| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin composition for forming optical waveguide cores, which can be developed using dilute alkaline aqueous solution and provides cores having superior transparency and flexibility.SOLUTION: A resin composition for forming optical waveguide cores contains; (A) a polythiourethane poly(meth)acrylate obtained through reactions among (a) a polythiocarbonate polythiol, (b) an acid group-containing polyol and/or acid group-containing polythiol (d) a polyisocyanate or polyiso(thio)cyanate, and (e) a hydroxyl-containing (meth)acrylate; and (C) a photopolymerization initiator, where the (A) polythiourethane poly(meth)acrylate has an acid number of 20-200 mgKOH/g.SELECTED DRAWING: None |
