Sulfur-containing phenolic resin, process for preparing the same, phenol derivatives having thioether structure or disulfide structure, process for preparing the same and epoxy resin composition and adhesive

摘要

The present invention discloses a sulfur-containing phenolic resin which comprises an organic group represented by the following formula (1): <?in-line-formulae description="In-line Formulae" end="lead"?>-R1-S-R2-S-R1- (1)<?in-line-formulae description="In-line Formulae" end="tail"?> wherein R1 represents a hydrocarbon group having 2 to 6 carbon atoms, R2 represents a hydrocarbon group having 1 to 10 carbon atoms, between a phenolic carbon and a phenolic carbon, phenol derivatives represented by the following formula (5): wherein R5 represents a C2-3 alkylene group, R6 represents a C1-10 alkylene group, G represents H, a C1-10 alkyl group, etc., and an epoxy resin composition containing (A) a curing agent of the above-mentioned formula (5) and (B) an epoxy resin as essential components.