Patent ID: 8202941
Filing Date: 2012-06-19
Classification: C08J,C08L

Abstract:
1. A heat-shrinkable film comprising: at least one layer comprising: (i) at least one propylene-based polymer comprising 60 wt % to 98 wt % propylene derived units and 2 wt % to 40 wt % one or more other alpha olefins, the propylene-based polymer having: a triad tacticity of 70% or more, a heat of fusion of less than 80 J/g, a weight average molecular weight (Mw) as measured by GPC of from 70,000 to 250,000, and (ii) at least one polyolefinic thermoplastic resin, wherein the at least one polyolefinic thermoplastic resin comprises a polypropylene-based polymer having: a heat of fusion of more than 80 J/g, a melt flow rate of less than 20 g/10 min; and a weight average molecular weight (Mw) as measured by GPC of from 90,000 to 500,000 g/mol; and (iii) at least one hydrocarbon resin; wherein the propylene-based polymer is present in an amount from 70 to 90 wt %, the polyolefinic thermoplastic resin is present in an amount from 5 to 20 wt %, and the hydrocarbon resin is present in an amount of from 1 to 20 wt % based on the total weight of the film.