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:
Mar. 26, 2019
Filed:
Apr. 19, 2016
Applicant:
Univation Technologies, Llc, Houston, TX (US);
Inventors:
Catherine Anne Faler, Houston, TX (US);
C. Jeff Harlan, Houston, TX (US);
Kevin P. Ramirez, Houston, TX (US);
Assignee:
Univation Technologies, LLC, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 41/26 (2006.01); C07C 43/23 (2006.01); C07D 311/82 (2006.01); C07D 209/82 (2006.01); C07D 213/32 (2006.01);
U.S. Cl.
CPC ...
C07C 41/26 (2013.01); C07C 43/23 (2013.01); C07D 209/82 (2013.01); C07D 213/32 (2013.01); C07D 311/82 (2013.01);
Abstract
New methods of preparing bridged bi-aromatic ligands are disclosed. The methods employ direct di-ortho-lithiation of aromatic rings of bridged protected bi-aromatic diphenols. The ligands may be used to prepare transition metal compounds useful as catalysts in olefin polymerization.