Triazine compounds containing phosphorous as flame retardants
The present invention relates to phosphorus-containing triazine compounds of the formula (I) and (III) and to the polymers obtainable from the water-eliminating polycondensation of a compound of the formula (II), and to the use thereof as flame retardants.
1. A polymer obtainable from the water-eliminating polycondensation of a monomeric compound of the formula (II)
where
(A-H) + is a radical of the formula (IV)
in which X is H, CN, C(NH)NH 2 , C(O)NH 2 , C(NH)NHCN, or a condensation product thereof;
c is 0, 1, 2 or 3;
or a salt thereof.
2. A compound as claimed in claim 1 , characterized in that c is 0 or 1.
3. A compound as claimed in claim 1 , characterized in that X in formula (IV) is H.
4. Method of using a compound as claimed in claim 1 , as a flame retardant in a polymer.
5. The method as claimed in claim 4 , characterized in that the polymer is a thermoplastic or thermoset.
6. The method as claimed in claim 5 , characterized in that the thermoplastic is a polyamide, polyurethane, polystyrene, polyolefin or polyester, and the thermoset is an epoxy resin.
7. A polymer containing a compound as claimed in claim 1 .
8. A polymer as claimed in claim 7 , additionally containing at least one of the compounds selected from the group consisting of melamine, melaminium phosphate and melamine cyanurate.