Abstract: Aqueous dispersions (A) containing a micronized organic UV filter (a) selected from (a1) the micronized compound of formula (a2)the micronized compound of formula (a3) the micronized compound of formula (a4) the micronized compound of formula and (b) a vinylpyrrolidone copolymer or homopolymer.

Abstract: Disclosed are aqueous dispersions (A), comprising a micronized organic UV filter (a) selected from (a1) the micronized compound of formula (1), wherein R1 and R2 independently from each other are C1-C20alkyl; C2-C20alkenyl; C3-C10ocycloalkyl; C3-C10cycloalkenyl; or R1 and R2 together with the linking nitrogen atom form a 5- or 6-membered heterocyclic ring; A is —N(R3)—; —O—; or the direct bond; B is a bivalent radical selected from alkylene, cycloalkylene alkenylene or phenylene radical which is optionally substituted by a carbonyl- or carboxy group; a radical of formula *—CH2—C??C—CH2—; or the divalent radical *-B-* corresponds to the formula (1a), wherein n1 is a number from 1 to 3; A is —N(R3)—; or —O—; and R3 is hydrogen; C1-C5alkyl; or hydroxy-C1-C5alkyl; (a2) the micronized compound of formula (2), wherein T1 is hydrogen; C1-C12alkyl; preferably iso-octyl, or C1-C4alkyl substituted by phenyl; (a3) the micronized compound of formula (3a); wherein R4 and R5 independently from each other are hydrogen; C1-C