FIELD: chemistry.
SUBSTANCE: fire-resistant composition of thermoplastic polyurethane consists of the following components, wt %: thermoplastic polyurethane 35-85, organic phosphorus-containing fire-retardant agent 0.5-15, dipentaerythritol 0.5-10, talc 0.5-5, melamine derivative 5-35. The composition contains thermoplastic polyurethane with equivalent ratio of diisocyanate and alcohol groups in diol and polyol of 0.95-1.10. The organic phosphorus-containing fire-retardant agent used is phosphinate, diphosphinate or a high-molecular weight derivative thereof. The melamine derivative used is melamine cyanurate, melamine phosphate, melamine polyphosphate or melamine borate.
EFFECT: high fire-resistance and flame-retardation due to initiated charcoal formation during combustion.
10 cl, 1 tbl, 8 ex
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