DIFFICULTLY COMBUSTIBLE THERMOPLAST-BASED COMPOSITE MATERIAL Russian patent published in 2000 - IPC

FIELD: manufacture of cheap roofing materials, warm floors and other building materials. SUBSTANCE: described is difficultly combustible composite material comprising polymer, mineral filler and antipyrene additive. Antipyrene additive is mono- or disubstituted ammonium phosphate or mixture thereof and calcium or magnesium carbonate thereof or mixture thereof, ratios of components being as follows, wt %: polymer, 12-25; mono- or disubstituted ammonium phosphate or mixture thereof, 17-23; calcium or magnesium carbonate or mixture thereof, 1-12; and the filler balance. EFFECT: satisfactory physical and chemical properties of difficultly combustible materials based on various thermoplastic and mineral fillers. 3 cl, 3 tbl