Compositions: coating or plastic – Coating or plastic compositions – Fog – frost or ice preventive
Patent
1999-01-15
2000-12-26
Brunsman, David
Compositions: coating or plastic
Coating or plastic compositions
Fog, frost or ice preventive
1062861, 1062863, 1062864, 1062871, 10628713, 10628714, 10628716, 10628718, 10628719, 10628734, C09K 318
Patent
active
061652563
ABSTRACT:
A composition is disclosed which can hydrophilify the surface of a member to impart an antifogging property to the surface of the member. The composition for hydrophilifying the surface of the member comprises at least (a) photocatalytic particles of a metallic oxide, (b) a precursor capable of forming a silicone resin film or a precursor capable of forming a silica film, and (c) a solvent, the total content of the photocatalytic particle and the solid matter of the precursor in the composition being 0.01 to 5% by weight. The hydrophilic property can be imparted simply by applying the composition onto a member and drying or heating the composition applied to the member. The resultant hydrophilic thin film is transparent and, hence, does not sacrifice the transparency and appearance of a member required to be transparent. Further, the surface of a member with the above composition applied thereto has such a property that water droplets adhered thereon can be immediately removed by vaporization and the surface is less likely to be soiled and, even when a contaminant is adhered thereon, can easily release the contaminant therefrom.
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Pt-Tio.sub.2 thin films on glass substrates as efficient photocatalysts (Journal of Material Science 24 (Jan. 1989), No. 1, London.
Hayakawa Makoto
Kanno Mitsuyoshi
Brunsman David
Toto Ltd.
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