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.