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. 26, 2019
Filed:
Jul. 05, 2016
Applicant:
Dow Technology Investments Llc, Midland, MI (US);
Inventors:
Michael A. Brammer, Freeport, TX (US);
George R. Phillips, South Charleston, WV (US);
Glenn A. Miller, South Charleston, WV (US);
Donald L. Campbell, Jr., Carmel, IN (US);
Assignee:
Dow Technology Investments LLC, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07B 63/04 (2006.01); C07F 9/145 (2006.01); B01J 31/18 (2006.01); C07C 45/50 (2006.01); C07C 215/10 (2006.01);
U.S. Cl.
CPC ...
C07B 63/04 (2013.01); B01J 31/185 (2013.01); C07C 45/50 (2013.01); C07C 215/10 (2013.01); C07F 9/145 (2013.01); B01J 2231/321 (2013.01);
Abstract
A process involving admixing a ligand and an alkanolamine. The process allows the use of ligand despite the presence of contaminating amounts of phosphorus acid, and improves the shelf life of premixed ligand solutions.