Removal of Al salts, HCl, NaCl, and organic by-products from diopat suspension by ceramic membranes at high acidity conditions at elevated temperatures

摘要

The present invention relates toDippat2,4-dihydroxybenzophenoneAn improved method for isolating 2,4-bis - (2,4-dihydroxyphenyl) - 6 - (4-methoxyphenyl) - 1,3,5-triazine (diopat) from aqueous alkaline mixture m containing aluminum and aluminum salts;Precipitation diopet by acidifying mixture m to pHHeating the acidified mixture m to a temperature in the range of 80 to 95A ceramic film is used as a result of dideposition.The method of separating diopt precipitated from dissolved 2,4-dihydroxybenzophenone and dissolved aluminum salt is included;Provide a method.No selection