abstract |
[Problem] To provide a photopolymerization sensitizer which gives a practically sufficient photocuring rate without arousing the problem wherein additives including a photopolymerization sensitizer bleed out to the surface during photocuring or during storage of the cured object to cause blooming or coloration to the cured object.n[Solution] An oligomer of a 9,10-bis(substituted oxy)anthracene compound, the oligomer having repeating units represented by general formula (1).n(In general formula (1), n, indicating the number of repetitions, is 2-50; X and Y may be the same or different and each represent a hydrogen atom, a C 1-8 alkyl group, or a halogen atom; and A represents a divalent substituent.) |