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US 6,939,919 B2Granted
Polyethylene rich/polypropylene blends and their uses
AssigneeDow Global Technologies LLC
InventorsLi-Min Tau, William R. Van Volkenburgh, Wendy D. Hoenig, Pak-Wing S. Chum
Life of this patent
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Abstract
The present invention includes a blend composition comprising at least one coupled propylene polymer and at least 55 weight percent of at least one ethylene polymer, based on the total weight of the coupled propylene polymer and the ethylene polymer. The invention also includes methods for making the coupled propylene polymer and methods for making the blend composition. The present invention further includes films made from the blend composition.
Claims10
A blend composition comprising:
- (a) at least one propylene polymer having a melt strength of at least 20 cN;
- and
- (b) greater than 55% by weight based on the combined weight of component (a) and (b), of at least one ethylene polymer having a density of from 0.90-0.94 g/cm3 and having a melt index (as measured in accordance with ASTM D 1238, at a tamperature of 190° C. under a weight of 2.16 KG) of at least 0.1″ g/10, min.
Dependencies are inferred from the claim text.