Patent ID: 6867260

Claim:
An uncrosslinked blend composition comprising a dispersed phase of a crystalline polymer component in a continuous phase of a crystallizable polymer component wherein: a) the crystalline polymer component is dispersed in phases less than 3 μm×3 μm×100 μm in size, b) the blend composition has greater than 65% propylene units by weight, c) the blend comprises greater than 1% but less than 40% by weight, based on the total weight of the blend, of a crystalline first polymer component and less than 99% but greater than 60% by weight, based on the total weight of the blend, of a crystallizable second polymer component, such crystallinity being due to stereoregular polymerized propylene units, d) both first and second polymer component contain stereoregular polypropylene of similar tacticity, and e) the blend has a tensile elongation greater than 650%, wherein the first polymer component has a melting point by DSC equal to or above 115° C., and wherein the second polymer component has a melting point by DSC equal to or less than 100° C.