Matsushita Electric Works, Ltd.

Panasonic Corporation

The University of Tokyo

Panasonic Electric Works Co., Ltd.

Seiko Epson Corporation

Koichi Takahama

Takeyuki Yamaki

Masaru Yokoyama

Hiroshi Yokogawa

Hirotsugu Kishimoto

Junko Ikenaga

Kazuhito Hashimoto

Toshiharu Sako

Shinichiro Miki

Mitsuo Yaguchi

Minoru Inoue

Akira Tsujimoto

Hiroshi Irie

Yuriko Uegaki

Kazuhide Kamiya

Takashi Kishimoto

Nobuhiro Ide

Mikito Nakajima

Kenji Kawano

Shigehito Deki

Takaharu Nakagawa

Katsuyoshi Takeshita

Shozo Hirao

Noboru Hashimoto

Ryozo Fukuzaki

Jun Kinoshita

Kensaku Kinugawa

Kayano Sunada

Shuji Naito

Yusuke Kutsukake

Shoichi Nakamoto

Norihiro Itou

Huogen Yu

Yasuhisa Kishigami

Syuhei Miura

Akiharu Goto

Hiroshi Yokokawa

Object of the present invention is to provide visible light-responsive photocatalyst coating material which can form a coating film exhibiting superior allergen inactivation property through irradiation of visible light. The visible light-responsive photocatalyst coating material comprises: photocatalyst material having visible light-activity composed of metal oxide particle with divalent copper salt supported on the surface thereof, said metal oxide particle having optical semiconductor-characteristics and potential of valence band of said metal oxide particle being 3[V] or more (vs. SHE, pH=0); binder component including component having siloxane bond or component forming siloxane bond through reaction; and chloride ionic compound. When visible light is irradiated to the coating film, the metal oxide particle exhibits photocatalyst activity in the presence of the copper-divalent ion and chloride ion, thereby significantly high allergen inactivation property is exhibited. Additionally, it can prevent the separation of the photocatalyst coating material from the coating film.

Visible light-responsive photocatalyst coating material, coated article, allergen inactivation method

A divalent copper salt and/or trivalent iron salt is supported on a surface of a metal ion-doped titanium oxide obtained by doping titanium oxide with metal ions to give a metal ion-doped titanium oxide with a valence band potential of 3 V or more (vs. SHE, pH=0) and a bandgap of 3 V or less between the valence band and an energy level of electrons excited from the valence band (including conduction band minimum potential and isolated potential). The metal ion-doped titanium oxide can be made to exhibit strong oxidative decomposition activity when irradiated with visible light based on the fact the divalent copper salt or trivalent iron salt functions as a catalyst for multi-electron reduction of oxygen.

Photocatalytic material, method of decomposing organic substance, interior member, air cleaning device, and device for producing oxidizing agent

The present invention provides a tungsten trioxide microparticle carrying on its surface divalent copper salt. The divalent copper salt is utilized to perform a multi-electron reduction of oxygen. The tungsten trioxide exhibits a high oxidative decomposition activity when exposed to visible light.

Photocatalyst material, method for decomposition of organic material, interior member, air purification device, and apparatus for preparation of oxidizing agent

A plastic lens includes: a plastic lens base material; a hard coat layer formed on the plastic lens base material; an organic antireflection film formed on the hard coat layer; and a primer layer between the plastic lens base material and the hard coat layer. The plastic lens base material contains at least a sulfur atom. The hard coat layer contains at least: fine metal oxide particles containing a titanium oxide having a rutile-type crystalline structure; and an organosilicon compound represented by a general formula of RSiX. The antireflection film contains a coating composition containing at least: an organosilicon compound represented by a general formula of XRSi&#x2014;Y&#x2014;SiRX; an epoxy group-containing organic compound containing one or more epoxy group in a molecule; and fine silica particles with average particle size of 1 to 150 nm, the antireflection film having a refractive index lower than that of the hard coat layer by 0.10 or more.

Plastic lens and manufacturing method of plastic lens

There is provided a composite thin film-holding substrate in which a composite thin film () comprising a filler () having a refractive index lower than that of a substrate () and a binder () having a refractive index higher than that of the filler () is formed on a surface of the substrate (). Light is efficiently scattered when passing through the composite thin film () which comprises the filler () and the binder () having different refractive indexes from each other. In addition, the refractive index of a composite thin film () comprising a filler () having a low refractive index is low. As a result, the discharge efficiency of light which passes through the composite thin film () from the substrate () to the external is improved.

