摘要:
It is intended to provide fine grains for cosmetics which are excellent in smoothness upon application to the skin or hydrophilic nature and powdery texture. These modified inorganic fine grains comprise, on the surface of inorganic fine grains, a polymer layer (I) prepared by plasma-polymerizing one of monomers selected from among fluorinated monomers, silicone-based monomers, aromatic monomers and alicyclic monomers; a polymer layer (II) obtained by plasma graft-polymerizing a monomer having a functional group; or a polymer layer (III) prepared by plasma graft-polymerizing a monomer having a functional group modified with a functional organic compound(s). The functional organic compound(s) as described above are one or more members selected from among dyes, UV absorbers and skin-chapping inhibitors.
摘要:
The coating liquid for forming a silica-containing film with a low dielectric constant according to the present invention comprises: (i) fine particles of silica having a phenyl group thereon, and (ii') an oxidatively decomposable resin, the weight ratio of the fine particles of silica having a phenyl group to the oxidatively decomposable resin being in the range of 0.5 to 5. By virtue of the present invention, there can be formed a stable silica-containing film, which has a dielectric constant as low as 3 or less, which is excellent in microphotolithography workability, adherence to a substrate surface, chemical resistance such as alkali resistance and crack resistance, and which exhibits excellent planarizing performance.
摘要:
A coating fluid capable of forming a silica-based coating film having a relative permittivity as low as 3 or below and a low density and excellent in resistance to oxygen plasma and suitability for other processings; and a substrate having a coating film having such properties. The coating fluid is characterized by comprising a polymer composition comprising (i) an alkoxysilane represented by the following general formula (I) and/or a hydrolyzate of at least one halogenated silane represented by the following general formula (II) and (ii) a readily decomposable resin. In the formulas (I): XnSi(OR)4-n and (II) XnSiX'4-n X represents hydrogen, fluorine, C1-8 alkyl, fluoroalkyl, aryl or vinyl; R represents hydrogen, C1-8 alkyl, aryl, or vinyl; X' represents halogeno; and n is an integer of 0 to 3.
摘要:
A hydrodemetalation catalyst of a hydrocarbon oil comprising a support and a catalyst component supported by the support, and provided on a part of a catalyst surface with a coating layer made of an inactive material not substantially having a demetalation function and not substantially permeating a reaction fluid. Preferably, this catalyst has a reaction flow path inside the catalyst through which a reaction fluid flows, and is preferably having a cylindrical or honeycomb structure having a single or a plurality of through-holes. In a hydrodemetalation treatment of heavy oils using such a hydrodemetalation catalyst of a hydrocarbon oil, fixation of catalysts can be prevented, a rapid rise of differential pressures can be prevented by keeping spaces between the catalysts, and a continuous operation can be carried out for a long time.
摘要:
A thermoplastic resin film excellent in slipperiness, wear resistance and transparency. The film contains 0.005-20 wt.% of specified fine particles of a composite oxide comprising silica and at least one inorganic oxide other than silica. The film is preferably a polyester film having a haze value of 5 % or less. It is suitable for use as magnetic tape, capacitor, photographic film and pressure-sensitive adhesive tape. The film is produced by adding an alkali metal, ammonium or a silicate of an organic base and an alkali-soluble inorganic compound at the same time to an alkali solution with a pH of 9 or above, forming fine composite oxide particles without controlling the pH of the reaction mixture, adding the obtained sol to a thermoplastic resin and/or a reaction system thereof, and forming the resultant mixture into film.
摘要:
A method for forming a particle layer on a substrate comprising the steps of: developing a dispersion liquid (I) obtained by dispersing in a dispersion medium solid particles surface-treated with a compound capable of forming a binder, on a liquid (II) incompatible with the dispersion medium; removing the dispersion medium from the dispersion liquid (I) to form a particle layer in which the solid particles are arranged; and transferring the particle layer onto a substrate. The method provides a substrate with a particle layer having a high adhesion to the substrate. A method for flattening an irregular substrate surface comprises the steps of: transferring the particle layer formed by the first method to an irregular surface of a substrate; and removing portions of the particle layer formed on protuberances of the substrate. A particle-layered substrate comprises a particle layer obtained by the above methods on the substrate.
摘要:
The present invention provides a photochromic compound oxide of Ti, Fe and Si which may contain Al and a cosmetic comprising the above photochromic compound oxide which, even when a light quantity change instantaneously occurs as in taking a photographic picture with the use of flashlight, exhibits satisfactory changes in lightness and color difference in accordance with the above instantaneous light quantity change.
摘要:
A coating fluid for use in forming an electroconductive coat, which comprises (i) an oxyacid salt of zirconium, (ii) a conductive substance and, if necessary, (iii) at least one member selected from among non-precipitating silica solution, silicon alkoxides, and their derivatives. When applied on a base material, this fluid forms a transparent electroconductive coat having excellent transparency, scratching resistance, durability, and adhesion to the base material and showing an excellent antistatic effect. Particularly, a front panel of a display having excellent non-glaring and antistatic effects can be obtained by coating the base material with this fluid by spraying while keeping it at 40 to 90°C, and drying and/or baking the coated base material.
摘要:
The present invention relates to a coating liquid for forming an amorphous silica-based coating film with a low dielectric constant of 2.5 or below and the Young' s modulus of 6.0 GPa or more and having excellent hydrophobic property, and to a method of preparing the same. The coating liquid may contain a silicon compound obtained by hydrolyzing tetraalkyl ortho silicate (TAOS) and specific alkoxysilane (AS) in the presence of tetraalkyl ammonium hydroxide (TAAOH), or may contain a silicon compound obtained by hydrolyzing or partially hydrolyzing tetraalkyl ortho silicate (TAOS) in the presence of tetraalkyl ammonium hydroxide (TAAOH), mixing the reaction product with specific alkoxysilane or a hydrolysate or a partial hydrolysate thereof, and hydrolyzing all or a portion of the mixture according to the necessity. In addition, the coating liquid is prepared by mixing components described above at a specific ratio and under specific process conditions.
摘要:
An inorganic composite powder having a satisfactory covering ability and a feeling of transparency, and a cosmetic comprising the inorganic composite powder which can cover a defect on a human skin such as a wrinkle, a melasma, an ephelis or the like, while maintaining a natural feeling of appearance. The inorganic composite powder comprises a substrate in a scale form and two or more inorganic oxides laminated thereon in decreasing order of refractive index, wherein the difference in refractive index between an inorganic oxide of an outermost layer and that of a layer inside the layer is 0.6 or less, or the thickness of at least one layer of the second layer and the layers under the layer in said inorganic oxide layers falls within ±20 % of the value d defined by the formula: d = (μ x X/4)/n wherein μ, X and n represent a wave length of a visible ray, an odd integer and a refractive index of an inorganic oxide of the layer, respectively. The cosmetic preferably utilizes an inorganic composite powder having an outermost layer comprising an inorganic oxide having a refractive index of 1.5 or less.