Abstract: The problem of providing a stirrer capable of more effectively shearing a fluid to be treated is addressed, by using the action of an intermittent jet stream. A stirrer is provided with a rotor having a blade and a screen, which are relatively rotated such that the fluid to be treated is discharged from the inside of the screen to the outside as an intermittent jet stream through a slit in the screen, the stirrer satisfying condition 1 and condition 2. (Condition 1) the relationship among the width b in the rotating direction of a tip part of the blade, the width s in the circumferential direction of the slit, and the width t in the circumferential direction of the screen member is b?2s+t. (Condition 2) the relationship between the width b in the rotating direction of the tip part of the blade and the maximum inner diameter c of the screen is b?0.1c.

Abstract: A device enables the more stable performance of uniform treatment such as reaction by reducing pulsation generated in a fluid introduced between treatment surfaces using a micropump effect. The device treats an object between treatment surfaces. The treatment is performed by introducing a fluid between the treatment surfaces using a micropump effect. The micropump effect generates force in the direction in which the treatment surfaces move away from each other by the rotation of a treatment part and the recessed section formed in the treatment surface to thereby produce the effect of introducing the fluid between the treatment surfaces. The recessed section is formed so as to extend in the circumferential direction and inward/outward direction of the treatment surface, and multiple recessed sections are provided or an additional recessed section (?) different from the recessed sections is formed in at least one of the treatment surfaces.

Abstract: The present invention addresses the problem of providing a novel, sold metal alloy. Provided is a metal alloy containing two or more types of metal, wherein an equilibrium diagram of the metal alloy shows the two or more types of metal in a finely mixed state at the nanolevel in a specific region where the two types of metal are unevenly distributed. This metal alloy has a substitutional solid solution of the two or more types of metal as the principal constituent thereof. This metal alloy is preferably one obtained by precipitation after mixing ions of two or more types of metal and a reducing agent in a thin-film fluid formed between processing surfaces, at least one of which rotates relative to the other, which are arranged so as to face one another and are capable of approaching and separating from one another.

Abstract: Provided are a method for producing organic material microparticles and a method for modifying organic material microparticles, whereby it becomes possible to improve the crystallinity of organic material microparticles or achieve the crystal transformation of the organic material microparticles while preventing the growth of the organic material microparticles in a solvent. A surfactant is added to a solvent that is capable of partially dissolving organic material microparticles, and then the organic material microparticles are reacted with the solvent. In this manner, it becomes possible to improve the degree of crystallization of the organic material microparticles or achieve the crystal transformation of the organic material microparticles without substantially altering the particle diameters of the organic material microparticles.

Abstract: The purpose of the present invention is to provide: composite phthalocyanine microparticles of a nano-order level, preferably on the order of 100 nm, that are optimal as a coloring material; and a method for producing the same. Provided is a method for producing composite phthalocyanine microparticles, the method being characterized by including a step (1) for preparing a dissolved solution by dissolving at least copper phthalocyanine and titanyl phthalocyanine and/or cobalt phthalocyanine as raw materials in a first solvent, a step (2) for precipitating composite phthalocyanine by mixing the dissolved solution obtained in step (1) with a second solvent that serves as a poor solvent of the abovementioned raw materials, and a step (3) for causing an organic solvent to act on the composite phthalocyanine obtained in step (2).

Abstract: Provided is a method for producing metal microparticles in which the ratio of crystallite diameter to the particle diameter of the metal microparticles is controlled. At least two types of fluid to be processed are used, including a metal fluid in which a metal or a metal compound is dissolved in a solvent, and a reducing agent fluid which includes a reducing agent. Sulfate ions are included in one or both of the metal fluid and the reducing agent fluid. The fluid to be processed is mixed in a thin film fluid formed between at least two processing surfaces, at least one of which rotates relative to the other, and which are disposed facing each other and capable of approaching and separating from each other, and metal microparticles are precipitated.

