Abstract: The invention discloses a method for obtaining crystalline diethylamino hydroxybenzoyl hexyl benzoate (I) comprising steps (a) to (d), (a) providing a feed comprising diethylamino hydroxybenzoyl hexyl benzoate (I) and at least a first crystallization solvent, and heating the feed to obtain a solution, wherein the diethylamino hydroxybenzoyl hexyl benzoate (I) has i) a phthalic acid dihexyl ester (PSDHE) (II) content of up to 100000 ppm; based on the weight of diethylamino hydroxybenzoyl hexyl benzoate (I); and wherein the amount of the diethylamino hydroxybenzoyl hexyl benzoate (I) in the feed is in the range of 15.0 to 65.0 wt % based on the total weight of the feed; (b) cooling the solution obtained in step (a) to obtain a supersaturated solution of diethylamino hydroxybenzoyl hexyl benzoate (I); (c) seeding the supersaturated solution obtained in step (b) with seed crystals of diethylamino hydroxybenzoyl hexyl benzoate (I); wherein the amount of the seed crystals is in the range from 0.01 to 15.

Abstract: The present invention relates to a process for the solidification of hexyl 2-[4-(diethylamino)-2-hydroxybenzoyl]benzoate (INCI diethylamino hydroxybenzoyl hexyl benzoate, DHHB), wherein the process comprises the step of (a) applying a shear rate of 800 s?1 or more to liquid hexyl 2-[4-(diethylamino)-2-hydroxybenzoyl]benzoate and (b) adding seed crystals of hexyl 2-[4-(diethylamino)-2-hydroxybenzoyl]benzoate.

Abstract: The present invention relates to a process for the solidification of hexyl 2-[4-(diethylamino)-2-hydroxybenzoyl]benzoate (INCI diethylamino hydroxybenzoyl hexyl benzoate, DHHB), wherein the process comprises the step of (a) applying a shear rate of less than 800 s?1 to liquid hexyl 2-[4-(diethylamino)-2-hydroxybenzoyl]benzoate and (b) adding seed crystals of hexyl 2-[4-(diethylamino)-2-hydroxybenzoyl]benzoate.