Aqueous dispersions comprising a polyurethane, a polyisocyanate and a tertiary alkanolamine

摘要

Aqueous two-component dispersions comprising a) a polyurethane carrying anionic groups which make the polyurethane dispersible in water (component a), b) from 0.04 to 1.5 mol of NCO groups in the form of a water-emulsifiable polyisocyanate (component b) per kg of component (a), and c) from 0.05 to 40 mol of tertiary amino groups in the form of a tertiary alkanolamine (component c) per mole of NCO groups in the form of component (b).