PROCESS FOR ISOLATING 2,4-BIS-(2,4-DIHYDROXYPHENYL)-6-(4-METHOXYPHENYL)-1,3,5-TRIAZINE (DIOPAT)

Organization Name

BASF SE

Inventor(s)

Christian Schwede of Weinheim (DE)

Johannes Felix Haus of Ludwigshafen am Rhein (DE)

Joerg Therre of Ludwigshafen am Rhein (DE)

Jacek Malisz of Ludwigshafen am Rhein (DE)

Helmut Kronemayer of Ludwigshafen am Rhein (DE)

Matthias Kruck of Muttenz (CH)

Markus Spittler of Grenzach-Wyhlen (DE)

PROCESS FOR ISOLATING 2,4-BIS-(2,4-DIHYDROXYPHENYL)-6-(4-METHOXYPHENYL)-1,3,5-TRIAZINE (DIOPAT)

This abstract first appeared for US patent application 18726838 titled 'PROCESS FOR ISOLATING 2,4-BIS-(2,4-DIHYDROXYPHENYL)-6-(4-METHOXYPHENYL)-1,3,5-TRIAZINE (DIOPAT)

Original Abstract Submitted

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.