Composition useful for lacquers based on mixtures of emulsions and dispersions of polymer polyols and coatings prepared therefrom

摘要

A compsn. comprising (i) at least one opt. masked polyisocyanate (I) in the form of an aq. emulsion with an ave. particle size d50 of 0.0-10 micrometers, pref. less than 2 and greater than 0.2 micrometers and (ii) at least one polyhydroxylated polymer (II), esp. a polyol, in the form of an aq. dispersion with an ave. particle size d50 of 10-200 nm, whereby the (II) is present in an amt. of at least = 35 - 0.75 R, pref. at least 40 - 0.75 R, and esp. at least 45 - 0.75 R wt.% or at most 45 - 2 R, pref. at most 40 - 2 R and esp. at most 35 - 2 R wt.%, where R = d50(I)/d50(II).