| 摘要 |
The present invention relates to: a resin composition for forming an optical waveguide, containing (A) a polymer having a hydroxyl group and/or a carboxyl group, (B) a (meth)acrylate having a urethane bond, (C) a polyfunctional blocked isocyanate compound, and (D) a radical polymerization initiator; a resin film for forming an optical waveguide, containing the resin composition for forming an optical waveguide; and an optical waveguide containing a lower cladding layer, a core part and an upper cladding layer, at least one of which contains the resin composition for forming an optical waveguide or the resin film for forming an optical waveguide. The present invention provides a resin composition for forming an optical waveguide that can form a high precision thick film excellent in transparency, heat resistance and toughness and is useful for a resin film for forming an optical waveguide having high productivity; a resin film for an optical material containing the resin composition for forming an optical waveguide; and a resin composition for forming an optical waveguide, a resin film for forming an optical waveguide, and an optical waveguide excellent in transparency, heat resistance, environmental reliability and toughness, using the same.
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