US 12,351,776 B2
Process for making a granule
Marta Reinoso Garcia, Ludwigshafen (DE); Sylke Haremza, Neckargemuend (DE); Tile Gieshoff, Ludwigshafen (DE); Dan-Tam Daniel Tang, Ludwigshafen (DE); Thomas Schmidt, Ludwigshafen (DE); and Michael Klemens Mueller, Ludwigshafen (DE)
Assigned to BASF SE, Ludwigshafen am Rhein (DE)
Appl. No. 17/911,741
Filed by BASF SE, Ludwigshafen (DE)
PCT Filed Mar. 12, 2021, PCT No. PCT/EP2021/056394
§ 371(c)(1), (2) Date Sep. 15, 2022,
PCT Pub. No. WO2021/185702, PCT Pub. Date Sep. 23, 2021.
Claims priority of application No. 20163566 (EP), filed on Mar. 17, 2020.
Prior Publication US 2023/0143616 A1, May 11, 2023
Int. Cl. C11D 3/26 (2006.01); C11D 3/28 (2006.01); C11D 3/33 (2006.01); C11D 3/37 (2006.01); C11D 3/39 (2006.01); C11D 3/395 (2006.01); C11D 7/18 (2006.01); C11D 7/32 (2006.01); C11D 7/38 (2006.01); C11D 11/00 (2006.01); C11D 17/06 (2006.01)
CPC C11D 11/0082 (2013.01) [C11D 3/28 (2013.01); C11D 3/33 (2013.01); C11D 3/3761 (2013.01); C11D 3/3902 (2013.01); C11D 3/3953 (2013.01); C11D 7/3245 (2013.01); C11D 7/3281 (2013.01); C11D 17/06 (2013.01); C11D 17/065 (2013.01); C11D 2111/14 (2024.01)] 16 Claims
 
1. A process for making a powder or granule comprising
(A) at least one chelating agent selected from alkali metal salts of methyl glycine diacetic acid (MGDA) and of iminodisuccinic acid (IDS), and
(B) at least one compound of general formula (I a) or (I b)

OG Complex Work Unit Chemistry
wherein A1 is selected from (CH2)a wherein the variable a is in the range of from 4 to 20, and
e is selected from zero and 1,
R1 being the same or different and selected from C1-C10-alkyl and O-C1-C10-alkyl, and, optionally,
(C) at least one homo-or copolymer of (meth) acrylic acid, partially or fully neutralized with alkali,
said process comprising the steps of
(a) providing an aqueous solution or slurry containing chelating agent (A) and said compound (B) and, if applicable, (co) polymer (C), and
(b) removing most of said water by spray drying or granulation.