Multilayered hydrophobic coating and method of manufacturing the same
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United States of America Patent
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May 18, 2004
Grant Date -
Feb 6, 2003
app pub date -
Jul 27, 2001
filing date -
Jul 27, 2001
priority date (Note) -
Expired
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Abstract
A multi-layer coating for a transparent substrate, such as glass, plastic, or other transparent material, which increases the durability and weatherability of the substrate. The coating includes a surface-hardening layer of organo-siloxane formed over the substrate. An abrasion-resistant coating comprising a multi-layer stack of alternating layers of silicon dioxide and zirconium dioxide is formed over the surface-hardening layer. The multi-layer coating further includes a hydrophobic outer layer of perfluoroalkylsilane formed over the abrasion-resistant coating to form an outer moisture-resistant surface. This multi-layer coating configuration increases the abrasion resistance and mechanical strength of the transparent substrate on which it is formed without imparting color to the transparent substrate.
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