| 摘要 |
PROBLEM TO BE SOLVED: To provide a photocurable composition which gives a cured product having excellent heat resistance, small in deformation and useful, in particular, as an optical member. SOLUTION: The photocurable composition comprises the following components (A)-(C): (A) is at least one (meth)acrylate having a structure represented by formulae (1) and (2), respectively, [in the formulae (1) and (2), R<SP>1</SP>is a hydrogen atom or a halogen atom other than fluorine; R<SP>2</SP>is a hydrogen atom, a halogen atom other than fluorine, Ph-C(CH<SB>3</SB>)<SB>2</SB>-, Ph-or a 1-20C alkyl group; and R<SP>3</SP>is -CH<SB>2</SB>-, -S- or -C(CH<SB>3</SB>)<SB>2</SB>-], (B) is a tri- or more functional (meth)acrylate different from (A), and (C) is a photoradical polymerization initiator. The composition comprises methacrylate compounds by the amount of 5-50 wt.% of the total amount of the acrylic components. COPYRIGHT: (C)2004,JPO
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