Synergistic flame protection agent combination for thermoplastic polymers

A flameproof polymer molding compound comprising a synergistic flame retardant combination wherein the combination comprises as component A a phosphinic salt of the formula (I) and/or a diphosphinic salt of the formula (II) and/or polymers thereof,

• in which
• R1, R2 are C1-C6-alkyl and are linear or branched,
• R3 is C1-C10-alkylene and is linear or branched, C6-C10-arylene, -alkylarylene, or -arylalkylene;
• M is calcium ions, aluminum ions, or zinc ions;
• m is 2 or 3;
• n is 1 or 3;
• x is 1 or 2
• and as component B a nitrogen compound selected from the formulae (III) to (VII), and mixtures thereof
• in which
• R4 to R6 are hydrogen, C1-C8-alkyl, C5-C16-cycloalkyl or -alkylcycloalkyl, and wherein each is possibly substituted by a hydroxyl or a C1-C4-hydroxyalkyl function, C2-C8-alkenyl, C1-C8-alkoxy, -acyl, -acyloxy, C6-C12-aryl and also —O— R4 and —N(R4)R5 or N-alicyclic or N-aromatic, with the proviso that R4 to R6 are not simultaneously hydrogen,
• R7 to R11 are the same groups as R4 to R6, with the exception of substituents —N(R4)R5, N-alicyclic and N-aromatic,
• m is 1,2,3, or 4,
• n is 1,2,3, or 4,
• X is one or more acids that can make adducts with triazine compounds.

A method of using a synergistic flame retardant combination for polymers wherein the combination comprises as component A a phosphinic salt of the formula (I) and/or a diphosphinic salt of the formula (II) and/or polymers thereof,

• in which
• R1, R2 are C1-C6-alkyl and are linear or branched,
• R3 is C1-C10-alkylene and is linear or branched, C6-C10-arylene, -alkylarylene, or -arylalkylene;
• M is calcium ions, aluminum ions, or zinc ions;
• m is 2 or 3;
• n is 1 or 3;
• x is 1 or 2
• and as component B a nitrogen compound selected from the formulae (III) to (VII), and mixtures thereof
• in which
• R4 to R6 are hydrogen, C1-C8-alkyl, C5-C6-cycloalkyl or -alkylcycloalkyl, and wherein each is possibly substituted by a hydroxyl or a C1-C4-hydroxyalkyl function, C2-C8-alkenyl, C1-C8-alkoxy, -acyl, -acyloxy, C6-C12-aryl and also —O— R4 and —N(R4)R5 or N-alicyclic or N-aromatic, with the proviso that R4 to R6 are not simultaneously hydrogen,
• R7 to R11 are the same groups as R4 to R6, with the exception of substituents —N(R4)R5, N-alicyclic and N-aromatic,
• m is 1,2,3, or 4,
• n is 1,2,3, or 4,
• X is one or more acids that can make adducts with triazine compounds;
• the method comprising incorporating the combination in a thermoplastic polymer to flameproof the polymer.