The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 09, 2016
Filed:
May. 21, 2012
Margaret May-som Wu, Skillman, NJ (US);
Catalina L. Coker, Baytown, TX (US);
John F. Walzer, Jr., Seabrook, TX (US);
Peijun Jiang, League City, TX (US);
Margaret May-Som Wu, Skillman, NJ (US);
Catalina L. Coker, Baytown, TX (US);
John F. Walzer, Jr., Seabrook, TX (US);
Peijun Jiang, League City, TX (US);
ExxonMobil Chemical Patents Inc., Baytown, TX (US);
Abstract
A low viscosity poly(apha-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 and has a kinematic viscosity at 100° C. of 20 cSt or less.