To obtain a fire-retardant composition excellent in durability and/or moisture resistance and molding workability to sheet shapes, which prevents combustion of combustibles by forming a carbonized layer excellent in shape maintenance (intensity) when expanded and foamed by heating, fire resistance and insulation properties.
The foamable fire-retardant composition contains (A) a thermoplastic resin, (B) a phosphorus compound, (C) a multifunctional alcohol, (D) an inorganic fiber material and (E) an inorganic filler, (D) the inorganic fiber material is glass fiber. (E) the inorganic filler is preferably at least one selected from the group consisting of calcium carbonate, magnesium carbonate, fused silica, crystalline silica, diatomaceous earth, clay, talc, mica, kaolin, titanium oxide, zinc oxide, aluminum oxide, carbon black, bentonite, aluminum hydroxide, magnesium hydroxide.
FUKUDA RYUJI
AOYAMA TAIZO