Phosphorus-containing flame retardant curing agent, epoxy resins, advanced epoxy resins and cured epoxy resin

摘要

PROBLEM TO BE SOLVED: To provide a phosphorus-containing flame-retardant curing agent for curing a resin and for imparting flame retardancy to the cured resin.;SOLUTION: This curing agent has a specific phosphorus-containing rigid group represented by the formula (wherein R¹ and R² are each H or a 1-18C alkyl, 6-18C aryl, 6-18C substituted aryl, 6-18C arylmethylene, or 6-18C substituted arylmethylene group; and Ar is an optionally,substituted phenyl or phenoxy group).;COPYRIGHT: (C)2003,JPO