Patent ID: 7888402
Filing Date: 2011-02-15
Classification: C08G,C09D

Abstract:
1. 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 free-radically polymerizable unsaturated group and/or at least one cationically polymerizable group selected from optionally substituted acryloyl groups and optionally substituted vinyl ether groups, 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, wherein the polyisocyanate (A) has an allophanate group, calculated as C the majority of the compound b) is attached via the allophanate groups; compounds carrying capped amino groups, carbamate end groups and/or urea end groups are excluded as synthesis components; 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 compound d) is at least one compound d3) which carries at least one nonionic group as a dispersive group, and is a monohydric polyalkylene oxide polyether alcohol comprising 5 to 90 ethylene oxide units.