| abstract |
The present invention is directed to a) at least one organic polyisocyanate, b) unsaturated fatty alcohols or polyalkylene glycol ethers thereof, unsaturated fatty amines or reaction products of unsaturated fatty acids and mono epoxides, c) two groups reacting with isocyanate groups, as well as A compound containing at least one ionic group, d) a polyalkylene glycol having a molecular weight of 750 to 10,000 and, if necessary, e) a compound containing from 3 to 6 hydroxyl groups or amino groups, isocyanate groups in component (a). It relates to an unsaturated polyurethane comprising 20 to 80% by weight of polyethylene glycol units, which can be prepared by reacting the ratio of hydroxyl groups and amino groups in the remaining components to 0.7: 1 to 1.2: 1.n n n Unsaturated polyurethanes are used as dispersions for alkyd resins. |