Propylene/Alpha-olefins block interpolymers

Embodiments of the invention provide a class of propylene/a-olefin block interpolymers. The propylene/a-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...

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Main Authors HUSTAD, PHILLIP D, KUHLMAN, ROGER L, TAHA, ANGELA N, QIU, XIAOHUA, LI PI SHAN, COLIN, HAZLITT, LONNIE G, POON, BENJAMIN C, CARNAHAN, EDMUND M, CHEUNG, YUNWA WILSON
Format Patent
LanguageEnglish
Published 27.01.2010
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:Embodiments of the invention provide a class of propylene/a-olefin block interpolymers. The propylene/a-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 propylene/a-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 propylene/a-olefin interpolymer has a molecular weight distribution, Mw/Mn, greater than about 1.3.
Bibliography:Application Number: ZA20080007716