Abstract: The present invention provides a composition for coating having high ultraviolet ray protection ability for a coating material, and properties required for a coating material such as texture, appearance, designability and weather resistance. The composition is a silicon oxide-coated iron oxide composition for coating comprising iron oxide particles, a primary particle diameter of which is 1 nm or more and 50 nm or less, wherein at least a part of the surface of said iron oxide particles is coated with silicon oxide, and wherein said composition comprises an iron oxide particle dispersion having the average molar absorption coefficient of 1500 L/(mol·cm) or more for the light of the wavelengths from 190 nm to 380 nm in a state that said coated iron oxide particles are dispersed in a dispersion medium. It is preferable that the transmittance of said iron oxide particle containing dispersion for the light of the wavelengths from 200 nm to 420 nm is 2.

Abstract: The present invention addresses the problem of providing a method for producing microparticles. Composite microparticles are separated by mixing at least two kinds of fluids to be processed in a thin film fluid that is formed between approachable and separable opposing processing surfaces that relatively rotate, wherein the fluids to be processed are a metal fluid comprising at least two kinds of metal elements that are dissolved in a solvent in the form of metal and/or metal compound and a fluid for separation containing at least one kind of separating substance for separating a composite substance comprising the at least two kinds of metal elements. The molar ratio between the at least two kinds of metal elements contained in the resulting microparticles is controlled by controlling the circumferential speed of the rotation at a confluence where the metal fluid and the fluid for separation merge at this time.

Abstract: The present invention addresses the problem of providing a method for producing metal microparticles in which the particle diameter and the coefficient of variation are controlled. Using at least two kinds of fluid to be processed including a fluid which contains at least one kind of reducing agent, the fluid to be processed is mixed in a thin film fluid formed between at least two processing surfaces, at least one of which rotates relative to the other, and which are disposed facing each other and capable of approaching and separating from each other, and metalmicroparticles are separated.

Abstract: The present invention addresses the problem of providing a method for producing nickel microparticles in which the ratio of crystallite's diameter to the particle diameter of the nickel microparticles is controlled. At least two types of fluids to be processed are used, including a nickel compound fluid in which a nickel compound is dissolved in a solvent, and a reducing agent fluid in which a reducing agent is dissolved in a solvent. Sulfate ions are included in the nickel compound fluid, and polyol is included in the nickel compound fluid and/or the reducing agent fluid. The fluid to be processed is mixed in a thin film fluid formed between at least two processing surfaces (1, 2), at least one of which rotates relative to the other, and which are disposed facing each other and capable of approaching and separating from each other, and nickel microparticles are precipitated.

Abstract: The object of the present invention is to provide a composition for a laminated coating film having designability to a coated body and weather resistance. The present invention provides a composition for a laminated coating film, comprising silicon oxide-coated iron oxide particles, wherein at least a part of the surface of said iron oxide particles is coated with silicon oxide, wherein the diameter of said iron oxide particles is 1 to 50 nm, and wherein the average reflectivity of said silicon oxide-coated iron oxide particles for the light of the wavelengths of 620 to 750 nm is 25% or less. It is preferable that the transmittance of the dispersion comprising said silicon oxide-coated iron oxide particles for the light of the wavelength of 200 to 420 nm is 2.0% or less, and the transmittance of the same for the light of the wavelength of 620 to 780 nm is 80% or more.

Abstract: The problem addressed by the present invention is providing a fluid processing method including extraction that can extract material to be extracted continuously with high efficiency. In a thin film fluid formed between at least two processing surfaces (1, 2) disposed facing each other so as to be able to approach to and separate from each other such that at least one rotates relative to the other, a fluid processing that extracts at least one kind of material to be extracted in at least one kind of the extraction solvent that can extract that material to be extracted is carried out.

Abstract: This fine particle production method involves a dissolving step in which a stirrer having a rotating stirring blade is used to dissolve at least one type of fine particle raw material in a solvent to obtain a fine particle raw material solution, and a precipitation step in which the fine particle raw material solution and at least one type of precipitation solvent for precipitating the fine particle raw material from the fine particle raw material solution are introduced between at least two treatment surfaces which are arranged oppositely one another, can move closer to and farther apart from one another, and at least one of which can rotate relative to the other, and the fine particle raw material solution and the at least one type of precipitation solvent are mixed in a thin film fluid formed between the at least two treatment surfaces, and the fine particles are precipitated.

