Abstract: The present invention provides a refractory coating composition comprising:(i) 100 parts by weight of a hydraulic cement,(ii) 3 to 50 parts by weight of a re-emulsion type powdery resin,(iii) 50 to 600 parts by weight of a mixture of 15 to 85% by weight of aluminum hydroxide powder and 85 to 15% by weight of carbonate decomposable at a temperature of 300.degree. to 1000.degree. C., and(iv) 20 to 300 parts by weight of a lightweight aggregate having open cells at a ratio of at least 50% based on the total cells.

Abstract: The present invention provides a refractory coating composition comprising:(i) 100 parts by weight of a hydraulic cement,(ii) 3 to 50 parts by weight of a re-emulsion type powdery resin,(iii) 50 to 600 parts by weight of a mixture of 15 to 85% by weight of aluminum hydroxide powder and 85 to 15% by weight of carbonate decomposable at a temperature of 300.degree. to 1000.degree. C., and(iv) 20 to 300 parts by weight of a lightweight aggregate having open cells at a ratio of at least 50% based on the total cells.

Abstract: Refractory coating compositions comprising as the active components:(A) a water-soluble alkali metal silicate,(B) a hardening agent for the alkali metal silicate, and(C) a material having an ability to release the water contained therein in larger amounts at increased high temperatures.

Abstract: This invention provides a method for forming a refractory coating on a column or beam made of steel, the method comprising the steps of adhering panels directly or indirectly to the surface of the column or beam with a specific space between the panels and the column or beam and placing a self-hardening refractory composition into the space. The method of this invention is free from the drawbacks of conventional methods.

Abstract: A composition for preparing inorganic foamed bodies which comprises a water-soluble silicate of alkali metal and/or ammonium, a metallic blowing agent, a hardening agent for the silicate, and a foaming stabilizer as active components. Foamed bodies having outstanding properties can be prepared from the composition without application of heat or pressure.

Abstract: A process for manufacturing inorganic heat insulating material by mixing up water-soluble alkali silicate, alumina cement, metal base foaming agent and foam stabilizing agent into pasty state under presence of water. The heat insulating material manufactured by this process is of the class useful for heat insulating walls of buildings and for heat insulating plates incorporated in machinery.

Abstract: A process for preparing a foamed body comprising a step of mixing the four components of:A. an aqueous solution having a pH of up to 2.0 and containing at least one of acids and water-soluble acidic phosphates,B. at least one of cement materials and anhydrous alkali metal silicates,C. a metal blowing agent, andD. a foaming stabilizerTo obtain a pasty mixture, the acids having an electric dissociation constant (pKa) of up to 4.0 at 25.degree. C, the foaming stabilizer being at least one member selected from the group consisting of activated carbon, zeolite, silica gel, carbon black, talc and mica.