abstract |
This resin composition for primary coating of an optical fiber contains a photopolymerizable compound, a photopolymerization initiator, and a silane coupling agent. The photopolymerizable compound includes a urethane (meth)acrylate and a UV-curable polyrotaxane. The polyrotaxane content is 0.05-11 mass% (inclusive) based on the total amount of the photopolymerizable compound. |