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. 23, 2025
Filed:
Oct. 28, 2020
China Petroleum & Chemical Corporation, Beijing, CN;
Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation, Beijing, CN;
Shuliang Han, Beijing, CN;
Haokun Li, Beijing, CN;
Wenbo Song, Beijing, CN;
Zhao Jin, Beijing, CN;
Lusheng Wang, Beijing, CN;
Yuanyuan Fang, Beijing, CN;
Abstract
Disclosed is a biphenol metal complex. The structure thereof is as represented by formula I, wherein Rand R' are each independently selected from hydrogen and a substituted or unsubstituted C-Chydrocarbyl; R-R, R′-R′ are each independently selected from hydrogen and a substituted or unsubstituted C-Chydrocarbyl, any two adjacent groups of R-Rare optionally linked to form a ring, and any two adjacent groups of R′-R′ are also optionally linked to form a ring; M and M′ are each independently selected from the Group 4 metals; each X is independently selected from the group consisting of a hydrocarbyl having 1 to 20 carbon atoms, hydride, amido, alkoxide, alkyl sulfide, alkyl phosphide, halide, diene, amine, phosphine, ether, and combinations thereof; m and n are independently an integer of from 1 to 4; and L is a divalent linking group.