摘要:
A floor polishing composition containing a film-formable organic high molecular material as the main component, which further contains at least scaly particles.
摘要:
A process for producing a hardenable composition with high storage stability containing scaly silica particles which consist essentially of foliar secondary silica particles and have a laminated structure, said process comprising: (1) a step of subjecting a silica sol, a silica hydrogel or hydrous silicic acid to hydrothermal treatment in the presence of an alkali metal salt to form tertiary agglomerated particles of the scaly silica in the form of porous three-dimensional disorderly agglomerates of foliar secondary silica particles, each secondary particle being formed by a parallel face-to-face alignment of a plurality of flaky primary particles which are overlaid one on another, and (2) a step of disintegrating and dispersing the tertiary agglomerated particles of silica in an organic polymer in the form of an aqueous emulsion by a wet method.
摘要:
Scaly silica particles having a laminated structure, consisting essentially of secondary particles of foliar silica, each formed by a plurality of flaky primary particles of scaly silica which are overlaid one on another and aligned face-to-face in parallel with one another, said secondary particles being present independent of one another.
摘要:
A silica-metal oxide particulate composite comprising silica agglomerates having voids formed by random stacking of scaly silica primary particles, and metal oxide particulates supported on the surfaces, and the inner surfaces in the voids, of the silica agglomerates.
摘要:
To provide a stable water-repellent inorganic powder which is substantially free from re-dissolution of a silicon compound used for surface treatment whether an organic solvent is polar or non-polar.A water-repellent inorganic powder which is surface-treated with a silicon compound, wherein the silicon compound is one having a group reactive with the inorganic powder, and when the inorganic powder is dispersed in any of polar organic solvents and non-polar organic solvents, the retention of the silicon compound is at least 90%. Preferably, the silicon compound is an aqueous emulsion of any of methylhydrogen silicone oil, alkoxy-modified silicone oil, amino-modified silicone oil, epoxy-modified silicone oil, polyether-modified silicone oil or carboxyl-modified silicone oil, and to the aqueous emulsion, at least one surfactant selected from the group consisting of a sorbitan fatty acid ester type, a polyoxyethylene sorbitan fatty acid ester type, a polyethylene glycol fatty acid ester type, a polyoxyethylene fatty acid ester type, an N-acylamino acid type, a polyoxyethylene alkyl ether type and a polyoxyethylene alkylphenyl ether type, is incorporated.
摘要:
To provide a process of treating particulates such as an inorganic powder or resin beads to impart water repellency, to effectively impart water repellency particularly to a porous inorganic powder or the like, without use of an organic solvent as a dispersion medium of a silicone oil.Water repellent particulates are produced by a first step of adding, to particulates, an aqueous emulsion of a silicon compound such as a silicone oil to apply surface treatment to the particulates with mixing and stirring in a dry state, and a second step of heating the treated particulates to bake the silicon compound on the surface of the particulates and to separate the aqueous medium in the emulsion. The aqueous emulsion of the silicon compound is preferably an aqueous emulsion of any one of methyl hydrogen silicone oil, dimethyl silicone oil, epoxy-modified silicone oil, amino-modified silicone oil, polyether-modified silicone oil and carboxyl-modified silicone oil.
摘要:
A luminescent nanosheet has perovskite octahedral crystals combined together in a planar configuration, and the octahedral crystals each have a multistacked crystal sheet structure wherein the octahedral crystals are multistacked over at least 3 folds in the direction vertical to a sheet plane, and an element providing a luminescence center is solid-solubilized between the multistacked octahedral crystals.
摘要:
Provided is a water-swelling layered double hydroxide characterized by having an organic sulfonic acid anion (A−) between layers, and by being represented by the belowmentioned general formula (1): QZR(OH)2(Z+1)(A−)(1-y)(Xn−)y/n.mH2O . . . (1). Here, Q is a divalent metal, R is a trivalent metal, A− is an organic sulfonic acid anion, m is a real number greater than 0, and z is in the range of 1.8≦z≦4.2. Xn− is the n-valent anion remaining without A− substitution, n is 1 or 2, y represents the remaining portion of Xn−, and 0≦y
摘要:
An all-solid lithium secondary battery has excellent reliability including safety. However, in general, its energy density or output density is lower than that achieved by liquid electrolyte systems.The all-solid lithium battery includes a lithium ion-conducting solid electrolyte as an electrolyte. The lithium ion-conducting solid electrolyte is mainly composed of a sulfide, and the surface of a positive electrode active material is coated with a lithium ion-conducting oxide. The advantages of the present invention are particularly significant when the positive electrode active material exhibits a potential of 3 V or more during operation of the all-solid lithium battery, i.e., when redox reaction occurs at a potential of 3 V or more.
摘要:
The present invention relates to fine hollow powder with a titanium oxide shell, obtained by spray drying an exfoliated titania sol, and thin flaky titanium oxide powder obtained by pulverizing the fine hollow powder, and also to processes for producing the same. The present fine hollow powder and thin flaky titanium oxide powder have a distinguished dispersibility and are useful for additives to cosmetics, pigments, paints, etc., and the present fine hollow powder also has a distinguished flowability and is useful for seed particles for flow measurement.