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. 18, 2025
Filed:
Apr. 25, 2019
Basf SE, Ludwigshafen am Rhein, DE;
Marta Reinoso Garcia, Ludwigshafen, DE;
Juergen Detering, Ludwigshafen, DE;
Carsten Sueling, Ludwigshafen, DE;
Kati Schmidt, Ludwigshafen, DE;
Michael Klemens Mueller, Ludwigshafen, DE;
Gazi Tuerkoglu, Ludwigshafen, DE;
Thomas Schmidt, Ludwigshafen, DE;
BASF SE, Ludwigshafen am Rhein, DE;
Abstract
Process for manufacturing granules or powders comprising the steps of (a) providing an aqueous solution or slurry of (A) at least one chelating agent according to general formula (I a) [CH—CH(COO)—N(CH—COO)]MH(I a) wherein M is selected from alkali metal cations and ammonium, same or different, and x is in the range of from 0.01 to 1.0 or (I b) [OOC—CHCH—CH(COO)—N(CH—COO)]MH(I b) wherein M is as defined above, and x in formula (I b) is in the range of from 0.01 to 2.0, and (B) at least one polymer selected from (B1) polyaspartates with an average molecular weight Min the range of from 1,000 to 20,000 g/mole, and (B2) copolymers comprising, in copolymerized form, (α) at least one ester of an ethylenically unsaturated mono- or dicarboxylic acid, and (β) at least one ethylenically unsaturated N-containing monomer, and (b) spray drying or granulating said solution or slurry.