摘要:
An object of the present invention is to provide a clay dispersion liquid which is capable of obtaining a clay film which realizes compatibility between heat resistance and water resistance, and a method for producing the same; a clay film and a transparent material, produced from the lay dispersion. The clay dispersion liquid of the present invention contains a liquid containing water as a main component, and a tetraphenylphosphonium-modified clay. The clay film and the transparent material of the present invention are obtained by applying the clay dispersion liquid on a surface of a supporting body to form a film.
摘要:
The present invention provides: a method for synthesizing a halogen-substituted saccharide from a leaving group-substituted saccharide in a short-time and continuously; a reaction composition; and a device for synthesis of same, i.e., the method being for synthesizing a halogen-substituted saccharide from a leaving group-substituted saccharide by a halogen-substituted saccharide synthesis reaction using a subcritical fluid or a supercritical fluid as the reaction solvent; the reaction composition of the same being an aqueous solution of halogen-substituted saccharide; and the device for synthesis being a device for producing the same, the method being for producing a halogen-substituted saccharide with a subcritical fluid or a supercritical fluid at a temperature of 100 to 400° C. and a pressure of 0.1 to 40 MPa or a mixed solvent of aprotic organic solvent or inorganic solvent mixed therein as the reaction solvent, under catalyst-free condition, by introducing the leaving group-substituted saccharide and the reaction solvent into a circulating-type high-temperature and high-pressure device to produce selectively a halogen-substituted saccharide while reducing the amount of energy consumption and the amount of waste, at high yield, high selectivity, high speed and continuously.
摘要:
The present invention provides a porous alumina self-supporting film which has a sufficient strength to be used as a self-supporting film, is flexible and has a high transparency; an alumina sol that is composed of fibrous or needle-like boehmite particles dispersed in a solution and that has a high storage stability; and methods for producing such a film and such an alumina sol. More specifically, the invention provides a porous alumina self-supporting film which is composed of a collection of fibrous or needle-like alumina hydrate particles or alumina particles having an average breadth of 1 to 10 nm, an average aspect ratio (length/breadth) of 30 to 5,000 and an average length of 100 to 10,000 nm, has an orientation, has a pore distribution with a pore diameter dpeak of 0.5 to 20 nm, is flexible, has a high transparency, and has the ability to luminesce when excited by ultraviolet light; an alumina sol which has a Na, K and SO4 content of 0 to 1 ppm, has an orientation when the particles are collected, and luminesces when excited by ultraviolet light after being fired at 250 to 900° C.; and methods for producing such a film and such an alumina sol.
摘要:
The present invention provides a clay film with excellent flexibility, whose main component is natural clay or synthetic clay, and in which there is uniform orientation in the clay particle layer, and relates to a novel clay film that has enough mechanical strength to be used as a self-supporting film, and has a structure in which layers of clay particles are highly oriented, and in which the main constituent component of the clay film is mica, vermiculite, montmorillonite, iron montmorillonite, beidellite, saponite, hectorite, stevensite, or nontronite, and which has excellent flexibility, undergoes no structural change at high temperatures of 250° C. and up to 600° C., contains no pinholes, and has a gas permeation coefficient of less than 3.2×10−11 cm2s−1cmHg−1 at room temperature for helium, hydrogen, oxygen, nitrogen, or air.
摘要:
A method of manufacturing crystalline microporous material suitable for manufacturing a variety of crystalline microporous material under mild reaction conditions and under safe working environmental conditions by using simple installation. The crystalline microporous materials obtained by the present invention may be used as adsorbent agent, catalyst or separating material. According to the characterizing features of the manufacturing method of the present invention, there are provided a method of using cation compound or amine as crystallizing modifier and using, in combination, raw material including canemite or silicon dioxide and a further method using raw material including silicon dioxide and aluminum salt. The method includes a step of mixing these components, a solid-liquid separating step for separating produced fine particles, and a crystallizing step for crystallizing the separated solid component. The invention achieves improvement in safety, economy and so on, in comparison with the coventionally practiced hydrothermal synthesis method which requires severe reaction conditions of high-temperature, high-pressure and strong alkaline. Further, the method allows freedom in adjustment of the pore diameter and allows a higher proportion of porous structure to be maintained in a product when the material is formed into a molded product.
摘要:
A catalyst for the decomposition of hyderazine is produced by impregnating alumina with a solution of iridium salt in a solvent and then drying and firing it. In this case, ethyl alcohol is used as a solvent. Such a catalyst has high catalytic activity and durability.
摘要:
The present invention provides a novel technology and a novel material having excellent pliability, gas barrier properties and water resistance, for the technical fields of packaging materials, sealing materials, electric insulating materials and the like, the present invention relates to a film of a material having a denatured clay as a main constituent thereof, wherein (1) the film comprises a denatured clay and an additive, (2) the weight ratio of the denatured clay is not less than 70% relative to total solids, (3) the film has gas barrier properties and water-vapor barrier properties, (4) the film has heat resistance, (5) the film has water resistance, (6) the film has sufficient mechanical strength to be used as a self-supporting film, and (7) the film can be formed on the surface of metals, plastics, rubber, paper and the like, and the present invention can provide a material comprising the denatured clay film in which denatured clay particles are highly oriented and which has excellent heat resistance, excellent pliability, excellent gas barrier properties, excellent water-vapor barrier properties, and high water resistance.
摘要:
The present invention provides a clay film and a member thereof, having low moisture permeability and gas permeability, having mechanical strength enabling use as a self-supporting film, having high flexibility and high heat resistance, being an electrical insulator and having low thermal conductivity; a clay film comprising clay alone, clay and a small amount of a reinforcing material, or clay, a small amount of an additive and a small amount of a reinforcing material and subjected to surface treatment; a clay film comprising clay and a small amount of a reinforcing material, or clay, a small amount of an additive and a small amount of a fibrous reinforcing material, and having gas impermeability; a multilayer film comprising a fabric and clay and having a composite multilayer structure comprising a clay layer and a fabric; and, an adhesive clay film having clay for a main component thereof and a single layer or multilayer structure in which an adhesive layer is preset on the clay film.
摘要:
The present invention provides a novel technology and a novel transparent material having high thermal stability, excellent pliability, surface smoothness, dimensional stability and gas barrier properties, for the technical fields of packaging materials, sealing materials and display materials, and the invention relates to an inorganic layered compound film having oriented inorganic layered compound particles, exhibiting high surface smoothness, high dimensional stability, high transparency, excellent pliability, excellent gas barrier properties and high heat resistance, that is obtained by dispersing an inorganic layered compound of high transparency and a small amount of water-soluble polymer of high transparency in water or a liquid having water as a main component thereof, to thereby obtain a homogenous dispersion containing no agglomerates, applying thereafter this dispersion onto a support having a flat and water-layered compound particles, and separating the liquid, as a dispersion medium, according to any of various solid-liquid separation methods, for example, centrifugation, filtration, vacuum drying, vacuum freeze drying, evaporation by heating or the like to thereby attain formation into a film shape, and optionally followed by methods such as drying/heating/cooling to thereby effect detachment from the support.
摘要:
A clay thin film substrate including a clay thin film having a structure, in which oriented clay particles are laminated; and at least a gas barrier inorganic layer which is laminated on at least one surface of the clay thin film.