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:
May. 11, 2015
Applicant:
Akzo Nobel Chemicals International B.v., Arnhem, NL;
Inventors:
Elwin Schomaker, Arnhem, NL;
Paulus Johannes Cornelis Van Haeren, Doetinchem, NL;
Martin Heus, Arnhem, NL;
Assignee:
AKZO NOBEL CHEMICALS INTERNATIONAL B.V., Arnhem, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 227/00 (2006.01); C07C 227/42 (2006.01);
U.S. Cl.
CPC ...
C07C 227/42 (2013.01);
Abstract
The present invention relates to a process to crystallize a chelating agent containing a step of adding seeds to a saturated or supersaturated aqueous solution or dispersion of the chelating agent and a subsequent step of milling the dispersion, wherein the step of milling the dispersion is performed using equipment operating at at least 1,000 rpm, and to products obtainable by such process.