Ethylene/α-olefins block interpolymers

Details Ethylene/α-olefins block interpolymers Ethylene/α-olefins block interpolymers

2006-03-15

2009-10-27

Zemel, Irina S (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S191000, C525S232000, C525S241000

Reexamination Certificate

active

07608668

ABSTRACT:
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.

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Arriola et al., “Catalytic Production of Olefin Block Copolymers Via Chain Shuttling Polymerization”, 312 Science (May 5, 2006), pp. 714-719.

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