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:
Dec. 10, 2024
Filed:
May. 04, 2023
Applicant:
Exxonmobil Chemical Patents Inc., Baytown, TX (US);
Inventors:
Jian Yang, Houston, TX (US);
Jo Ann M. Canich, Houston, TX (US);
Hua Zhou, Missouri City, TX (US);
Jennifer L Rapp, Houston, TX (US);
Assignee:
ExxonMobil Chemical Patents Inc., Baytown, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F 17/00 (2006.01); C07C 2/30 (2006.01); C07C 2/32 (2006.01); C07C 17/00 (2006.01); C08F 4/659 (2006.01); C08F 4/6592 (2006.01); C08F 210/16 (2006.01);
U.S. Cl.
CPC ...
C08F 210/16 (2013.01); C07C 2/30 (2013.01); C07C 2/32 (2013.01); C07C 17/00 (2013.01); C08F 4/65908 (2013.01); C08F 4/65912 (2013.01); C08F 4/65922 (2013.01);
Abstract
A process for making a poly alpha-olefin (PAO) having a relatively high vinylidene content (or combined vinylidene and tri-substituted vinylene content) and a relatively low vinyl and/or di-substituted vinylene content, as well as a relatively low molecular weight. The process includes: contacting a feed containing a C-Calpha-olefin with a catalyst system comprising activator and a bis-cyclopentadienyl metallocene compound, typically a cyclopentadienyl-benzindenyl group 4 transition metal compound.