| abstract |
The present invention relates to an optical fiber having a photopolymerizable resin composition and an outer coating film formed using the same, and more particularly, including a low-viscosity polyfunctional urethane acrylate oligomer, the film has a low shrinkage and expansion rate after high temperature immersion, and thus has a low shrinkage and expansion rate. The present invention relates to a photopolymerizable resin composition in which the tensile strength, adhesion, and strip force ratio of an optical fiber are minimized, and an optical fiber using the same.n n n The photopolymerizable resin composition according to the present invention comprises a photopolymerizable urethane (meth) acrylate oligomer 40 to 80% by weight; 10 to 40 wt% low viscosity polyfunctional urethane acrylate oligomer; It contains 1 to 10% by weight photoinitiator. |