Abstract: Provided are films wherein at least one layer of the film comprises a first polymer component and a second polymer component. The first polymer component comprises propylene-derived units and ethylene-derived units and/or a C4 to C20 alpha-olefin. The second polymer component comprises ethylene-derived units and a units derived from a co-polymerizable ethylenically unsaturated ester. The films are particularly useful in stretch hood applications.
Abstract: A low viscosity poly(alpha-olefin) (PAO) is produced by contacting one or more C3 to C24 alpha-olefins with an unbridged, substituted bis-cyclopentadienyl transition metal compound, a non-coordinating anion activator, and an alkyl-aluminum compound. The molar ratio of transition metal compound to activator is 10:1 to 0.1:1 and the molar ratio of alkyl aluminum compound to transition metal compound is 1:4 to 4000:1. The transition metal compound has either (a) at least one non-isoolefin substitution on both cyclopentadienyl rings, or (b) at least two substitutions on at least one cyclopentadienyl ring. The PAO is comprised of at least 50 mole % of C3 to C24 alpha-olefins, has a Mw/Mn between 1 and 1.4, and a kinematic viscosity at 100° C. of 20 cSt or less.
Type:
Grant
Filed:
July 19, 2006
Date of Patent:
June 26, 2012
Assignee:
ExxonMobil Chemical Patents Inc.
Inventors:
Margaret May-Som Wu, Catalina L. Coker, John F. Walzer, Jr., Peijun Jiang