申请人:Weikard Jan
公开号:US20060051591A1
公开(公告)日:2006-03-09
The invention relates to a process for preparing binders which contain 1) allophanate groups, 2) groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation (radiation-curing groups) and 3) optionally NCO-reactive groups, by reacting at temperatures ≦130° C. A) one or more NCO-functional compounds containing uretdione groups with B) one or more compounds that contain isocyanate-reactive groups and groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation (radiation-curing groups), and then C) with one or more saturated, hydroxyl-containing compounds other than B), at least one of these compounds having an OH functionality of ≧2, in the presence of D) a catalyst containing one or more ammonium salts or phosphonium salts of aliphatic or cycloaliphatic carboxylic acids, the reaction with compounds C) taking place at least proportionally with the formation of allophanate groups. The present invention also relates to the binders obtained by the process of the invention.
本发明涉及一种制备粘合剂的方法,所述粘合剂包含1)异氰酸酯基团,2)与乙烯基不饱和化合物反应并在暴露于光辐射下聚合的基团(辐射固化基团)和3)可选的NCO反应基团,通过在温度≤130℃下反应A)一种或多种含有尿固酮基团的NCO官能化合物与B)一种或多种含有异氰酸酯反应基团和与乙烯基不饱和化合物反应并在暴露于光辐射下聚合的基团(辐射固化基团)的化合物,然后C)与一种或多种饱和的含羟基化合物(不同于B),其中至少一种化合物具有≧2的OH官能度,在存在D)含有一种或多种脂肪族或环脂族羧酸铵盐或磷酸盐的催化剂的情况下,化合物C)的反应至少与异氰酸酯基团的形成成比例地进行。本发明还涉及通过本发明方法获得的粘合剂。