HYDROPHILIC, ANTI-FOGGING, AND ANTI-STAINING THIN FILM AND METHOD FOR PREPARATION THEREOF

Title:

HYDROPHILIC, ANTI-FOGGING, AND ANTI-STAINING THIN FILM AND METHOD FOR PREPARATION THEREOF

Document Type and Number:

WIPO Patent Application WO/2003/101904

Kind Code:

A1

Abstract:

A thin metal oxide film formed on the surface of a substrate integrally therewith, characterized in that the surface of the thin metal oxide film has an arithmetic average roughness (Ra) of 4 to 8 nm as measured by an interatomic force microscope, a maximum roughness (maximum concave-convex difference)(Rz) of 40 to 70 nm, a ten point average roughness (Rz_JIS) of 20 to 60 nm, and a pitch of concave-convex shapes is 10 to 300 nm; a method for preparing the thin metal oxide film; and a hydrophilic mirror having the thin metal oxide film. The thin metal oxide film has high hardness, is excellent in transparency, and exhibits good hydrophilicity, good anti-fogging and anti-staining property, and good self-cleaning property over a long period of time, and thus can be suitably used as a hydrophilic mirror, in particular, as an outermirror of an automobile.

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Inventors:

Ichiyanagi, Masayuki c/o TOYOTA JIDOSHA KABUSHIKI KAISHA (1 Toyota-ch, Toyota-shi Aichi, 471-8571, JP)
Sakai, Takenobu c/o TOYOTA JIDOSHA KABUSHIKI KAISHA (1 Toyota-ch, Toyota-shi Aichi, 471-8571, JP)
Takai, Noriyuki c/o KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO (260 Toyota 3-chome, Ohguchi-ch, Niwa-gun Aichi, 480-0134, JP)
Yoshida, Hiroshi c/o KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO (260 Toyota 3-chome, Ohguchi-ch, Niwa-gun Aichi, 480-0134, JP)
Fujioka, Norie c/o KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO (260 Toyota 3-chome, Ohguchi-ch, Niwa-gun Aichi, 480-0134, JP)
Sanada, Yasuhiro c/o ASAHI GLASS COMPANY (LIMITED 1150, Hazawa-cho, kanagawa-k, Yokohama-shi Kanagawa, 221-8755, JP)
Yoneda, Takashige c/o ASAHI GLASS COMPANY (LIMITED 1150, Hazawa-cho, kanagawa-k, Yokohama-shi Kanagawa, 221-8755, JP)

Application Number:

PCT/JP2003/006089

Publication Date:

December 11, 2003

Filing Date:

May 15, 2003

Export Citation:

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Assignee:

TOYOTA JIDOSHA KABUSHIKI KAISHA (1 Toyota-cho, Toyota-shi, Aichi, 471-8571, JP)
KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO (260 Toyota 3-chome, Ohguchi-cho Niwa-gun, Aichi, 480-0134, JP)
ASAHI GLASS COMPANY, LIMITED (12-1, Yurakucho 1-chome Chiyoda-ku, Tokyo, 100-8405, JP)
Ichiyanagi, Masayuki c/o TOYOTA JIDOSHA KABUSHIKI KAISHA (1 Toyota-ch, Toyota-shi Aichi, 471-8571, JP)
Sakai, Takenobu c/o TOYOTA JIDOSHA KABUSHIKI KAISHA (1 Toyota-ch, Toyota-shi Aichi, 471-8571, JP)
Takai, Noriyuki c/o KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO (260 Toyota 3-chome, Ohguchi-ch, Niwa-gun Aichi, 480-0134, JP)
Yoshida, Hiroshi c/o KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO (260 Toyota 3-chome, Ohguchi-ch, Niwa-gun Aichi, 480-0134, JP)
Fujioka, Norie c/o KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO (260 Toyota 3-chome, Ohguchi-ch, Niwa-gun Aichi, 480-0134, JP)
Sanada, Yasuhiro c/o ASAHI GLASS COMPANY (LIMITED 1150, Hazawa-cho, kanagawa-k, Yokohama-shi Kanagawa, 221-8755, JP)
Yoneda, Takashige c/o ASAHI GLASS COMPANY (LIMITED 1150, Hazawa-cho, kanagawa-k, Yokohama-shi Kanagawa, 221-8755, JP)

International Classes:

B60S1/02; B60S1/60; C03C17/00; C03C17/23; C03C17/25; G01Q30/14; G01Q60/00; (IPC1-7): C03C17/02; C03C17/25

Attorney, Agent or Firm:

Ohkawa, Hiroshi (2-5 Meieki 3-chome, Nakamura-ku Nagoya-shi, Aichi, 450-0002, JP)

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