phosphonamidate compound, method of improving the flame resistance of a polymeric material, polymeric material with improved flame resistance, method of making a phosphonamidate, and use of phosphonamidate compound

摘要

The invention relates to a group of novel compounds containing one or more amino substituted DOPO (9,10-dihydro-9-oxa-phosphaphenthren-10-oxide) moieties. The compounds were found to have good flame retardant properties and also good thermal stability, which makes them particularly suitable as flame retardant additives for various thermoplastic polymers. In particular, they can be incorporated in a flexible polyurethane foam.