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. 22, 2022
Filed:
Feb. 11, 2020
Exxonmobil Chemical Patents Inc., Baytown, TX (US);
Georgy P. Goryunov, Moscow, RU;
Mikhail I. Sharikov, Moscow, RU;
Vladislav A. Popov, Moscow, RU;
Dmitry V. Uborsky, Moscow, RU;
Alexander Z. Voskoboynikov, Moscow, RU;
John R. Hagadorn, Houston, TX (US);
Michelle E. Titone, Houston, TX (US);
Alex E. Carpenter, Houston, TX (US);
Catherine A. Faler, Houston, TX (US);
Jo Ann M. Canich, Houston, TX (US);
ExxonMobil Chemical Patents Inc., Baytown, TX (US);
Abstract
This invention relates to transition metal complexes of a dianionic, tridentate ligand that features a central neutral heterocyclic Lewis base and two phenolate donors, where the tridentate ligand coordinates to the metal center to form two eight-membered rings. Preferably the bis(phenolate) complexes are represented by Formula (I): where M, L, X, m, n, E, E', Q, R, R, R, R, R, R, R, R, A, A, are as defined herein, where AQAare part of a heterocyclic Lewis base containing 4 to 40 non-hydrogen atoms that links Ato Avia a 3-atom bridge with Q being the central atom of the 3-atom bridge.