FLAME RETARDANT COMPOSITION Russian patent published in 2005 - IPC

FIELD: high-molecular compounds, in particular polymeric materials with reduced inflammability.

SUBSTANCE: claimed composition contains thermoplastic polymer and phosphorus-containing flame retardant system, more particularly, mixture of heat resistant ammonium salt of aminotrismethylenephosphonic acid, pentaerythritol and zeolite in mass ratio of (60-75):(39-24):(1-1.5), respectively, in mass ratio of thermoplastic polymer/flame retardant system of (70-90)-(30-20). As thermoplastic polymer composition may contain polystyrene or polypropylene or polyethylene terephthalate, wherein optimal mass ratio of polystyrene or polypropylene/flame retardant system is (70-80):(30-20), and mass ratio of polyethylene terephthalate/flame retardant system is (90-85):(10-15).

EFFECT: thermoplastic polymers with improved flame retardant properties; reduces toxic gas releasing.

4 cl, 4 tbl, 33 ex