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AssigneeDow Global Technologies LLC
InventorsColin Li Pi Shan, Lonnie G. Hazlitt, Yunwa W. Cheung, Benjamin C. Poon, Phillip D. Hustad, Roger L. Kuhlman, Edmund M. Carnahan, Xiahua Qui, Angela N. Taha
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Embodiments of the invention provide a class of ethylene/α-olefin block interpolymers. The ethylene/α-olefin 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/α-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/α-olefin interpolymer has a molecular weight distribution, Mw/Mn, greater than about 1.3.
An ethylene/α-olefin interpolymer comprising polymerized units of ethylene and α-olefin, wherein the interpolymer is a block interpolymer comprising randomly distributed hard segments and soft segments wherein the interpolymer is characterized by an average block index greater than about 0.1 and up to about 1.0 and a molecular weight distribution, Mw/Mn, greater than about 1.3.
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