| abstract |
The invention relates to a method for producing the tautomeric form (I) of 2,4,6-trianilino-p-(carbo-2'-ethylhexyl-1'-oxy)-1,3,5-triazine by the crystallisation of a tautomer mixture in the presence of one or more solvents selected from the group consisting of aliphatic alcohols having 2 8 C-atoms made of aliphatic alcohols, aliphatic carboxylic acid alkyl esters having a total of between 3 - 10 C-atoms, aromatic carboxylic acid alkyl esters having a total of between 8 - 12 C-atoms, aliphatic carboxylic acid esters having a total of between 3 9 C atoms, carboxylic acid nitriles having a total of between 2 - 8 C-atoms, dialkylketones having a total of between 3 - 6 C-atoms and aliphatic sulphones having a total of between 3 - 6 C-atoms. The solvent or solvent mixture can additionally contain up to 30 wt. % of a hydrocarbon. (I) acts as a light protecting agent in cosmetic preparations. |