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:
Feb. 23, 2021
Filed:
Oct. 05, 2018
Exxonmobil Chemical Patents Inc., Baytown, TX (US);
Matthew W. Holtcamp, Huffman, TX (US);
Subramaniam Kuppuswamy, Mont Belvieu, TX (US);
Matthew S. Bedoya, Humble, TX (US);
ExxonMobil Chemical Patents Inc., Baytown, TX (US);
Abstract
The present disclosure provides iron-containing catalyst compounds having a carbene ligand. Catalyst compounds of the present disclosure can be asymmetric, having an electron donating side of the catalyst and an electron deficient side of the catalyst. In some embodiments, catalysts of the present disclosure provide catalyst productivity values of 500 gPgcat−1hr−1 or greater and polyolefins, such as polyethylene copolymers, having comonomer content of 8 wt % or greater, a g' vis value of 0.95 or greater, internal unsaturation content greater than 0.2 unsaturations per 1,000 carbons, broad orthogonal composition distribution, an Mn of 20,000 g/mol or greater, an Mw of 200,000 g/mol or greater, and an Mz/Mw from 2 to 5 or greater.