公开(公告)号：US20230025816A1

公开(公告)日：2023-01-26

申请号：US17784573

申请日：2020-12-01

Applicant: BASF SE

Inventor： Michael SCHOENHERR ,  Kati SCHMIDT ,  Johannes Felix HAUS ,  Michael Klemens MUELLER ,  Frank JAEKEL ,  Marta REINOSO GARCIA ,  Volker KLOCK

IPC: C11D3/20 ,  C11D1/52 ,  C11D3/37 ,  C11D11/02

Abstract: Process for making a granule containing (A) at least one chelating agent selected from alkali metal salts of methyl glycine diacetic acid (MGDA) and of iminodisuccinic acid (IDS), and, optionally, (B) at least one homo- or copolymer of (meth)acrylic acid, partially or fully neutralized with alkali, said process comprising the steps of (a) providing an aqueous solution or slurry containing chelating agent (A) and, if applicable, (co)polymer (B), (b) removing most of said water by spray granulation in a fluidized bed, (c) treating the resultant granule in a vessel of which at least one part rotates around a horizontal axis and wherein said vessel is selected from paddle mixers, free-fall mixers and plough share mixers.

公开(公告)号：US20250066312A1

公开(公告)日：2025-02-27

申请号：US18726838

申请日：2022-12-20

Applicant: BASF SE

Inventor： Christian SCHWEDE ,  Johannes Felix HAUS ,  Joerg THERRE ,  Jacek MALISZ ,  Helmut KRONEMAYER ,  Matthias KRUCK ,  Markus SPITTLER

IPC: C07D251/24

Abstract: The present invention relates to an improved process for isolating 2,4-bis-(2,4-dihydroxyphenyl)-6-(4-methoxyphenyl)-1,3,5-triazine (DIOPAT) from a DIOPAT-containing aqueous mixture N, wherein the process comprises the steps of concentrating the aqueous mixture N to obtain a DIOPAT-containing aqueous suspension S1 having a certain solid content; evaporating solvent from the aqueous suspension S1; and drying the DIOPAT to obtain a solid content of more than 90 wt.-%, based on the total weight of the DIOPAT.