| abstract |
Disclosed is a liquid curable resin composition which can obtain a cured product having a high n value and has high fiber strength even after coating removal. (A) an alkoxysilane compound having no radical polymerizable functional group: 0.1 to 10% by mass, (B) a hindered amine compound: 0.01 to 1% by mass, (C) a polyol compound; Urethane (meth) acrylate obtained by reacting a polyisocyanate compound, a hydroxyl group-containing (meth) acrylate compound, and γ-aminopropyltriethoxysilane or γ-mercaptopropyltrimethoxysilane: 35 to 85% by mass, and ( D) A reactive diluent copolymerizable with the component (C): 1 to 60% by mass of a liquid curable resin composition for coating optical fibers. [Selection figure] None |