Ishihara Sangyo Kaisha, Ltd.

Nihon Nohyaku Co., Ltd.

Takashi Nishikawa

Kenji Kataoka

Akihito Sakai

Yoichi Ishibai

Kiyoyuki Hotta

Hideyo Ando

Yuzo Fukuda

Yorisuke Kondo

Kazuya Suzuki

Youichi Ishibai

Junya Sato

Provided is a near-infrared shielding coating agent containing: (1) an inorganic near-infrared absorbing agent; (2) a tetrafunctional silicon compound represented by general formula Si(OR1), a hydrolysate thereof, and/or a condensation polymerization product thereof; (3) a trifunctional silicon compound represented by general formula R2Si(OR3), a hydrolysate thereof, and/or a condensation polymerization product thereof; (4) a silane coupling agent represented by one of the general formulas Si(X)&#x2014;Y or R4Si(X)&#x2014;Y, a hydrolysate thereof, and/or a condensation polymerization product thereof; and (5) a solvent. This coating agent allows the formation, at an ordinary temperature between 5&#xb0; C. and 40&#xb0; C., of a near-infrared shielding film that has a high film hardness and is not prone to cracks.

Near-infrared shielding coating agent curable at ordinary temperatures, near infrared shielding film using same, and manufacturing method therefor

Disclosed is a photocatalyst which is excited when irradiated with visible light and exhibits high photocatalytic activity stably. This photocatalyst has a white hue with little yellow tint. Specifically, titanium oxide particles and a halogenated platinum compound are heated and mixed in a liquid medium, so that the surfaces of the titanium oxide particles are loaded with the halogenated platinum compound; then the pH of the liquid medium is adjusted to 5 or less; and after that, the liquid medium is neutralized if necessary. By such a process, there can be produced a photocatalyst having a specific surface area of 10-100 m/g, wherein the surfaces of the titanium oxide particles are loaded with the halogenated platinum compound and the b* value of the powder color according to the Hunter color system is not more than 6.

Visible light-responsive photocatalyst, method for producing same, photocatalyst coating agent using same, and photocatalyst dispersion

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Yokkaichi, Japan

Takashi Nishikawa