| abstract |
(57) [Abstract] [Purpose] As an optical fiber clad material, the increase in transmission loss is small, the adhesiveness with the core material is excellent so as not to cause the decrease in the strength of the optical fiber, and the deterioration of the fiber characteristics is prevented even in the long-term test. A small amount of resin composition is provided. [Structure] To a resin composition comprising a polymer and a reactive monomer, a coupling agent and a condensation reaction accelerating catalyst such as aluminum acetylacetone are added. |