A photopolymerizable composition comprising a polymerizable compound and a photopolymerization initiator, wherein the polymerizable compound is characterized by comprising (a) a bifunctional (meth)acrylic acid (thio)ester compound containing a sulfur atom in the molecule and (b) at least one of a (meth)acrylic acid ester compound represented by the general formula (1) or a bifunctional (meth)acrylic acid ester compound having a urethane linkage:
wherein R
1
and R
2
are each independently a hydrogen atom or a methyl group; R
3
and R
4
are each independently an alkyl group, an aralkyl group, an aryl group or a halogen atom; m and n are each an integer of 0 to 2; X
1
is an alkylidene group having 1 to 3 carbon atoms; and Y
1
and Y
2
are each independently a poly(oxyalkylene) group with the proviso that at least one of Y
1
and Y
2
is a poly(oxyalkylene) group having a hydroxy group.
一种光聚合物组合物,包括可聚合化合物和光聚合
引发剂,其中可聚合化合物的特征在于包含(a)一种含有分子中
硫原子的双官能基(甲基)
丙烯酸(
硫)酯化合物和(b)至少一种由通式(1)表示的(甲基)
丙烯酸酯化合物或具有
脲链的双官能基(甲基)
丙烯酸酯化合物:其中R1和R2各自独立地表示氢原子或甲基基团;R3和R4各自独立地表示烷基基团、芳基烷基基团、芳基基团或卤素原子;m和n各自为0到2的整数;X1表示具有1到3个碳原子的烷基亚基团;Y1和Y2各自独立地表示聚(氧烷基)基团,但至少其中之一为具有羟基的聚(氧烷基)基团。