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:
Nov. 09, 2021
Filed:
Feb. 28, 2018
Applicant:
Dow Global Technologies Llc, Midland, MI (US);
Inventors:
Liam P. Spencer, Lake Jackson, TX (US);
David M. Pearson, Lake Jackson, TX (US);
Assignee:
Dow Global Technologies LLC, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 4/649 (2006.01); C08F 4/64 (2006.01); C08F 4/659 (2006.01); C08F 210/16 (2006.01);
U.S. Cl.
CPC ...
C08F 4/6497 (2013.01); C08F 4/64075 (2013.01); C08F 4/65912 (2013.01); C08F 210/16 (2013.01);
Abstract
Catalyst systems contain metal-ligand complexes according to formula (I): In formula (I), M is Ti, Zr, of Hf; n is 0, 1, 2, or 3; m is 1 or 2; each Rand each Ris independently chosen from (C-C)hydrocarbyl, (C-C)heterohydrocarbyl, (C-C)aryl, (C-C)heteroaryl, halogen, and —H; Rand Rare optionally covalently linked to each other; and each Ris a hydrocarbon or heterohydrocarbon radical having an identity depending on the value of subscript m. The metal-ligand complexes may be incorporated as procatalysts in catalyst systems for polyolefin polymerization.