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Radiation-curable water-emulsifiable polyisocyanates

  • US 7,943,682 B2
  • Filed: 11/23/2006
  • Issued: 05/17/2011
  • Est. Priority Date: 12/01/2005
  • Status: Expired due to Fees
First Claim
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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 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, andf) 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, andwherein 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, andthe free-radically polymerizable unsaturated group and cationically polymerizable group are optionally substituted acryloyl groups or optionally substituted vinyl ether groups.

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