| abstract |
The present invention provides a novel phosphorus-containing compound which can provide a curable epoxy resin composition that can be expected to be flame-retardant, lower in dielectric constant, etc. by having reactivity with a glycidyl group. The phosphorus-containing compound represented by formula (I). In formula (I), m represents a number from 1 to 10, R 1 , R 2 , R 3 and R 4 independently represent a hydrogen atom, an alkyl group or an aryl group, and R 5 represents an alkyl group, an alkanediyl group, a chain An alkanetriyl group, an alkanetetrayl group or an aromatic group, X represents an oxygen atom or a sulfur atom, Y represents an oxygen atom, a sulfur atom or =NR', and R' represents a hydrogen atom, an alkyl group or an aryl group. |