LIQUID, RADIATION-CURED COATING COMPOSITION FOR GLASS SURFACES

摘要

The present invention relates to radiationcurable oligomers which can be prepared from a) one hydroxy- and/or aminofunctional compound having a functionality between 3 and 4 and a number-average molecular weight between 500 and 4000, b) one compound having 2 hydroxy and/or amino groups and a number-average molecular weight between 200 and 4000, c) one monoethylenically unsaturated compound having a group containing one active hydrogen atom and having a number-average molecular weight between 116 and 1000, and d) one aliphatic and/or cycloaliphatic diisocyanate, which comprises using components a to d in amounts such that 1. the molar ratio of component a to component b is between 0.1 and 1.1, 2. the molar ratio of component c to component a is between 2.0 and 10, and 3. the equivalent ratio of the isocyanate groups of component d to the hydroxyl and/or amino groups of the sum of components a to c is between 0.9 and 1.0.