Invention Grant
- Patent Title: Process for making a granule or powder
-
Application No.: US17280066Application Date: 2019-09-16
-
Publication No.: US12006487B2Publication Date: 2024-06-11
- Inventor: Frank Jaekel , Astrid Schmidt , Michael Klemens Mueller
- Applicant: BASF SE
- Applicant Address: DE Ludwigshafen am Rhein
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen am Rhein
- Agency: ArentFox Schiff LLP
- Priority: EP 197041 2018.09.27
- International Application: PCT/EP2019/074613 2019.09.16
- International Announcement: WO2020/064379A 2020.04.02
- Date entered country: 2021-03-25
- Main IPC: C11D1/04
- IPC: C11D1/04 ; B01J2/04 ; B01J2/16 ; C11D3/20 ; C11D3/33 ; C11D3/39 ; C11D11/00 ; 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.
(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.
Public/Granted literature
- US20210317392A1 PROCESS FOR MAKING A GRANULE OR POWDER Public/Granted day:2021-10-14
Information query
