Patent ID: 8532442
Filing Date: 2013-09-10
Classification: C08G,C08L,G02B,H05K

Abstract:
1. An optical waveguide-forming epoxy resin composition, comprising (A) a liquid epoxy compound, (B) a solid epoxy compound, and (C) a cationic curing initiator, wherein the liquid epoxy compound (A) includes (A1) a liquid epoxy compound represented by general formula (II) below: where R 1 and R 2 are each independently a hydrogen atom or a methyl group; R 3 to R 6 are each independently a hydrogen atom, a methyl group, a chlorine atom or a bromine atom; X is an ethylene, di(ethyleneoxy)ethyl, tri(ethyleneoxy)ethyl, propylene, propyleneoxypropyl, di(propyleneoxy)propyl, tri(propyleneoxy)propyl group, or an alkylene group of 2 to 15 carbons; and n is a positive integer which averages from 1.2 to 5.