ARTICLE WITH ORGANIC/INORGANIC COMPOSITE COATING FORMED AND PROCESS FOR PRODUCING THE SAME

Title:

ARTICLE WITH ORGANIC/INORGANIC COMPOSITE COATING FORMED AND PROCESS FOR PRODUCING THE SAME

Document Type and Number:

WIPO Patent Application WO/2005/095101

Kind Code:

A1

Abstract:

An article with organic/inorganic composite coating formed, wherein the organic/inorganic composite coating is composed mainly of silica and will not be detached from the base material after Taber's abrasion resistance test prescribed in Japanese Industrial Standards (JIS) R 3212. This composite coating can be formed by a sol gel process from a coating liquid containing a hydrophilic organic polymer. In this liquid, for example, the amount of silicon alkoxide in terms of SiO₂ concentration exceeds 3 mass%. When a phosphorus supply source is contained, the mass molarity of proton is in the range of 0.0001 to 0.2 mol/kg, and the molar amount of water is at least 4 times the total molar amount of silicon atoms contained in the silicon alkoxide. According to this sol gel process, there can be obtained a coating excelling in mechanical strength without the need to heat the base material to temperature higher than 400°C and even when the coating thickness is as large as over 250 nm.

Inventors:

INOGUCHI KAZUYUKI (JP)
SASAKI TERUYUKI (JP)
KAMITANI KAZUTAKA (JP)

Application Number:

PCT/JP2005/006337

Publication Date:

October 13, 2005

Filing Date:

March 31, 2005

Export Citation:

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Assignee:

NIPPON SHEET GLASS CO LTD (JP)
INOGUCHI KAZUYUKI (JP)
SASAKI TERUYUKI (JP)
KAMITANI KAZUTAKA (JP)

International Classes:

B32B9/00; C08J7/046; C09D1/00; C09D4/00; (IPC1-7): B32B9/00

Domestic Patent References:

WO2002053345A1

2002-07-11

Foreign References:

JP2002348542A	2002-12-04
JPS50127930A	1975-10-08
JP2003277537A	2003-10-02
JPH08295844A	1996-11-12
JPH04338137A	1992-11-25
JP2001079980A	2001-03-27
JP2002166488A	2002-06-11
EP0358011A2	1990-03-14

Other References: