A composition contains the following components (A), (B), and (C), the component (A) being at least one melamine salt selected from the group consisting of melamine orthophosphate, melamine pyrophosphate, and melamine polyphosphate, the component (B) being at least one piperazine salt selected from the group consisting of piperazine orthophosphate, piperazine pyrophosphate, and piperazine polyphosphate, and the component (C) being a monohydrate of alumina. As disclosed, it is possible to provide a composition that can impart excellent levels of processability/moldability and flame retardancy to a resin by being mixed with the resin.

A composition contains the following components (A), (B), and (C), the component (A) being at least one melamine salt selected from the group consisting of melamine orthophosphate, melamine pyrophosphate, and melamine polyphosphate, the component (B) being at least one piperazine salt selected from the group consisting of piperazine orthophosphate, piperazine pyrophosphate, and piperazine polyphosphate, and the component (C) being a monohydrate of alumina. As disclosed, it is possible to provide a composition that can impart excellent levels of processability/moldability and flame retardancy to a resin by being mixed with the resin.

Flame retardant composition including: an optionally crosslinked rubber, an intumescent composition comprising a phosphate and a melamine polymer formed by combining melamine, formaldehyde, dicyandiamide, and aluminum hydroxide thereby forming the intumescent composition, a ceramic forming mixture, at least one glass additive, layered silicate nanoparticles, and optionally an antioxidant; and methods of preparation and use thereof.

A flame retardant containing composition resistant to becoming sticky from moisture is prepared by the introduction of epoxy containing compound either into the ethyleneamine polyphosphates or into the polymeric composition.

A flame retardant composition according to the present invention is a phosphate-based flame retardant including a (poly)phosphate, in which F and N satisfy 8.0×10.sup.−4≤F/N≤20.0 and F≤21.0, assuming that F (ppm) is a content of elemental iron and N (ppm) is a content of elemental sodium in the flame retardant composition as measured in accordance with the following procedure.

A flame retardant composition according to the present invention is a phosphate-based flame retardant including a (poly)phosphate, in which F and N satisfy 8.0×10.sup.−4≤F/N≤20.0 and F≤21.0, assuming that F (ppm) is a content of elemental iron and N (ppm) is a content of elemental sodium in the flame retardant composition as measured in accordance with the following procedure.

A low-corrosion fire-resistant thermoplastic resin composition comprising a thermoplastic resin, a phosphinic acid salt flame retardant, a reinforced glass fiber, and a rare earth metal salt corrosion inhibitor. The resin composition improves the corrosion resistance and mechanical performance of the metal to a great extent while maintaining the high flame resistance.

Provided are a process for preparing a flame retardant, a flame retardant obtained by the process and use of the flame retardant in a polymer composition.

Provided are a process for preparing a flame retardant, a flame retardant obtained by the process and use of the flame retardant in a polymer composition.

The invention relates to a flame retardant mixture for thermoplastic polymers, comprising as component A) 30% to 55% by weight of a zinc salt of a di-alkylphosphinic acid of the formula (I) in which R.sup.1 and R.sup.2 are the same or different and are C.sub.1-C.sub.18-alkyl linear, branched or cyclic, C.sub.6-C.sub.18-aryl, C.sub.7-C.sub.18-arylalkyl and/or C.sub.7-C.sub.18-alkylaryl, and M is zinc and m=1 to 2, as component B) 45% to 70% by weight of one or more reaction products of melamine with polyphosphoric acids and/or condensed melamine with polyphosphoric acids, as component C) 0% to 10% of at least one further inorganic flame retardant which is zinc borate, zinc stannate, zinc phosphate, zinc pyrophosphate, magnesium borate and/or calcium stannate, as component D) 0% to 20% by weight of one or more condensation products of melamine, as component E) 0% to 2% by weight of at least one phosphite or phosphinite or mixtures thereof and as component F) 0% to 2% by weight of at least one ester and/or salt of long chain aliphatic carboxylic acids (fatty acids) typically having chain lengths of C.sub.14 to C.sub.40, where the sum total of the components is always 100% by weight.

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