Abstract: An olefinically unsaturated, hydrophilic or hydrophobic polyurethane, which can be produced as follows: a polyurethane pre-polymer, produced by at least reacting at least one poly-isocyanate with at least one saturated and/or olefinically unsaturated higher-molecular and/or lower-molecular weight polyol in one or more stages so that, according to the statistical mean, at least one free isocyanate group per molecule still remains, is reacted with at least one compound containing at least two functional groups that are reactive to isocyanate, in such a way that no remaining free isocyanate groups are detectable. The resultant polyurethane is then reacted with at least one anhydride of an &agr;,&bgr;-unsaturated carboxylic acid. Also, the use of the polyurethane for producing graft copolymers and to the use of the polyurethane and the graft copolymers for producing coating materials, adhesives and sealing masses.

Abstract: The invention relates to a coating composition comprising at least one OH-functional binder component and at least one component compound, functioning as a crosslinking agent, which has NCO groups blocked with a pyrazole compound.