FLAME RETARDANT MIXTURES, FLAME-RETARDANT POLYMER COMPOSITIONS, CABLES ENDOWED THEREWITH AND USE THEREOF

摘要

Flame retardant mixtures, flame-retardant polymer compositions, cables endowed therewith and use thereof What are described are flame retardant mixtures comprising a) salt of a phosphinic acid of the formula (I) in which R₁and R₂ are independently alkyl, cycloalkyl, aryl or aralkyl that are optionally substituted, M is an m-valent cation, and m is 1 to 4, b) salt of a phosphinic acid of the formula (II) that differs from component a) in which R₃ is optionally substituted alkyl, cycloalkyl, cycloalkylalkyl, aryl or aralkyl, preferably with alkyl radicals as substituents, R₄ is alkyl with an even number of carbon atoms, with the proviso that, if R₁ and/or R₂ are alkyl, R₄ has twice, three times or four times the number of carbon atoms of R₁or R₂, M is an n-valent cation, and n is 1 to 4, c) organylphosphonate, d) phosphite, e) silicate, alumosilicate and/or silicon dioxide which is solid at 25°C, f) a representative selected from the group of triazine complex, polyphosphate, hypophosphite, nitrogen-containing diphosphate, organophosphate, phosphazene and/or polyphosphonate, g) optionally a representative selected from the group of metal hydroxide, metal carbonate, metal borate, zinc stannate and/or intumescent additive, and h) optionally pigment. The mixtures can be used for production of flame-retardant polymer compositions comprising thermoplastic and elastomeric polymers that are of excellent suitability for production of cable sheaths or cable insulations.