公开(公告)号：US20200181537A1

公开(公告)日：2020-06-11

申请号：US16316266

申请日：2017-07-05

Applicant: BASF SE

Inventor： Marta REINOSO GARCIA ,  Michael Klemens MUELLER ,  Carsten SUELING ,  Verena MORMUL

IPC: C11D3/33 ,  C11D17/00 ,  C11D17/06 ,  C11D11/02

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.

公开(公告)号：US20190127668A1

公开(公告)日：2019-05-02

申请号：US16086931

申请日：2017-03-29

Applicant: BASF SE

Inventor： Thomas SCHMIDT ,  Marta REINOSO GARCIA ,  Carsten SUELING ,  Verena MORMUL

IPC: C11D11/00 ,  C11D3/33 ,  C11D17/00

Abstract: The present invention is directed towards mixtures comprising (A) 90 to 99.999% by weight of racemic methyl glycine diacetic acid (MGDA) or of MGDA with predominantly the L-isomer in an enantiomeric excess of up to 9.5% or their respective mono-, di- or trialkali metal or mono-, di- or triammonium salts, and (B) in total 0.001 to 10% by weight of the diacetic acid derivative of aspartate as free acid or as mono-, di-, tri- or tetraalkali metal salt or as mono-, di-, tri- or tetraammonium salt, percent ages referring to the sum from (A) and (B).