Patent ID: 8912295

Claim:
A thermosetting composition comprising: (i) an epoxy compound (A) of Formula (1): where R 1 , R 2 , and R 3 are independently a branched or linear C 1-6 alkylene group or oxyalkylene group, E 1 , E 2 , and E 3 are independently an epoxy-containing group of Formula (2): an organic group of Formula (3): (where R 4 is a hydrogen atom or a methyl group), or a hydrogen atom, and a proportion of the epoxy-containing group of Formula (2) is 85 to 98 mol % to the total number of moles of E 1 , E 2 , and E 3 , and (ii) a curing agent wherein the curing went is contained in a proportion of 0.5 to 1.5 equivalents to the epoxy group in the epoxy compound (A).