Dopo-derived flame retardant and epoxy resin composition

A flame retardant epoxy composition comprising:

• (i) an epoxy compound;
• (ii) a compound having the following structure:
• wherein A is a direct bond, C6-C12 aryl, C3-C12 cycloalkyl, or a C3-C12 cycloalkenyl, wherein said cycloalkyl or cycloalkenyl may be optionally substituted by a C1-C6 alkyl;
• each R1, R2, R3 and R4 are independently hydrogen, C1-C15 alkyl, C6-C12 aryl, C7-C15 aralkyl or C7-C15 alkaryl;
• or R1 and R2 or R3 and R4 taken together can form a saturated or unsaturated cyclic ring, wherein said saturated or unsaturated cyclic ring may be optional substituted by a C1-C6 alkyl;
• each m is independently 1, 2, 3 or 4
• each R5 and R6 are independently hydrogen or a C1-C6 alkyl;
• each n is independently 0, 1, 2, 3, 4 or 5;
• with the proviso that when A is aryl or a direct bond, n can not be 0.