| abstract |
(57) Abstract: A phosphorus-containing epoxy resin containing a phosphorus atom having flame retardancy. A phosphorus-containing epoxy resin containing a structural unit derived from a phosphorus-containing hydroquinone derivative represented by the following general formula (1). Embedded image (R 1 and R 2 each represent a linear or branched alkyl group which may be substituted, and one or more methylene groups in the alkyl group may be replaced by -CH = CH-. And R 1 and R 2 may form a cyclic substance containing or not containing P. X represents an oxygen atom Y and Z each represent a hydrogen atom, a hydroxyl group, Represents a linear or branched alkyl group, aralkyl group, alkoxy group, allyl group, aryl group or cyano group, And Z may form a ring. ) |