Abstract: The present invention addresses the problem of providing a method for producing nickel microparticles in which the ratio of crystallite's diameter to the particle diameter of the nickel microparticles is controlled. At least two types of fluids to be processed are used, including a nickel compound fluid in which a nickel compound is dissolved in a solvent, and a reducing agent fluid in which a reducing agent is dissolved in a solvent. Sulfate ions are included in the nickel compound fluid, and polyol is included in the nickel compound fluid and/or the reducing agent fluid. The fluid to be processed is mixed in a thin film fluid formed between at least two processing surfaces (1, 2), at least one of which rotates relative to the other, and which are disposed facing each other and capable of approaching and separating from each other, and nickel microparticles are precipitated.

Abstract: The present invention addresses the problem of providing a novel, sold metal alloy. Provided is a metal alloy containing two or more types of metal, wherein an equilibrium diagram of the metal alloy shows the two or more types of metal in a finely mixed state at the nanolevel in a specific region where the two types of metal are unevenly distributed. This metal alloy has a substitutional solid solution of the two or more types of metal as the principal constituent thereof. This metal alloy is preferably one obtained by precipitation after mixing ions of two or more types of metal and a reducing agent in a thin-film fluid formed between processing surfaces, at least one of which rotates relative to the other, which are arranged so as to face one another and are capable of approaching and separating from one another.

Abstract: The invention addresses the problem of providing a method for producing microparticles. Provided is a method for producing microparticles. For the first process, seed microparticles are separated in a thin film fluid that forms between at least two processing surfaces, which are disposed facing each other, which can approach or separate from each other and at least one of which rotates relative to the other, and the fluid comprising the separated seed microparticles is discharged as a discharge fluid. Subsequently, for the second process, the separated seed microparticles are grown in the discharged discharge fluid to obtain the intended microparticles. Uniform and homogeneous microparticles are obtained as a result of the microparticle producing method comprising the two process.

Abstract: The purpose of the present invention is to provide a method for modifying nickel microparticles weight loss of which occurs due to heat treatment such as burning and a method for producing nickel microparticles comprising the modification method. Provided is a method for modifying nickel microparticles comprising a step of making an acid and/or hydrogen peroxide act on nickel microparticles weight loss of which occurs due to heat treatment such as burning and a method for producing nickel microparticles comprising the modification method. The step of making an acid and/or hydrogen peroxide act reduces a rate of weight loss due to heat treatment of the nickel microparticles, nitric acid or a mixture of acids that include nitric acid is preferably used as the acid, and the nickel microparticles and acid and/or hydrogen peroxide are preferably made to act in a ketonic solvent.

Abstract: A method for producing single crystalline zinc oxide nanoparticles that is capable of mass production includes mixing, between processing surfaces which are disposed in a position facing each other so as to be able to approach and separate from each other and rotate relative to each other, a zinc oxide separating solvent prepared by homogeneously mixing an acidic substance with a solvent containing at least alcohol and a raw material solution obtained by mixing a zinc oxide nanoparticle raw material with a basic solvent or a raw material solution that is basic as a result of mixing and dissolving a zinc oxide nanoparticle raw material with and into a solvent, and discharging a mixed fluid in which zinc oxide nanoparticles have separated out from between the processing surfaces.

Abstract: The problem addressed by the present invention is to provide a high heat-resistant phthalocyanine. The phthalocyanine is separated by mixing a phthalocyanine separation solvent and a phthalocyanine solution wherein a phthalocyanine starting material is dissolved in a solvent. The phthalocyanine is wherein having high heat resistance, the decomposition temperature of the separated phthalocyanine being at least 10° C. higher than the decomposition temperature of the phthalocyanine starting material. Also, the phthalocyanine solution may be the result of dissolving at least two types of phthalocyanine starting material in the solvent, the separated phthalocyanine being wherein containing a solid solvent of the at least two types of phthalocyanine starting material and by the decomposition temperature of the separated phthalocyanine being at least 10° C.

Abstract: A method for increasing the production of fine particles is provided. The method uses at least two types of fluids to be processed, a raw material fluid containing at least one type of fine particle raw material and a fluid for treating the fine particle raw material. Fine particles are obtained by mixing the fluids to be processed in a thin film fluid formed between at least two processing surfaces which are disposed to be faced with each other so as to be able to approach to and separate from each other, at least one of which rotates relative to the other. The production of the fine particles is increased by introducing the raw material fluid from the centers of the processing surfaces.