Aqueous dispersions (a) comprising an organic and micronised UV filter (a) selected from (a1) the micronised compound of the formula (i),Where R1 and R2 independently of each other are alkyl C1 -c20；Alquenyl C2 -c20；Cyclalkyl C3 -c10；Cyclalquenyl C3 -c10；Or R1 and R2 together with the binding nitrogen atom form a heterocyclic ring of 5 or 6 limbs；Is it? N (r3)；Huh? OOr direct connection；B is a selected bivalent radical alkyl,Cyclalkyl ene,Alkylene or phenylene which is optionally replaced by a carbonyl or carboxy group；A radical formula；Or the radical divalense * B -* corresponds to the formula (1a),Where N1 is a number of 1 to 3；Is it? N (r3)；Or is it? OAnd R3 is hydrogen；Alkyla C1 -c5；Or hydroxy -alkyl C1 -c5；(a2) the micronised compound of the formula (2),Where T1 is hydrogen；Alkyl C1 -c12；Preferably isooctyl or alkyl C1 -c4 substituted for phenyl；(a3) the micronised compound of the formula (third),Where R4 and R5 independently of each other are hydrogen；Alkyl C1 -c18；Or arila C6 -c12；R6,R7 and R8 independently of each other,Are hydrogen；Alkyl C1 -c18；Or a radical formula (3b),In which R9,R10 and R11 independently of each other,Are hydrogen；Or alkyl C1 -c18；(a4) the micronised compound of the formula (4),In which R12 and R13,Regardless of each other,Represent hydrogen；Halogen；Alkyl C1 -c12: hydroxy C1 -c18；Alkoxy C1 -c18；Poly (ethoxy)-alkoxy with an alkyl fragment C1 -c4 and an ethoxy number ranging from 1 to 4；Mono or dialkyl C1 -c4amino,R14 represents halogen；Hydroxy；Amino；Phenyl that is optionally replaced 1 to 3 times by a hydroxy radical at least in a position for or phenyl,Possibly 1 to 3 times replaced in an ortho position,Target or stop for an alkoxy C1 -c12 or cyan or alkyl amino group C1 -c7；And (b) a copolymer or polymer of vinylpyrolidone.são descritas dispersões aquosas (a) que compreendem um filtro uv orgânico e micronizado (a) selecionado de (a1) o composto micronizado da fórmula (i), em que r1 e r2 independentemente um do outro são alquila c1-c20；
