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:
Aug. 29, 2017
Filed:
Jan. 14, 2016
Applicant:
Chemtura Corporation, Middlebury, CT (US);
Inventor:
Alan B. True, New Haven, CT (US);
Assignee:
LANXESS Solutions US Inc., Middlebury, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J 21/16 (2006.01); B01J 21/20 (2006.01); B01J 38/50 (2006.01); B01J 38/52 (2006.01); B01J 38/60 (2006.01); B01J 38/62 (2006.01); C07C 209/24 (2006.01); C07C 209/68 (2006.01); B01J 37/06 (2006.01); C09K 15/18 (2006.01);
U.S. Cl.
CPC ...
B01J 38/60 (2013.01); B01J 21/16 (2013.01); B01J 21/20 (2013.01); B01J 38/50 (2013.01); B01J 38/52 (2013.01); B01J 38/62 (2013.01); C07C 209/24 (2013.01); C07C 209/68 (2013.01); B01J 37/06 (2013.01); C09K 15/18 (2013.01); Y02P 20/584 (2015.11);
Abstract
Catalysts, in particular clay catalysts, use in alkylation reaction of aromatic compounds, e.g., aromatic amines, that have lost activity during use, are regenerated by contacting the used catalyst with a mixture of a minor amount of an acid, in a mixture with water and an organic solvent. The regeneration process is readily incorporated into an alkylation process for aromatic amines.