| abstract |
(57) Abstract: Containing 20 to 80% by weight of polyethylene glycol units and a) at least one organic polyisocyanate, b) unsaturated fatty alcohols, polyalkylene glycol ethers thereof, unsaturated fatty amines. Or a reaction product with an unsaturated fatty acid monoepoxide, c) A compound having not only two groups that react with an isocyanate group but also at least one group that is an ionic group or a structural element that can be converted into an ionic group, d) 750- A polyalkylene glycol having a molecular weight in the range of 10,000 and optionally e) a compound containing 3 to 6 hydroxyl groups or amino groups is used to combine the isocyanate groups in a) with the hydroxyl groups and amino groups in the remaining components. Ratio 0.7: An unsaturated polyurethane that can be produced by reacting 1 to 1.2: 1. [Effect] This unsaturated polyurethane is used as a dispersant for alkyd resins. |