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Radiation-Curable Water-Emulsifiable Polyisocyanates

  • US 20080300338A1
  • Filed: 11/23/2006
  • Published: 12/04/2008
  • Est. Priority Date: 12/01/2005
  • Status: Active Grant
First Claim
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1. A water-emulsifiable, radiation-curable polyisocyanate (A) comprising as synthesis componentsa) 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, andf) optionally, compounds different than a) to d) and having at least one isocyanate-reactive group,wherefrom compounds carrying 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.

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