Aqueous dispersions comprising microfine metal oxide particles and dispersion auxiliaries, wherein, as dispersion auxiliaries, at least one of the compounds of the general formula (I)in whichM is hydrogen, monovalent or divalent metal cation, ammonium ion, organic amine radical;a is 1, or where M is a divalent metal cation, is ½;X is likewise —OMa or —O—(CpH2pO)q—Rl where R1═H, aliphatic hydrocarbon radical having 1-20 carbon atoms, cycloaliphatic hydrocarbon radical having 5 to 8 carbon atoms, optionally substituted aryl radical having 6 to 14 carbon atoms, p=2 to 4, q=0 to 100, —NHR2 and / or —NR22 where R2═R1 or —CO—NH2;Y is O, NR2;A1 is ethylene radical, propylene radical, isopropylene radical, butylene radical;m is 10 to 30;n is 0 to 50; andk is 10 to 30, where the summ+k is in the range from 20 to 60, is co-used.