abstract |
Halogen-free, flame-resistant polymeric compositions contain an intumescence flameproofing system which comprises ammonium polyphosphate and an organophosphorus nitrogen component. The organophosphorus nitrogen component here is a phosphoric acid polyester according to the formula ##STR1## In these formulae, R is CH 2 , C 2 H 4 or C 3 H 6 , while m is 1 to 10 and n is 1 to 6. |