申请人:W.R. GRACE & CO.-CONN.
公开号:EP0618244A2
公开(公告)日:1994-10-05
A multiple curable composition is prepared from components consisting essentially of
(a) an isocyanate adduct having (i) free isocyanate groups and (ii) free photopolymerizable ethylenically unsaturated groups, wherein the ethylenically unsaturated groups comprise in the range of 10 to 70 % of the total of any free functional groups on said adduct;
(b) reactive (meth)acrylate diluents;
(c) optionally, photoinitiator and,
(d) an organic peroxide.
When cured, the above composition is particularly suitable as a conformal coating on electronic circuit boards.
多重可固化组合物由以下成分制备而成
(a) 具有 (i) 游离异氰酸酯基团和 (ii) 游离可光聚合乙烯基不饱和基团的异氰酸酯加 成物,其中乙烯基不饱和基团占所述加成物上游离官能团总数的 10% 至 70%;
(b) 反应性(甲基)丙烯酸酯稀释剂;
(c) 可选的光引发剂和
(d) 有机过氧化物。
上述组合物固化后特别适合用作电子线路板的保形涂料。