Patent ID: 7928165

Claim:
A heat-treated elastomeric blend compound, comprising: a continuous phase comprising: a propylene based material having 70-99.9 wt % propylene derived units, 5-25 wt % ethylene derived units, and 0.1-10 wt % diene derived units; and a dispersed phase comprising: a crystalline polypropylene material having at least 96 wt % propylene derived units; and from 1% to 30% by weight, based on the total weight of the blend, of a hydrocarbon resin exhibiting an Mn of from 500 to 1000; and wherein said elastomeric blend compound has a haze % of 30 or less per 100 mil thickness; wherein said propylene based material has an isotactic propylene triad tacticity in the range of from 65 to 95% and a heat of fusion of from 5 J/g to 50 J/g as measured prior to blending with said crystalline polypropylene component, and the continuous elastomeric phase is crosslinked and envelops domains of the dispersed thermoplastic phase; and wherein the elastomeric blend compound is heated to at least the temperature at which 99% of the melting of the crystalline polypropylene component has occurred in a DSC thermogram during or subsequent to crosslinking of the compound.