| abstract |
PROBLEM TO BE SOLVED: To provide an ultraviolet curable resin providing an ultraviolet curable resin composition having excellent photocurability and adhesiveness and little yellowing. (A) At least one diol component selected from the group consisting of polypropylene glycol, polybutylene glycol, a copolymer of 1,2-butylene oxide and ethylene oxide, and a copolymer of propylene oxide and ethylene oxide, It contains urethane (meth) acrylate obtained from diisocyanate and hydroxyl group-containing (meth) acrylate, and (B) a radical polymerizable compound, and (C) as a photopolymerization initiator, absorbance at 365 nm of a 0.1% by mass solution. The ultraviolet curable resin composition which contains only the photoinitiator whose optical path length (1 cm) is 0.2 or more in the ratio of 0.1-15 mass%. [Selection figure] None |