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. 16, 2018
Filed:
Dec. 15, 2014
Applicant:
Akzo Nobel Chemicals International B.v., Arnhem, NL;
Inventors:
Natalija Smolko-Schvarzmayr, Hjälteby, SE;
Anders Klingberg, Henån, SE;
Assignee:
AKZO NOBEL CHEMICALS INTERNATIONAL, B.V., Arnhem, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B03D 1/02 (2006.01); C08G 63/91 (2006.01); B03D 1/016 (2006.01); C07D 219/06 (2006.01); B03D 1/01 (2006.01); C07C 229/24 (2006.01); C07C 229/26 (2006.01);
U.S. Cl.
CPC ...
C08G 63/916 (2013.01); B03D 1/011 (2013.01); B03D 1/016 (2013.01); B03D 1/02 (2013.01); B03D 1/021 (2013.01); C07C 229/24 (2013.01); C07C 229/26 (2013.01); C07D 219/06 (2013.01); B03D 2201/02 (2013.01); B03D 2201/06 (2013.01); B03D 2203/06 (2013.01);
Abstract
The present invention relates to a compound obtainable by the condensation of a polyol having 3-4 hydroxyl groups, adicarboxylic acid or a derivative thereof, an alkanolamine and a fatty acid, followed by reaction with an alkylating agent. This compound is useful as a collector in a process for the reverse froth flotation of non-sulfidic ores containing silicate as impurities, especially phosphate ores.