| 摘要 |
Acrylic esters represented by the general formula (I); polymerizable compositions containing the esters; and cured articles and optical elements, produced by polymerizing the compositions; wherein a is an integer of 0 to 4; R1 is a single bond, optionally substituted alkylene, aralkylene, arylene, or Y3-S-R4-S-Y4- (wherein R4 is alkylene, aralkylene, or arylene; and Y3 and Y4 are each independently alkylene); R2 and R3 are each independently H or alkyl; X1 and X2 are each O or S; and Y1 and Y2 are each alkylene which may contain O or S.
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