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:
Mar. 04, 2014
Filed:
Mar. 19, 2012
Bruce A. Harrington, Houston, TX (US);
Abhimanyu O. Patil, Westfield, NJ (US);
Donna J. Crowther, Seabrook, TX (US);
Phillip T. Matsunaga, Houston, TX (US);
Kevin B. Stavens, Houston, TX (US);
Catalina L. Coker, Baytown, TX (US);
Bruce A. Harrington, Houston, TX (US);
Abhimanyu O. Patil, Westfield, NJ (US);
Donna J. Crowther, Seabrook, TX (US);
Phillip T. Matsunaga, Houston, TX (US);
Kevin B. Stavens, Houston, TX (US);
Catalina L. Coker, Baytown, TX (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
This invention is directed to new mono-cyclopentadienyl ('mono-Cp') metallocene catalyst compounds useful for producing high viscosity PAOs with narrow molecular weight distribution and good shear stability. Specifically, this invention relates to a group of bridged mono-Cp catalysts wherein, in an embodiment of the invention, the aromatic ring structure is substituted with: 1) at least one phenyl group, 2) at least one alkyl group, and 3) at least one other group, such as a hydrocarbyl group, a heteroatom, or a heteroatom-containing group.