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:
Sep. 13, 2022
Filed:
Dec. 15, 2017
Applicant:
Rhodia Operations, Paris, FR;
Inventors:
Bing Hong, Shanghai, CN;
Alexander Lerch, Gelnhausen, DE;
Stéphane Streiff, Shanghai, CN;
Peng Fei Ji, Shanghai, CN;
Armin T. Liebens, Shanghai, CN;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C11D 1/00 (2006.01); C11D 3/20 (2006.01); C11D 3/28 (2006.01); C11D 3/39 (2006.01); C11D 3/395 (2006.01); C11D 11/00 (2006.01); C11D 17/04 (2006.01); C11D 3/34 (2006.01);
U.S. Cl.
CPC ...
C11D 3/392 (2013.01); C11D 1/00 (2013.01); C11D 3/20 (2013.01); C11D 3/28 (2013.01); C11D 3/34 (2013.01); C11D 3/3409 (2013.01); C11D 3/391 (2013.01); C11D 3/3915 (2013.01); C11D 3/3917 (2013.01); C11D 3/3942 (2013.01); C11D 11/0023 (2013.01); C11D 17/049 (2013.01);
Abstract
Provided is the use of a lanthanide metal complex as a bleaching catalyst. In particular, the lanthanide metal complex comprises a ligand which is an aromatic compound having at least one electron withdrawing substituent and at least one nucleophilic group. Provided is also a composition containing the lanthanide metal complex.