Phosphorus-containing polycyclic aromatic hydroxy compound, curable resin composition containing same, and method for producing said phosphorus-containing polycyclic aromatic hydroxy compound

A phosphorus-containing polycyclic aromatic hydroxy compound represented by general formula (1),

• wherein, in general formula (1), m is an integer of 1 to 20;
• n1 is each independently an integer of 1 to 4;
• and Ar is each independently an aromatic ring having 6 to 30 carbon atoms (excluding a benzene ring) optionally having a substituent, R1 is each independently hydrogen, a linear or branched alkyl group having 1 to 5 carbon atoms, or a substituent represented by general formula (2), provided that at least one R1 comprises a structure of the general formula (2), X represents a linking group and is each independently oxygen, sulfur, a substituted or unsubstituted cycloalkylene having 3 to 20 carbon atoms;
• or a substituted or unsubstituted aralkylene having 8 to 32 carbon atoms, and
• wherein, in general formula (2), R2 and R3 are each independently a linear or branched alkyl group having 1 to 5 carbon atoms, and n2 and n3 are each independently an integer of 0 to 5.