| 摘要 |
PURPOSE:The titled composition which, when applied to and cured on the surface of a resin molding, can improve the hardness, abrasion resistance, etc., of the surface without detriment to the characteristic properties inherent in the molding, prepared by mixing a specified radical-polymerizable compound with a photocrosslinking initiator. CONSTITUTION:A radical-polymerizable compound is prepared by mixing (a) 50-90wt% ester of (i) a ring-opening adduct between a polyalcohol having at least four alcoholic hydroxyl groups and caprolactone with (ii) (meth)acrylic acid (e.g., tetraacrylate of a pentaerythritol/caprolactone (1-4mol) ring-opening adduct) with (b) 50-10wt% crosslinked polymer of a compound having at least two radical-polymerizable unsaturated groups. 100pts.wt. said radical-polymerizable compound is mixed with 0.01-10pts.wt. photocrosslinking initiator (e.g., benzoin) and, optionally, 0.01-3pts.wt. light stabilizer having a cyclic hindered amine structure.
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