Aqueous Mehrkomponentensysem, process for its preparation and its use

Aqueous multicomponent system comprising (II) at least one aqueous component comprising at least one herein dissolved and / or dispersed isocyanate-reactive functional group-containing graft copolymer (P) based on polyurethane, preparable by reacting at least one polyurethane (P '), selected from the group consisting of hydrophobic one or hydrophilic polyurethanes, which have on average at least one functional group selected from the group consisting of thiocarbamate groups, thiol groups and sulfide groups to graft copolymerization with at least one olefinically unsaturated monomer, or alternatively (II) at least one organic component containing at least one water-soluble and / or dispersible graft copolymer (P) based on polyurethane and (III) at least one aqueous component such as (IV) at least one component containing at least one polyisocyanate or consists of Processes for their preparation and their use.