COMPOSITION FOR MAKING SPHERICAL GRANULES FOR HEAT INSULATING GRANULES Russian patent published in 2000 - IPC

FIELD: manufacture of building materials, more particularly heat insulating materials. SUBSTANCE: composition comprises liquid glass, filler and additive. Filler includes opoka composed of wt %; silica, 56-64% aluminium oxide, 3-8; Fe₂O₃ CaO, SO₃ and MgO, the balance. Additive includes intermediate product resulting from methyl methacrylate production, wt %: aluminium bisulfate, 25-35; sulfuric acid, 33-35; methyl methacrylate, 0.01-0.09; methyl acrylic acid, 0.2-0.8; and water, the balance. Ratios of components are as follows, wt % liquid glass, 47-62.5; filler, 32.5-47; and said additive, 5-6. EFFECT: higher water resistance and greater strength of products.