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1. (WO2018011027) PROCESS FOR MANUFACTURING OF MGDA AND GLDA CONTAINING GRANULES, THE GRANULES AND THEIR USE

Pub. No.:    WO/2018/011027    International Application No.:    PCT/EP2017/066705
Publication Date: Fri Jan 19 00:59:59 CET 2018 International Filing Date: Thu Jul 06 01:59:59 CEST 2017
IPC: C11D 3/33
C11D 7/32
C11D 11/02
C11D 17/00
Applicants: BASF SE
Inventors: REINOSO GARCIA, Marta
MUELLER, Michael Klemens
SUELING, Carsten
MORMUL, Verena
Title: PROCESS FOR MANUFACTURING OF MGDA AND GLDA CONTAINING GRANULES, THE GRANULES AND THEIR USE
Abstract:
Process for manufacturing granules of salts of at least two aminopolycarboxylic acids (A), com- prising the steps of (a) providing an aqueous solution of (A1) at least one alkali metal salt of a mixture of L- and D- enantiomers of methyl glycine diacetic acid (MGDA), said mixture containing predominantly the respective L-isomer with an enantiomeric excess (ee) in the range of from 10 to 95 %, (A2) at least one alkali metal salt of L- and D-enantiomers of glutamic acid diacetic acid (GLDA) or of enantiomerically pure L-GLDA, the weight ratio of (A1) and (A2) being in the range of from 1:9 to 9:1, (b) spray granulating said solution with a gas inlet temperature of at least 125°C. Additionally, the present invention relates to granules and to their use.