| abstract |
(57) [Problem] To provide an optical fiber coating resin composition capable of maintaining an initial breaking strength even in a high-temperature and high-humidity atmosphere, and an optical fiber coated with a cured product of the composition. SOLUTION: A composition containing a radical polymerizable oligomer, a radical polymerizable monomer, a photopolymerization initiator and an oxirane ring-containing silane coupling agent is used as a resin composition for optical fiber coating, and the cured product is used as a primary coating layer. To form a coated optical fiber. |