| 摘要 |
Embodiments of the invention provide a class of ethylene/alpha-olefEn block interpolymers. The ethylene/alpha-olefEn interpolymers are characterized by an average block index, ABI, which is greater than zero and up to about 1. 0 and a molecular weight distribution, Mw/Mn, greater than about 1.3. Preferably, the block index is from about 0.2 to about 1. In addition or alternatively, the block ethylene/alpha-olefin interpolymer is characterized by having at least one fraction obtained by Temperature Rising Elution Fractionation ("TREF"), wherein the fraction has a block index greater than about 0.3 and up to about 1.0 and the ethylene/alpha-olefin interpolymer has a molecular weight distribution, M w/Mn, greater than about 1.3.
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