公开(公告)号：US12275919B2

公开(公告)日：2025-04-15

申请号：US17599766

申请日：2020-03-20

Applicant: BASF SE

Inventor： Frank Jaekel ,  Michael Klemens Mueller ,  Astrid Schmidt

IPC: C11D3/08 ,  C11D3/33 ,  C11D3/37 ,  C11D3/39 ,  C11D7/14 ,  C11D7/32 ,  C11D11/02 ,  C11D17/06

Abstract: Process making a powder or granule containing (A) at least one chelating agent selected from alkali metal salts of methyl glycine diacetic acid (MGDA) and of glutamic acid diacetate (GLDA) and of iminodisuccinic acid (IDS), (B) at least one alkali metal silicate, and (C) at least one (co)polymer containing carboxylic acid group, partially neutralized with alkali, in a weight ratio of (A):[(B)+(C)] of from 20:1 up to 100:1, wherein said powder or granule contains at least 75% by weight of chelating agent (A), said process comprising the steps of (a) mixing the at least one chelating agent (A) and the at least one alkali metal silicate (B) and the at least one (co)polymer (C) in the presence of water, (b) removing most of said water by spray-drying or spray granulation using a gas with an inlet temperature of at least 125° C.

公开(公告)号：US12006487B2

公开(公告)日：2024-06-11

申请号：US17280066

申请日：2019-09-16

Applicant: BASF SE

Inventor： Frank Jaekel ,  Astrid Schmidt ,  Michael Klemens Mueller

IPC: C11D1/04 ,  B01J2/04 ,  B01J2/16 ,  C11D3/20 ,  C11D3/33 ,  C11D3/39 ,  C11D11/00 ,  C11D17/06

CPC classification number: C11D11/0082 ,  B01J2/04 ,  B01J2/16 ,  C11D1/04 ,  C11D3/33 ,  C11D3/3942 ,  C11D17/06

Abstract: Process for making a powder or granule containing



(A) at least one chelating agent selected from alkali metal salts of methyl glycine diacetic acid (MGDA) and of glutamic acid diacetate (GLDA) and of iminodisuccinic acid (IDS),
(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 chelating agent (A),
said process comprising the steps of

(c) mixing the at least one chelating agent (A) and the at least one alkali metal salt of fatty acid (B) in the presence of water,
(d) removing most of said water by spray-drying or by spray granulation using a gas with an inlet temperature of at least 125° C.