Abstract: Provided is powdered gyrolite-type calcium silicate that has a relatively large particle size, yet is endowed with both a high oil absorption and a high particle strength. The powdered gyrolite-type calcium silicate has (1) an oil absorption of at least 2.8 mL/g, (2) an average particle diameter of at least 40 ?m, and (3) in treatment where the gyrolite-type calcium silicate is charged into a laser diffraction-type particle size analyzer within the range of a diffraction volume of from 0.1 to 0.6 and circulated at a flow rate of 32.5 mL/s for 5 minutes, a percent change in average particle diameter following treatment with respect to average particle diameter before treatment of 15% or less.

Abstract: Provided is powdered gyrolite-type calcium silicate that has a relatively large particle size, yet is endowed with both a high oil absorption and a high particle strength. The powdered gyrolite-type calcium silicate has (1) an oil absorption of at least 2.8 mL/g, (2) an average particle diameter of at least 40 ?m, and (3) in treatment where the gyrolite-type calcium silicate is charged into a laser diffraction-type particle size analyzer within the range of a diffraction volume of from 0.1 to 0.6 and circulated at a flow rate of 32.5 mL/s for 5 minutes, a percent change in average particle diameter following treatment with respect to average particle diameter before treatment of 15% or less.

Abstract: A method for manufacturing a mold, including steps of (a) expanding a powder mixture containing a water-soluble inorganic salt powder and a water-soluble organic polymer powder in a plane on a table and then selectively spraying a spray liquid containing at least one selected from a water-miscible organic solvent and water through a nozzle on this powder mixture layer to make a bonding strength among particles of the powder mixture in a sprayed region higher than that among particles of the powder mixture in an unsprayed region, (b) further expanding the powder mixture on the powder mixture layer after spraying and then selectively spraying the spray liquid through the nozzle on this powder mixture layer, (c) repeatedly conducting the step (b) over several times to form a mold shaped by the sprayed regions, and (d) taking out the mold.

Abstract: A method for manufacturing a mold, including steps of (a) expanding a powder mixture containing a water-soluble inorganic salt powder and a water-soluble organic polymer powder in a plane on a table and then selectively spraying a spray liquid containing at least one selected from a water-miscible organic solvent and water through a nozzle on this powder mixture layer to make a bonding strength among particles of the powder mixture in a sprayed region higher than that among particles of the powder mixture in an unsprayed region, (b) further expanding the powder mixture on the powder mixture layer after spraying and then selectively spraying the spray liquid through the nozzle on this powder mixture layer, (c) repeatedly conducting the step (b) over several times to form a mold shaped by the sprayed regions, and (d) taking out the mold.

Abstract: A method for manufacturing a mold, including steps of (a) expanding a powder mixture containing a water-soluble inorganic salt powder and a water-soluble organic polymer powder in a plane on a table and then selectively spraying a spray liquid containing at least one selected from a water-miscible organic solvent and water through a nozzle on this powder mixture layer to make a bonding strength among particles of the powder mixture in a sprayed region higher than that among particles of the powder mixture in an unsprayed region, (b) further expanding the powder mixture on the powder mixture layer after spraying and then selectively spraying the spray liquid through the nozzle on this powder mixture layer, (c) repeatedly conducting the step (b) over several times to form a mold shaped by the sprayed regions, and (d) taking out the mold.

Abstract: A method for manufacturing a mold, including steps of (a) expanding a powder mixture containing a water-soluble inorganic salt powder and a water-soluble organic polymer powder in a plane on a table and then selectively spraying a spray liquid containing at least one selected from a water-miscible organic solvent and water through a nozzle on this powder mixture layer to make a bonding strength among particles of the powder mixture in a sprayed region higher than that among particles of the powder mixture in an unsprayed region, (b) further expanding the powder mixture on the powder mixture layer after spraying and then selectively spraying the spray liquid through the nozzle on this powder mixture layer, (c) repeatedly conducting the step (b) over several times to form a mold shaped by the sprayed regions, and (d) taking out the mold.

Abstract: An object of the present invention is to provide a hypochlorous acid based sterilizing composition which is less corrosive to metal and a method for sterilizing a subject using the same. Provided by the present application is an aqueous sterilizing composition which comprises:(a) hypochlorous acid or at least one component which can release hypochlorous acid in water, and (b) a buffering agent; wherein the concentration of available chlorine in the composition upon use is 0.0001-12%. An electrolyzed water may be used instead of component (a). A method for sterilizing a subject using the aqueous sterilizing composition of the invention is also provided.