The invention relates to mixtures containing (A) an isocyanurate and/or biuret of 1,6-diisocyanatohexane (IIDI), (B) an isocyanurate of 1-isocyanato-3,5,5-trimethyl-5-isocyanaLomethyl-cyclohexane (IPDI), (C) at least one emulsifier, which can be obtained by reacting a diisocyanate (C2) selected from tetramethylenediisocyanate, dodecamethylenediisocyanate, 1,4-diiso-cyanatocyclohexane, 4,4′-di(isocyanatocyclohexyl)methane, trimethylhexandiisocyanate, tetramethylhexandiisocyanate, 2,4 or 2,6 toluylenediisocyanate and the isomer mixtures thereof, tetratnethylxylylenediisocyanate, p-xylylenediisocyanate, 2,4′ or 4,4′ diiso-cyanatodiphenylmethane and a mixture of at least two of said diisocyanates having at least one component (C1) which contains at least one group which can react with isocyanate groups and at least one hydrophile group, and (D) optionally a solvent.