REMOVAL OF AL-SALTS, HCL, NACL AND ORGANIC BY-PRODUCT FROM DIOPAT SUSPENSION BY MEANS OF CERAMIC MEMBRANES IN STRONG ACIDIC CONDITIONS AT HIGH TEMPERATURE

REMOVAL OF AL-SALTS, HCL, NACL AND ORGANIC BY-PRODUCT FROM DIOPAT SUSPENSION BY MEANS OF CERAMIC MEMBRANES IN STRONG ACIDIC CONDITIONS AT HIGH TEMPERATURE

The present invention provides an improved process for isolating 2,4-bis-(2,4-dihydroxyphenyl)-6-(4-methoxyphenyl)-1,3,5-triazine (DIOPAT) from an aqueous alkaline mixture M comprising the DIOPAT, 2,4-dihydroxybenzophenone, and aluminum salts, wherein the process comprises the steps of precipitating...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MUELLER, Andreas, LANZINGER, Dominik, NAGEL, Johannes, MALISZ, Jacek
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The present invention provides an improved process for isolating 2,4-bis-(2,4-dihydroxyphenyl)-6-(4-methoxyphenyl)-1,3,5-triazine (DIOPAT) from an aqueous alkaline mixture M comprising the DIOPAT, 2,4-dihydroxybenzophenone, and aluminum salts, wherein the process comprises the steps of precipitating the DIOPAT by acidifying the mixture M to a pH