Urethanacrylates, process for their preparation as well as their use

摘要

Radiation-cured coating material containing a urethane-acrylate which is obtained by reacting a (cyclo)aliphatic di-isocyanate trimer with a high content of imino-oxadiazine dione structural units with a hydroxy-functional 1-12C alkyl (meth)acrylate Coating material which is hardened by high-energy radiation, containing the reaction product of: (a) isocyanate trimer(s) based on aliphatic or cycloaliphatic di-isocyanates, 20-100 mol% of which consists of imino-oxadiazine dione compounds of formula (A), with (b) an alcohol component containing at least one monohydroxy-functional, optionally branched 1-12C alkyl ester of (meth)acrylic acid. R<1>-R<3> = optionally branched 4-20C (cyclo)alkylene; X = residues of isocyanates or their secondary products with an imino-oxadiazine dione, isocyanurate, uretedione, urethane, allophanate, biuret or oxadiazine structure and groups R<1>, R<2> and R<3> attached to N An Independent claim is also included for a process for the production of urethane-acrylates by reacting an isocyanate-containing component (a) with monohydroxy-functional (meth)acrylate ester(s) (b) in an NCO/OH equiv. ratio of (0.7:1)-(1:1).