weight): A)50%-90% of a polypropylene component; and B)10%-50% of a copolymer component of ethylene and at least one C3 -C10α-olefin, the copolymer containing from 15% to 50% of ethylene, and optionally minor amounts of a diene; the said amounts of (A) and (B) being referred to the total weight of (A) and (B); said composition having at least one of the following features i) and ii), or both: i)a Polydispersity Index of component (A) of 4 or more; ii)a value of viscosity [η] of the fraction soluble in xylene at room temperature equal to or higher than 3.5 dl/g.