| abstract |
(A) Summary (A) The following general formula (1) (Where n is an integer of 10 to 200, p and q are p = 0 to 9, q = 3-9. )) Or a mixture of the silicone diol and another polyol in a weight ratio of 60/40 to 100/0, a polyisocyanate, and a hydroxyl group-containing (meth) acrylate compound to obtain a number average molecular weight. Is 6,000-20, A urethane (meth) acrylate oligomer having a molecular weight of 000, (B) a monomer having a radical polymerizable unsaturated group, (C) A photocurable resin composition comprising a photopolymerization initiator. The photocurable resin composition of the present invention has a very small temperature dependence of the elastic modulus, and has excellent optical fiber protection performance over a wide temperature range. It is extremely useful as a resin composition for the next coating. |