| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a liquid curable resin composition suitable for an optical fiber coating material and giving a coating layer excellent in heat resistance. Ž<P>SOLUTION: The liquid curable resin composition for an optical fiber coating material contains, with respect to the 100 mass% of the whole composition, (A) the 30 to 80 mass% of a urethane (meth)acrylate having a structure derived from at least one kind of polyol selected from polyester polyol and polyether polyol, (B) the 5 to 50 mass% of an acrylamide compound expressed by a formula (1), and (D) the 0.1 to 10 mass% of a polymerization initiator. In the formula, R<SP>1</SP>represents a hydrogen atom or a methyl group, and R<SP>2</SP>and R<SP>3</SP>represent 1C-4C straight-chain or branched alkyl groups. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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