Production of low-viscosity polyurethanes or polyesters useful for paints and varnishes comprises reacting unsaturated hydroxy or carboxy containing prepolymer with diisocyanate or dicarboxylic acid

Production of polyurethanes or polyesters comprises: (a) reacting a compound (I) having at least two hydroxy and/or carboxy functional groups with a compound (II) having at least one function reactive with at least one of the functional groups of (I), where (I) and/or (II) has one or more activated...

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