Glass ceramic and metal substrates with a self-cleaning surface, method for the production and use thereof
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United States of America Patent
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Mar 29, 2005
Grant Date -
Aug 14, 2003
app pub date -
Jan 16, 2003
filing date -
Apr 1, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to glass, ceramic and metal substrates with at least one self-cleaning surface, comprising a layer with a micro-rough surface structure which is arranged on the substrate and made at least partly hydrophobic. The layer contains a glass flux and structure-forming particles with a mean particle diameter within the 0.1 to 50 .mu.m range; the glass flux and structure-forming particles are present in a volume ratio within the 0.1 to 5 range, and the micro-rough surface structure has a ratio of mean profile height to mean distance between adjacent profile tips within the 0.3 to 10 range. To produce the subject of the invention the substrate is coated with a composition containing a glass flux and structure-forming particles, and the layer is burnt in and made hydrophobic.
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