Patent ID: 8802887

Claim:
A method for the crystallization of n-hexyl 2-(4-N,N-diethylamino-2-hydroxybenzoyl)benzoate comprising the steps a) providing a clear melt of n-hexyl 2-(4-N,N-diethylamino-2-hydroxybenzoyl)-benzoate at a temperature above 57° C., and b) crystallizing out n-hexyl 2-(4-N,N-diethylamino-2-hydroxybenzoyl)benzoate at a temperature below 57° C., wherein the clear melt from process step a) is stirred at a temperature below 57° C. until opacity arises, before process step b) is carried out and wherein the n-hexyl 2-(4-N,N-diethylamino-2-hydroxybenzoyl)benzoate has an average particle diameter of from 0.1 to 5 mm and a bulk density greater than 0.35 g/ml.