Patent ID: 6994915
Filing Date: 2006-02-07
Classification: C08J,Y10S,Y10T

Abstract:
1. A biaxially oriented polypropylene film (BOPP) wherein at least one layer comprises a propylene polymer containing at least 0.8% by weight of ethylene and, optionally, one or more C 4 -C 10 α-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 C 4 -C 10 α-olefins, said polymer or polymer composition having the following features: I) a melting temperature of 155° C. or higher; and II) a xylene soluble fraction at room temperature (about 25° C.) lower than 3% by weight, and a value of the ratio of the polymer fraction collected in the temperature range from 25° C. to 95° C. to the xylene soluble fraction at room temperature higher than 8 wt %/wt %.