Biaxially oriented polypropylene films

Details Biaxially oriented polypropylene films Biaxially oriented polypropylene films

2006-02-07

2006-02-07

Kruer, Kevin R. (Department: 1773)

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

C428S910000, C525S191000, C525S240000, C526S348000, C526S348100

Reexamination Certificate

active

06994915

ABSTRACT:
Biaxially oriented polypropylene films (BOPP) having at least one layer of a propylene polymer containing at least 0.8% by weight of ethylene and, optionally, one or more C4-C10α-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-C10α-olefins, and havingI) a melting temperature of 155° C. or higher; andII) a xylene soluble fraction at room temperature lower than 3% by weight, and a value of the ratio of the polymer fraction collected at the temperature range from 25° C. to 95° C. (by TREF) to the said xylene soluble fraction higher than 8.

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