Process for producing tetraepoxy resins, epoxy resin compositions, tetraepoxy resins and tetrahydric phenol compounds
申请人:DAINIPPON INK AND CHEMICALS, INC.
公开号:EP0465738A2
公开(公告)日:1992-01-15
An epoxy resin represented by formula
wherein R₁ to R₁₂ each denote a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and X denotes an oxygen atom, a sulfur atom, a methylene group or an ethylene group.