| abstract |
The present invention relates to an aqueous UV-curable dispersion containing at least one reaction product composed of a) at least one polyisocyanate having an average isocyanate functionality of at least 2.2, of which at least one polyisocyanate is preferably an oligomeric polyisocyanate having a urethane , Biuret, allophanate, iminooxadiazinedione and/or isocyanurate structural units, b) at least one monohydroxy-functional compound containing acryloyl groups, c) at least one component which contains nonionic hydrophilic groups and has at least one further isocyanate-reactive group, d) optionally at least one Di- and / or polyfunctional amine or hydroxyamine as a chain extender and e) optionally other monomeric, oligomeric and / or polymeric substances, which may also contain other unsaturated groups, where the reaction product contains no ionogenic or io has nic hydrophilizing groups, a process for their production, the use of the dispersion for the production of glass fiber sizes, a glass fiber size at least containing such a dispersion, glass fibers provided with a size obtainable using such a dispersion, a process for the production of glass fiber reinforced plastics, and a corresponding glass fiber reinforced plastic. |