| 摘要 |
PROBLEM TO BE SOLVED: To provide a curable resin composition curable by both ultraviolet irradiation and heat which improves insufficient cure by active energy ray irradiation and permits decrease in its viscosity and increase in its solid content. SOLUTION: The curable resin composition comprises [A] a polymerizable unsaturated group-containing polyorthoester obtained either by reacting (a) an orthoester such as methyl orthoformate, ethyl orthoformate, methyl orthoacetate, ethyl orthoacetate or the like with (b) a glycol compound comprising anα-glycol and/or aβ-glycol and (c-3) a compound bearing a polymerizable unsaturated group and at least two hydroxyl groups, or by reacting (a) an orthoester with (b) a glycol compound and (c-1) a compound bearing at least two hydroxyl groups and a first chemically reactive group or (c-2) a compound bearing at least three hydroxyl groups and further reacting the resultant with a polymerizable unsaturated compound bearing a second chemically reactive group reactive with a hydroxyl group or the first reactive group, [B] a curing agent bearing in one molecule at least two groups reactive with a hydroxyl group and [C] a photoradical polymerization initiator.
|
