Patent ID: 7943682

Claim:
A water-emulsifiable, radiation-curable polyisocyanate (A), comprising as synthesis components: a) at least one organic di- or polyisocyanate; b) at least one compound having at least one isocyanate-reactive group and at least one selected from the group consisting of a free-radically polymerizable unsaturated group, a cationically polymerizable group and both a free-radically polymerizable unsaturated group and a cationically polymerizable group; c) optionally, at least one further organic di- or polyisocyanate, different than a) d) at least one compound having precisely one isocyanate-reactive group and at least one saturated dispersive group, e) optionally, at least one compound having at least two isocyanate-reactive groups, and f) optionally, compounds different than a) to d) and having at least one isocyanate-reactive group, with the proviso that compounds comprising capped amino groups, carbamate end groups and/or urea end groups in combination with anionic dispersive compounds are excluded as synthesis components, and wherein the isocyanate content, calculated as NCO with the molecular weight 42 g/mol, is at least 3% by weight and up to 25% by weight, and the free-radically polymerizable unsaturated group and cationically polymerizable group are optionally substituted acryloyl groups or optionally substituted vinyl ether groups.