abstract |
This invention discloses a phosphorus-containing flame retardant resin which comprises more than one of DOPO (9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) and more than two carbonyl groups in structure. This resin is used in epoxy resin, epoxy resin composition, epoxy resin curing agent, composition of epoxy resin curing agent, polyester resin and polyester resin composition. |