PROCESS FOR THE PREPARATION OF PARTICULARLY REACTIVE AND LOW-VISCOSITY ALLOPHANATES HAVING ACTINIC-CURABLE GROUPS AND THE USE THEREOF FOR THE PREPARATION OF PARTICULARLY SCRATCH-RESISTANT COATINGS

摘要

The present invention relates to a process for the preparation of particularlyreactiveand low-viscosity reaction products of polyisocyanates which contain activatedethylenically unsaturated groups which react by polymerization under theaction ofactinic radiation, and the use of these reaction products in coatingcompositions, andparticularly scratch-resistant coatings obtainable therefrom.