Aqueous multicomponent system its preparation and use

摘要

Aqueous multi-component system (I) comprises at least an aqueous component (a) containing at least dissolved and/or dispersed, isocyanate-reactive functional groups containing graft copolymer (P) based on polyurethane; at least organic component (b) containing at least an aqueous solvent and/or dispersible graft copolymer (P) based on polyurethane; at least aqueous component (c); and at least a component (d) containing polyisocyanate. Aqueous multi-component system (I) comprises at least an aqueous component (a) containing at least dissolved and/or dispersed, isocyanate-reactive functional groups containing graft copolymer (P) based on polyurethane (obtained by graft copolymerization of at least a polyurethane (P1) (hydrophobic or hydrophilic polyurethane) that exhibits at least a functional group (thiocarbamate group, thiol group or sulfide groups) in the statistic means, with at least a olefinic unsaturated monomer); at least organic component (b) containing at least an aqueous solvent and/or dispersible graft copolymer (P) based on polyurethane; at least aqueous component (c); and at least a component (d) containing at least a polyisocyanate. An independent claim is also included for the preparation of (I).