Surface coating film and process for forming the same
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United States of America Patent
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Issued Date -
Feb 20, 2003
app pub date -
Jun 24, 2002
filing date -
Jun 25, 2001
priority date (Note) -
Abandoned
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Abstract
A surface coating film coated on a substrate includes at least one member being selected from the group consisting of silicon dioxide and silicon dioxide derivatives, and an additive including polyvinyl pyrrolidone (PVP) being dispersed or solved therein. A forming process therefor includes the steps of applying a coating solution on a surface of a substrate, the coating solution including at least one silicon containing compound, being selected from the group consisting of alkoxy silane, siloxane and organosiloxane, and an additive including PVP, and heating the substrate. Since PVP is dispersed or solved in the surface coating film, it is possible to improve the wear resistance and superficial hardness. Moreover, since the surface coating film is enhanced in terms of the toughness, no crack occurs even when it is formed by polymerization reactions.
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