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:
Oct. 12, 2021
Filed:
Nov. 06, 2017
Applicant:
Dow Technology Investments Llc, Midland, MI (US);
Inventors:
Michael A. Brammer, Freeport, TX (US);
Marinus A. Bigi, Freeport, TX (US);
Rick B. Watson, Missouri City, TX (US);
Assignee:
Dow Technology Investments LLC, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 45/50 (2006.01); B01J 31/40 (2006.01); B01J 31/18 (2006.01);
U.S. Cl.
CPC ...
B01J 31/4053 (2013.01); B01J 31/186 (2013.01); B01J 31/4046 (2013.01); B01J 2231/321 (2013.01); B01J 2531/822 (2013.01);
Abstract
Disclosed herein are methods of treating a hydroformylation catalyst solution wherein the solution comprises rhodium, polyphosphoramidite ligands, and polyphosphoramidite ligand degradation products and wherein the hydroformylation catalyst solution is used to hydroformylate an olefin in an operating hydroformylation unit. In some embodiments, such methods comprise contacting the catalyst solution with a peroxide in the operating hydroformylation unit.