C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/79 (2006.01) C08G 18/09 (2006.01) C08G 18/12 (2006.01) C08G 18/32 (2006.01) C08G 18/67 (2006.01) C09D 175/16 (2006.01) C09J 175/16 (2006.01)
Patent
CA 2619181
Aqueous UV-hardenable dispersions are provided, as well as their use for the production of coating agents, in particular coatings for ligneous substrates. The dispersions comprise the reaction product of a) one or more polyisocyanates of which at least one polyisocyanate is an oligomeric polyisocyanate of hexamethylene diisocyanate with urethane, biuret, iminooxadiazindione and/or isocyanurate structural units, b) one or more monohydroxy-functional compounds containing (meth)acryloyl groups, c) at least one component c1), which has a hydrophilising effect on the basis of incorporated (potentially) ionic groups and comprises at least one further isocyanate- reactive group and/or at least one component c2) which contains non-ionically hydrophilically acting groups and comprises at least one further isocyanate-reactive group, d) one or more difunctional and/or polyfunctional amines or hydroxyamines as chain extender, and e) optionally other monomeric, oligomeric and/or polymeric substances, which may optionally also contain further unsaturated groups.
Blum Harald
Irle Christoph
Luehmann Erhard
Sommer Stefan
Bayer Materialscience Ag
Fetherstonhaugh & Co.
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