Patent ID: 8426614

Claim:
An epoxy compound represented by Formula (I): YSiO 3/2 ) n (I) (in Formula (I), p (p is a natural number equal to n or less) groups of Y out of n groups thereof represent groups represented by any of Formulas (2a) to (5a) shown below, and (n−p) groups of Y represent a hydrogen atom or —OSiR 1 2 H; n represents an integer of 2 to 500; R 1 represents independently an alkyl group having 1 to 5 carbon atoms): (in Formulas (2a) to (5a), R 2 and R 3 each represent independently a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or a trialkylsilyl group having 3-12 carbon atoms; R 4 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or a trialkylsilyl group having 3-12 carbon atoms; R 5 to R 11 each represent independently a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or a trialkylsilyl group having 3-12 carbon atoms; R 12 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a trialkylsilyl group having 3-12 carbon atoms or an aryl group; * represents a bonding part with Si shown in Formula (I), and —X—* represents —* in which X is a single bond or a group represented by Formula (x) shown below): (in Formula (x), R 1 represents an alkyl group having 1 to 5 carbon atoms).