CPC C11D 11/0082 (2013.01) [B01J 2/04 (2013.01); B01J 2/16 (2013.01); C11D 1/04 (2013.01); C11D 3/33 (2013.01); C11D 3/3942 (2013.01); C11D 17/06 (2013.01)] | 9 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
(B) at least one alkali metal salt of a C10-C20 fatty acid,
in a weight ratio of (A):(B) of from 40:1 up to 1,000:1,
wherein said powder or granule contains at least 75% by weight of (A),
wherein the process comprises:
(a) mixing (A) and (B) in the presence of water, and
(b) removing at least 55% of said water by spray-granulation in a fluidized bed or by spray drying using a gas with an inlet temperature of at least 125° C.
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