Abstract: Provided is a hollow particle, including silica, having a DSL of primary particles that satisfies the following expression (1), and having a breaking strength of 10 MPa or more: 1?DSL?1.5 . . . (1) where DSL=D75L/D25L, and D25L and D75L represent a 25th value and a 75th value, respectively, when long diameters of 100 randomly selected primary particles are measured in observation with a scanning electron microscope and sorted in order of increasing size.

Abstract: Provided is an activator for a growth medium used for artificial cultivation of mushrooms, and the activator is used in a growth medium for mushroom artificial cultivation and improves and stabilizes the yield. The activator for a mushroom growth medium includes, as antacid inorganic substances, aluminum, calcium, and magnesium. By changing the proportion of each element, the neutralization function is adjusted. By adding a small amount of the activator, an optimum cultivation pH for an intended type of mushroom is achieved, and the optimum cultivation pH can be maintained.

Abstract: A resin composition has excellent thermal conductivity. The thermally conductive resin composition includes: a resin; a first thermally conductive filler having an aspect ratio of 10 or more and a long diameter of less than 30 ?m; and a second thermally conductive filler having an aspect ratio of 2 or less.

Abstract: With respect to a plate-shaped hydrotalcite in which the average width of primary particles is increased, (1) the aspect ratio of secondary particles is increased by suppressing aggregation of primary particles by relatively reducing the average thickness thereof, and 2) the formation of a by-product that impairs the transparency of a resin is suppressed. Provided is a plate-shaped hydrotalcite represented by a formula (1) below: (M2+)1?x(M3+)x(OH)2(An?)x/n·mH2O??(1) where M2+ indicates at least one divalent metal, M3+ indicates at least one trivalent metal, An? indicates an n-valent anion, n indicates an integer of 1 to 6, and x and m are within respective ranges of 0.1?x?0.

Abstract: [Problem] To provide a magnesium hydroxide-based solid solution which has smaller primary particles and secondary particles and improved reactivity with an acid as compared with conventional magnesium hydroxide (Mg(OH)2), improves the flame retardancy and mechanical strength of a resin, and also forms a non-sedimenting slurry, providing the same handleability as a liquid. [Structure] A magnesium hydroxide-based solid solution represented by the following formula (1): Mg(OH)2-xRx (Formula 1), wherein R represents a monovalent organic acid, and x represents 0<x<1. The magnesium hydroxide-based solid solution is a magnesium oxide (MgO) precursor. A flame retardant for a synthetic resin, including the magnesium hydroxide-based solid solution as an active ingredient. A synthetic resin composition characterized by including 0.1 to 50 parts by weight of the magnesium hydroxide-based solid solution (b) per 100 parts by weight of a synthetic resin (a); and a molded article thereof.

Abstract: An agent for reduction of the acid value of used cooking oil that exerts the effects required for a regeneration agent for used cooking oil, and a regeneration treatment method for used cooking oil using it are provided. The agent is an agent for reduction of the acid value of used cooking oil containing a hydrotalcite-related compound as an effective component, wherein the agent has a decoloration capacity that reduces the acid value by 70% or more. The agent also has a deacidification capacity that reduces yellowness due to deterioration by 15%. The hydrotalcite-related compound is a hydrotalcite-related compound calcined at 150 to 400° C. The hydrotalcite-related compound is a hydrotalcite-related compound granulated to have an average particle size of 50 to 200 ?m.

Abstract: A magnetic hydrotalcite composite which is useful in fields such as wastewater treatment, ultraviolet absorption, electromagnetic wave absorption and acid gas absorption, and a production method thereof. The magnetic hydrotalcite composite comprises an inner layer and an outer layer, in which the inner layer is made of a hydrotalcite compound and the outer layer is made of a ferrite compound.

Abstract: Fibrous basic magnesium sulfate having excellent acid resistance. A fibrous powder comprising the fibrous basic magnesium sulfate, and an anionic surfactant (A) and a cationic surfactant (B), both coating the surface of the fibrous basic magnesium sulfate.

Abstract: [Problem] To provide a magnesium hydroxide-based solid solution which has smaller primary particles and secondary particles and improved reactivity with an acid as compared with conventional magnesium hydroxide (Mg(OH)2), improves the flame retardancy and mechanical strength of a resin, and also forms a non-sedimenting slurry, providing the same handleability as a liquid. [Structure] A magnesium hydroxide-based solid solution represented by the following formula (1): Mg(OH)2-xRx (Formula 1), wherein R represents a monovalent organic acid, and x represents 0<x<1. The magnesium hydroxide-based solid solution is a magnesium oxide (MgO) precursor. A flame retardant for a synthetic resin, including the magnesium hydroxide-based solid solution as an active ingredient. A synthetic resin composition characterized by including 0.1 to 50 parts by weight of the magnesium hydroxide-based solid solution (b) per 100 parts by weight of a synthetic resin (a); and a molded article thereof.

