Flame retardant comprising supported antimony tetroxide
Abstract
Abstract A FINELY DIVIDED INORGANIC OXIDE CARRIER POWDER IS IMPREGNATED WITH PURE ANTIMONY TRICHLORIDE, AND THEREAFTER SUBJECTED TO HYDROLYSIS IN AN AQUEOUS SYSTEM TO PROVIDE ANTIMONY OXIDE ON THE CARRIER PARTICLE. SUCH POWDER IS CALCINED AT 400-1000*C. TO PROVIDE A SUPPORTED CERVANTITE. SYNTHETIC RESINS, BOTH CELLULAR AND NONCELLULAR, CAN BE MDE MORE FLAME RETARDANT USING THE SUPPORTED CERVANTITE IN COMBINATION WITH AN ORGAINC HALIDE. THERE IS A SYNERGISTIC EFFECT OF GREATER FIRE RETARDANCY THAN WOULD RESULT FROM THE ADDITIVE EFFECTS OF THE INORGANIC POWDER AND OXIDE OF ANTIMONY. PLASTIC ARTICLES CONTAINING SUPPORTED CERVANITE HAVE AN OXYGEN INDEX OF AT LEAST 25. CERVANTITE IS THE MINERAL DESIGNATION FOR ANTIMONY TERROXIDE OF SB2O4.
Inventors
- 👤 R Mascioli
- 👤 R Petrella
Bibliographic Details
Claims Analysis
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