Patent ID: 8362184
Filing Date: 2013-01-29
Classification: C08F

Abstract:
1. A composition comprising at least one butene/α-olefin interpolymer comprising two or more substantially homogeneous intramolecular blocks comprising differing chemical or physical properties and having a difference in mole percent α-olefin content, said intramolecular blocks characterized by possessing a most probable molecular weight distribution, wherein the ethylene/α-olefin block interpolymer is characterized by a molecular weight distribution, M w /M n , in the range of from about 1.4 to about 2.8 and by an average block index greater than zero and up to about 1.0; and, wherein the butene/α-olefin block interpolymer is mesophase separated; and, wherein the block interpolymer has a molecular weight of from 10,000 g/mole to 300,000 g/mole, the difference in mole percent α-olefin content between the blocks is greater than 8.6 and a smallest domain size dimension of from 40 nm to 300 nm.