FIELD: chemistry.
SUBSTANCE: present invention relates to hydroxyl containing polyester polyurethane dispersions for producing lacquer, coatings and adhesive materials. The dispersions contain products of reacting (a) at least one, at least bifunctional polyol, (b) at least one (potentially) ionic compound with at least one acid group and at least one group capable of reacting with isocyanates and selected from di-, tri- or mono-oxycarboxylic acids, (c) at least one acid anhydride and (d) at least one, at least bifunctional polyisocyanate component. Also described are methods of producing said dispersions and coating agents containing said dispersions.
EFFECT: easy and cheap production of hydroxyl containing polyester polyurethane dispersions which enable to obtain coatings having excellent optical properties and flow, low susceptibility to pitting, good resistance to solvents and controlled relationship between hardness and elasticity.
10 cl
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