Flame retardant halogen-free.

Flame retardant halogen for incorporation into a polymer matrix, wherein the flame retardant contains at least the following components A, B, and C and optionally the component D: A: polyphosphate (s) of ammonium and / or derivatives B: 1,3,5-triazine oligomeric or polymeric or mixtures of several of them of the general formula ** (See formula) ** wherein X is a morpholino radical, a piperidino radical or a group derived piperazine, Y is a divalent group derived from piperazine and n is an integer greater than 1; C: compounds selected from phosphate monozinc, zinc borate, phosphate trizinc, zinc pyrophosphate, polyphosphate, zinc, zinc hydroxystannate, zinc stannate, boron phosphate, monoaluminium phosphate, phosphate trialuminium metaphosphate, aluminum and mixtures of them, D: precondensed melamine derivatives, melamine salts and adducts, ethylenediamine phosphate, piperazine phosphate, piperazine polyphosphate, 1,3,5-trihydroxyethyl isocyanurate, 1,3,5-triglycidyl isocyanurate triallyl wherein the weight ratio of component a to component B is from 10: 1 to 1: 1 and components a and B are together 60 to 99 wt% and the components C and D are together 1 to 40% by weight of the total weight of components A, B, C and D.