Abstract: Magnesium hydroxide having low glossiness and acid resistance which is required for coatability. The magnesium hydroxide is coated magnesium hydroxide comprising magnesium hydroxide and colloidal silica coating the surface thereof, wherein (A) the coating amount of colloidal silica is 0.1 to 20.0 wt % in terms of SiO2 based on 100 wt % of magnesium hydroxide; and (B) the coated magnesium hydroxide has a long diameter (width) of 0.5 to 20 ?m, a thickness of 0.01 to 0.5 ?m and an aspect ratio of not less than 10.

Abstract: A treating agent for the examination or operation of the large intestine which has high examination precision or facilitates an operation and can be administered with a small amount of water. The treating agent for the examination or operation of the large intestine contains magnesium oxide particles and is used to be orally administered before an examination or operation.

Abstract: A resin composition which overcomes the defects of needle-like basic magnesium sulfate and has good balance among mechanical strength, molding productivity and the appearance of a molded article. The resin composition comprises (i) 100 parts by weight of a resin (component A), (ii) plate-like magnesium hydroxide having a crystal thickness (y) of 0.2 ?m or less, a crystal width (x) of 3.5 to 10 ?m and an aspect ratio of 20 to 100 (component B) and (iii) needle-like basic magnesium sulfate (component C), wherein the total content of the components B and C is 1 to 100 parts by weight based on 100 parts by weight of the resin, and the weight ratio of the component B to the component C is 0.1 to 0.9:0.9 to 0.1.

Abstract: A resin composition which exhibits an excellent heat-retaining property without reducing transparency when it is used as an agricultural film. The resin composition comprises 100 parts by weight of a resin and 1 to 20 parts by weight of a heat-retaining agent which is represented by the following formula (1) and has a difference between the molar ratio obtained from 2? of the (110) plane by an X-ray diffraction method and the molar ratio obtained by chemical analysis of not more than 0.7 (the molar ratio is an Mg/Al2 value). MgXAl2(OH))2X+4(CO3).mH2O??(1) (In the above formula, X satisfies 4.0<X?6.5, and “m” is 0 or a positive number.

Abstract: A magnetic hydrotalcite composite which is useful in fields such as wastewater treatment, ultraviolet absorption, electromagnetic wave absorption and acid gas absorption, and a production method thereof. The magnetic hydrotalcite composite comprises an inner layer and an outer layer, in which the inner layer is made of a hydrotalcite compound and the outer layer is made of a ferrite compound.

Abstract: A method of reducing the strontium ion concentration of an aqueous solution. The method of reducing the strontium ion concentration of an aqueous solution, comprises the step of: reacting a soluble compound (A) of at least one metal selected from the group consisting of calcium and magnesium with a soluble alkali carbonate (B) in an aqueous solution containing a strontium ion to produce a metal carbonate and incorporate the strontium ion into the metal carbonate.

Abstract: A magnesium hydroxide particle having a BET specific surface area of 80 m2/g or more and a manufacturing method thereof. The magnesium hydroxide particle has a BET specific surface area of 80 to 400 m2/g and is represented by the following formula (1): Mg(OH)2-x(CO3)0.5x.mH2O??(1) wherein x and m satisfy the following conditions: 0.02?x?0.7. 0?m?1.

Abstract: Magnesium hydroxide having a high aspect ratio, a production method thereof and a resin composition comprising the same. The method of producing the magnesium hydroxide having a long diameter (width) of not less than 0.5 ?m and aspect ratio of not less than 10, comprising the steps of: (A) adding an alkali to and coprecipitating it with a mixed aqueous solution of a water-soluble magnesium salt and a monovalent organic acid or a salt thereof, or (B) adding an alkali aqueous solution to and coprecipitating it with an aqueous solution of a water-soluble magnesium salt and adding a monovalent organic acid or a salt thereof to the resulting product; and (C) hydrothermally treating the obtained slurry at 100° C. or higher.

Abstract: A treating agent for the examination or operation of the large intestine which has high examination precision or facilitates an operation and can be administered with a small amount of water. The treating agent for the examination or operation of the large intestine contains magnesium oxide particles and is used to be orally administered before an examination or operation.

Abstract: It is an object of the present invention to provide magnesium oxide particles which have a high aspect ratio and are loosely aggregated. The present invention is the magnesium oxide particles have an aspect ratio measured by a scanning probe microscope of 3 to 10.

Abstract: Hydrotalcite particles having an extremely small average secondary particle diameter and a production process therefor. A resin composition comprising hydrotalcite fine particles and having excellent transparency and a molded article thereof. The hydrotalcite fine particles have an average secondary particle diameter measured by a dynamic light scattering method of 5 to 100 nm.