Resin composition for forming optical components

Abstract

The objective of this invention is to provide a resin composition in which silicon dioxide nanoparticles are well dispersed in the resin without the need for physical methods such as ball milling or high-temperature reaction between the resin and silicon dioxide nanoparticles, making it suitable for forming optical components containing optical waveguides with low light scattering and low refractive index. The solution is a resin composition for forming optical components, comprising: (a) a polycondensate containing at least the substructure represented by formula (1) and the substructure represented by formula (2), (b) surface-modified silicon dioxide nanoparticles, and (c) a photopolymerization initiator; In formula (1), R2 is methyl or H, L1 is an alkyl group having 1 to 10 carbon atoms that can be substituted, In formula (2), R4 is an alkyl group having 1 to 3 carbon atoms that can be substituted, -R6-O-R7 or H, R6 is an alkyl group having 1 to 3 carbon atoms that can be substituted, R7 is an alkyl group having 1 to 3 carbon atoms or H that can be substituted, L2 is an alkyl group having 1 to 10 carbon atoms that can be substituted, X is -O- or -N(R5)-, R5 is an alkyl group having 1 to 3 carbon atoms or H that can be substituted.