Composite thin film holding substrate, transparent conductive film holding substrate, and panel light emitting body

The present invention provides a functional coated product having excellent adhesion properties of a coating to a substrate, hardly causing the deterioration of the substrate and the coating due to a photocatalyst, hardly having dirt because the smoothness of the surface coating is high, and having high photocatalytic action; a method for producing the same and the use thereof. The coated product of the present invention has the first coating layer comprising a cured coating made of an acryl-modified silicone resin coating material, which is formed on the surface of the substrate, and the second coating layer comprising a cured coating made of a functional coating material containing the photocatalyst, which is formed con the surface of the first coating layer. When producing such a coated product, the acryl-modified silicone resin coating material is applied to the surface of the substrate as the first coating layer and it is semi-cured. After that, a photocatalyst-containing functional coating material is applied to the surface of this first coating layer in a semi-cured condition and then both of the coating layers are cured. Thereby, a coated product having a higher effect can be obtained.

Functional coated product and process for producing the same and the use thereof

The present invention provides a process for forming a hydrophilic inorganic coated film on a surface of a base material, the process comprising the steps of: (1) preparing an inorganic coating composition which contains, as a major component, a silicone resin obtained by hydrolyzing and condensation-polymerizing only the tetra-functional alkoxysilane represented by the formula: Si(OR),&lsqb;wherein R represents an alkyl group having carbon atoms up to and including 7 or an aryl group&rsqb;, and has a total solid content of not more than 5% by weight; (2) applying the inorganic coating composition to a surface of the base material to form a coated layer; and (3) drying and curing the coated layer to form a cured coated film having a thickness of 0.01 to 0.5 &mgr;m. The hydrophilic inorganic coated film formed by the process of the present invention is highly hydrophilic just after the film is formed, even in the case that it is not irradiated with ultraviolet rays.

Hydrophilic inorganic coating film and composition made from alkoxysilane and silica

Antifouling silicone emulsion coating-composition, process for producing the same and antifouling article coated therewith

Functional coated product and process for producing the same and the use

A hydrophobic aerogel is fabricated by reacting a polymer having a skeleton structure of (SiO.sub.2).sub.n with a hydrophobic agent having hydrophobic groups as well as functional groups reactive to silanol groups to obtain a denatured polymer, forming a gel consisting of two phase of a dispersing medium and the denatured polymer which was performed a hydrophobic treatment, and then, supercritically drying the gel at temperature and pressure above a critical point of the dispersing medium. The hydrophobic aerogel has improved characteristics free from deterioration in light transmissivity as well as lowered thermal resistance and also free from a dimensional variation such as shrinkage which would otherwise occur by contact with moisture, so that it can maintain the excellent characteristics for long time periods. Particularly, the aerogel is useful as a material having excellent light transmissivity and thermal resistance.

Process of forming a hydrophobic aerogel

There is provided a substrate of which the surface is coated with a titanium dioxide film having a photocatalytic activity, which substrate is obtained by:

Titanium dioxide film having photocatalytic activity and substrate

A hydrophobic aerogel having excellent transparency is formed by the following process of the present invention. That is, a first gel having a SiO.sub.2 skeleton structure is prepared by hydrolysis and condensation of an alkoxysilane compound in the presence of a solvent. The solvent contained in the first gel is replaced at least partially with a medium to form a second gel. The second gel is reacted with a hydrophobic agent having hydrophobic groups as well as functional groups reactive with silanol groups under a supercritical condition of the medium to form a hydrophobic gel. The medium contained in the hydrophobic aerogel is removed by a supercritical drying method, so that the hydrophobic aerogel having improved transparency and an extremely fine porous structure is obtained.

Method for manufacturing inorganic porous layered member

A porous clay composite having fine metal particles deposited substantially only on surfaces of inorganic particles which are intercalated between layers of an expandable clay is obtained. After the expandable clay is expanded with a solvent into an expanded clay, the inorganic particles are intercalated between the layers of the expanded clay. The inorganic particles have photo-semiconducting property, that is, a plurality of carriers such as electrons and holes are released from the inorganic particles by irradiation of a light such as ultraviolet light. A solution including metal ions is mixed with the inorganic particles intercalated clay to form a mixed solution thereof. Subsequently, the light is irradiated to the mixed solution to deposit the fine metal particles substantially only on the inorganic particles which are intercalated between the layers of the expanded clay, so that the porous clay composite is formed in the mixed solution. The porous clay composite including the mixed solution is dried by a supercritical drying or a carbon dioxide extractive drying, etc., so as not to disrupt a porous structure thereof. When a metal having oxidation/reduction catalysis is used as the fine metal particles, the porous clay composite functions as an excellent oxidation/reduction catalyst.

Method of fabricating a porous clay composite including inorganic

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Amagasaki, Japan

Koichi Takahama