RADIATION CURING OF COATINGS
    2.
    发明申请
    RADIATION CURING OF COATINGS 审中-公开
    涂料的辐射固化

    公开(公告)号:US20120107519A1

    公开(公告)日:2012-05-03

    申请号:US13259676

    申请日:2010-03-29

    摘要: The invention relates to a process of coating a substrate with a non-aqueous coating composition comprising a) a polyol, b) a polyisocyanate crosslinker, c) a metal based catalyst for the addition reaction of hydroxyl groups and isocyanate groups, d) a thiol-functional compound at least partly deactivating the metal based catalyst, and e) a photolatent base which can be activated by actinic radiation, wherein the photolatent base prior to activation has a pKa value below 8, and wherein at least 60 mol-% of all isocyanate-reactive groups are hydroxyl groups, comprising the steps of: i) applying the coating composition to a substrate and ii) curing the coating composition.

    摘要翻译: 本发明涉及一种用非水性涂料组合物涂覆基材的方法,该组合物包含a)多元醇,b)多异氰酸酯交联剂,c)用于羟基和异氰酸酯基团的加成反应的金属基催化剂,d)硫醇 官能化合物至少部分地使所述金属基催化剂失活,以及e)可以通过光化辐射活化的光引发剂碱,其中在活化之前所述光致变色碱基具有低于8的pKa值,并且其中至少60mol%的全部 异氰酸酯反应性基团是羟基,包括以下步骤:i)将涂料组合物施加到基材上,和ii)固化涂料组合物。