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. 15, 2022
Filed:
Feb. 27, 2018
Applicant:
Kemira Oyj, Helsinki, FI;
Inventors:
Fengyang Li, Shanghai, CN;
Yan Xu, Shanghai, CN;
Assignee:
Kermira Oyj, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 5/14 (2006.01); C02F 1/68 (2006.01); C23F 11/14 (2006.01); C02F 101/20 (2006.01); C02F 103/28 (2006.01); C07F 9/36 (2006.01); C08F 20/06 (2006.01); C08F 220/06 (2006.01); C07C 211/00 (2006.01); C07F 9/38 (2006.01);
U.S. Cl.
CPC ...
C02F 5/14 (2013.01); C02F 1/68 (2013.01); C23F 11/14 (2013.01); C02F 2101/203 (2013.01); C02F 2103/28 (2013.01); C02F 2303/08 (2013.01); C07C 211/00 (2013.01); C07F 9/38 (2013.01); C08F 20/06 (2013.01); C08F 220/06 (2013.01);
Abstract
A composition for stabilizing iron compounds in an aqueous environment, includes a polycarboxylic acid or its salt(s), at least one monomeric or polymeric phosphonate including at least one phosphonic acid group, or its salt(s), at least one corrosion inhibitor including amino groups, and 1-15 weight-% of polycitric acid or a copolymer of citric acid with polyols or glycerol, calculated as an active ingredient from a total weight of constituents in the composition, as dry.