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:
Jun. 11, 2013
Filed:
Oct. 24, 2003
Baiyi Zhao, Kingwood, TX (US);
Smita Kacker, Houston, TX (US);
JO Ann Marie Canich, Houston, TX (US);
Baiyi Zhao, Kingwood, TX (US);
Smita Kacker, Houston, TX (US);
Jo Ann Marie Canich, Houston, TX (US);
ExxonMobil Chemical Patents Inc., Houstson, TX (US);
Abstract
This invention relates to a series of novel late transition metal catalysts for olefin oligomerization, the catalysts demonstrating high activity and selectivity for linear α-olefins. The catalysts contain a Group-8, -9, or -10 transition metal, M, excluding palladium; an ancillary ligand comprising: a terminal amine comprising two independently selected hydrocarbyl radicals, Rand R; a terminal phosphine comprising two independently selected hydrocarbyl radicals, Rand R; and a hydrocarbyl bridge, Y, comprising a backbone wherein the hydrocarbyl bridge connects between the terminal amine and the terminal phosphine and wherein the backbone comprises a chain that is four or more carbon atoms long; and an abstractable ligand, X. For example this invention relates to a composition of matter with the following formula: wherein M, R, R, R, and R, Y, and X are as defined above.