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. 03, 2025
Filed:
Jun. 26, 2020
Dow Global Technologies Llc, Midland, MI (US);
Bryan D. Stubbert, Midland, MI (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
Catalyst systems comprising a metal-ligand complex according to formula (I): where: M is a metal chosen from zirconium or hafnium, the metal having a formal oxidation state of +2, +3, or +4; each X is a monodentate or bidentate ligand independently chosen from (C-C) hydrocarbyl, (C-C) aryl, (C-C) heteroaryl, or halogen; n is 2 or 3; R, R, R, R, and Rare independently chosen from (C-C) hydrocarbyl, (C-C) heterohydrocarbyl, —Si(R), —N(R), —OR, halogen, or hydrogen; optionally, Rand Rare covalently linked to form an aromatic ring; zand zare independently C(R) or N, wherein each Ris —II or (C-C) hydrocarbyl; provided that at least one of zand zis N; and each Rand Rin formula (I) is independently a (C-C) hydrocarbyl.