HEAT STORAGE MATERIAL COMPOSITION

PURPOSE: To provide a heat storage material composition resistant to the lowering of the quantity of the stored heat by the repetition of melting and freezing, from easily available raw materials, by compounding sodium sulfate decahydrate with hydrated aluminum silicate at a specific ratio. CONSTITUTION: The objective heat storage material composition is produced by compound (A) 100pts.wt. of sodium sulfate decahydrate with (B) 1W20pts.wt. (preferably 4W10pts.wt.) of hydrated aluminum silicate, and if necessary (C) a melting point modifier composed of a eutectic mixture of potassium chloride, aluminum chloride, etc. and (D) a crystal habit modifier composed of preferably sodium laurate, etc.COPYRIGHT: (C)1985,JPO&Japio