Patent ID: 6800710
Filing Date: 2004-10-05
Classification: B29C,C08F,C08J,C08L

Abstract:
A polyolefin sheet for thermoforming wherein at least one layer comprises a propylene polymer containing at least 0.8% by weight of ethylene and, optionally, one or more C4-C10 &agr;-olefins, or a propylene polymer composition containing at least 0.8% by weight of one or more comonomers selected from the group consisting of ethylene and C4-C10 &agr;-olefins, said polymer or polymer composition having the following features:I) a melting temperature of 155Â° C. or higher; and II) a xylene soluble fraction at room temperature (about 25Â° C.) lower than 4% by weight, and a value of the ratio of the polymer fraction collected by TREF at a temperature from 25Â° C. to 95Â° C. to the xylene soluble fraction at room temperature higher than 8 wt %/wt %.