Abstract:
To provide a method for preparing a visible light-responsive photocatalyst and a visible light-responsive photocatalyst intermediate, a usage of a visible light-responsive photocatalyst, and the visible light-responsive photocatalyst, the method enabling arbitrary setting of the amount of solvent, thus making it possible to prepare composite fine particles of gold colloids and titanium oxide fine particles in high yield. A method for preparing a visible light-responsive photocatalyst or a visible light-responsive photocatalyst intermediate includes the step of forming a disperse system including an oil liquid containing an organic titanium complex as a dispersant, and an aqueous dispersion containing gold colloids as a dispersoid, and the visible light-responsive photocatalyst or the visible light-responsive photocatalyst intermediate enables the organic titanium complex to undergo hydrolysis to cause clathration of gold colloids, thus forming a clathrate.
Abstract:
Provided is an external agent for skin or mucous membrane excellent in feeling during use despite containing petrolatum as a base. An external agent for skin or mucous membrane according to the present invention includes an oil phase, as an inner phase, that consists of petrolatum or is a liquid or a semi-solid including petrolatum with a viscosity of 5000 mPa·s or more at 25° C. and a water-insoluble functional component phase, as an inner phase, including a water-insoluble functional component, and an aqueous phase as an outer phase, in which particles of a polycondensation polymer having a hydroxyl group and/or vesicles formed of an amphiphilic substance are present at an interface between the oil phase and the aqueous phase, and at an interface between the functional component phase and the aqueous phase.
Abstract:
Disclosed are a structure and a method capable of protecting from outside stimuli while containing in a liquid state a water-dispersible substance to be protected. The protective structure of the substance to be protected is a water-in-oil emulsion structure comprising an aqueous phase configuring a discontinuous phase containing the water-dispersible substance to be protected, an oil phase in which said aqueous phase is dispersed, and either vesicles formed with an amphiphilic substance which spontaneously forms vesicles or polycondensation polymer particles having hydroxyl groups.
Abstract:
To provide a method for preparing a visible light-responsive photocatalyst and a visible light-responsive photocatalyst intermediate, a usage of a visible light-responsive photocatalyst, and the visible light-responsive photocatalyst, the method enabling arbitrary setting of the amount of solvent, thus making it possible to prepare composite fine particles of gold colloids and titanium oxide fine particles in high yield. A method for preparing a visible light-responsive photocatalyst or a visible light-responsive photocatalyst intermediate includes the step of forming a disperse system including an oil liquid containing an organic titanium complex as a dispersant, and an aqueous dispersion containing gold colloids as a dispersoid, and the visible light-responsive photocatalyst or the visible light-responsive photocatalyst intermediate enables the organic titanium complex to undergo hydrolysis to cause clathration of gold colloids, thus forming a clathrate.
Abstract:
Provided are a process for producing an emulsifier-producing material that is capable of inhibiting variations in particle diameter among hydrophilic nanoparticles and the impairment of emulsifying functions, and a process for producing an emulsifier. The disclosed process for producing an emulsifier-producing material involves: a dispersion step of dispersing, into water, granules comprising conjugates of polycondensation polymer particles that include hydroxyl groups, to thereby prepare a dispersion; and a relaxed-product producing step of producing a relaxed product, in which the higher-order structure of said conjugates has been relaxed, by swelling the granules and cutting hydrogen bonds originating from the granules under reversible conditions. The disclosed process for producing an emulsifier involves a particle separation step of employing said emulsifier-producing material, cutting the hydrogen bonds in the conjugates, and separating the polycondensation polymer particles into water.