PHOTOCATALYST POWDER FOR PURIFYING ENVIRONMENT, POLYMER COMPOSITION CONTAINING THE POWDER AND ITS MOLDING, AND PRODUCTION OF THESE

Japanese Patent JP3493393

B2

PROBLEM TO BE SOLVED: To improve the durability of a photocatalyst powder for purifying environment to be added into organic fibers and others by kneading and others, by making an anionic surfactant exist on an interface between a titanium dioxide fine particle and a porous calcium phosphate coating layer formed on a part of its surface.
SOLUTION: In the photocatalyst powder for purifying environment which can purify environment effectively, economically, and safely, a powder, in which a porous calcium phosphate coating layer is formed on a part of the surface of a titanium dioxide fine particle, is prepared, an anionic surfactant is made to exist on the interface between the coating layer and the particle. When the photocatalyst powder is supported on an organic polymer medium such as organic fibers by kneading, embedding, and other means and used, the durability is made able to be improved without deteriorating the medium. The titanium dioxide fine particles to be used are preferably a substance the average particle diameter of the primary particles of which is 0.001-0.2 micron.

Hiroshi Taota
Toru Nonami
Katsura Ito
Hiroyuki Hagiwara

JP37668498A

February 03, 2004

December 25, 1998

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National Institute of Advanced Industrial Science and Technology
SHOWA DENKO K.K.
Hiroshi Taota
Toru Nonami

A61L9/16; A61L9/20; B01J2/00; B01J2/20; B01J31/38; B01J33/00; B01J35/02; B01J37/03; C01B25/32; C01G23/04; C01G23/07; C02F1/32; C02F1/72; D01F1/10; A61L9/01; (IPC1-7): B01J35/02; A61L9/20; B01J2/00; B01J2/20; B01J31/38; B01J33/00; B01J37/03; C01B25/32; C01G23/04; C02F1/32; C02F1/72; D01F1/10

JP8322923A
JP952052A
JP62101496A
JP9299809A
JP769691A
JP9262481A
JP10193500A
JP4308513A

Yukio Uchida
Yukio Uchida

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