| abstract |
Disclosed is an epoxy compound comprising highly pure N, N, N', N'-tetraglycidyl-3,4'-diaminodiphenyl ether. The highly pure N, N, N', N'-tetraglycidyl-3,4'-diaminodiphenyl ether is produced by means of an addition reaction step wherein, in a protic polar solvent, 3,4'-diaminodiphenyl ether is reacted with epicholorohydrin for at least 12 hours at 65-100°C, forming N, N, N', N'-tetrakis(3-chloro-2-hydroxypropyl)-3,4'-diaminodiphenyl ether, and a cyclization reaction step wherein the aforementioned N, N, N', N'-tetrakis(3-chloro-2-hydroxypropyl)-3,4'-diaminodiphenyl ether is reacted with an alkali compound, causing dehydrochlorination. |