| abstract |
The present invention relates to the production of organophosphorus compounds, in particular DOPO (9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) or derivatives thereof, which have been known for several years in the prior art. They are preferably used as additives for the polymer. In particular, the use of DOPO and derivatives as flame retardants of polymers such as polyesters, polyamides, epoxy resins and the like has proved advantageous. |