Epoxy resin composition, process for producing epoxy resin, novel epoxy resin, novel phenol resin

摘要

An epoxy resin composition comprises a difunctional epoxy resin (A) and curing agent (B). (A) Has a structure in which an aromatic hydrocarbon group (a1) having a bonding site in an aromatic nucleus and a hydrocarbon group (a2) having an ether bond or the other hydrocarbon group (a3) are bonded via an acetal bond (a4), and also has a structure in which glycidyloxy group is bonded to (a1). An independent claim is/are included for the following: (1) production of an epoxy resin involving reacting a difunctional phenol compound (b1) with a divinyl ether (b2) of a hydrocarbon compound having an ether bond or divinyl ether (b3) of the other hydrocarbon compound; and reacting the resulting phenol compound with epihalohydrin; and (2) new epoxy and phenol resin compounds of formula (I) to (IV): [Image] [Image] [Image] [Image] R 1and R 2H or methyl R 3-R 6H, methyl, chlorine or bromine X : ethyleneoxyethyl, di(ethyleneoxy)ethyl, tri(ethyleneoxy)ethyl, propyleneoxypropyl, di(propyleneoxy)propyl, tri(propyleneoxy)propyl or 2-15C alkylene X' : 6-17C aliphatic hydrocarbon group having cycloalkane skeleton Y : -OH or glycidyl n : natural number, with average of 1.2 - 5.