| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject composition having good hardenability, capable of providing a tough hardened membrane excellent in alkali resistance or the like. SOLUTION: This composition comprises (A) 30-90 wt.% unsaturated polyester having <=1 acid value, (B) 5-30 wt.% vinyl ether-based reactive diluent (e.g. ethyl vinyl ether and propyl vinyl ether), (C) 5-40 wt.% N-vinylamide-based reactive diluent (preferably N-vinylformamide) and (D) 0-30 wt.% other reactive diluent [e.g. tripropylene glycol di(meth)acrylate]. The composition can further include a photopolymerization initiator and/or an additive. For example, when hardening the composition by ultraviolet rays, about 1-15 pts.wt. photopolymerization initiator is preferably included in 100 pts.wt. composition. |
