Durability improved colloidal silica coating
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United States of America Patent
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Oct 13, 1998
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N/A
app pub date -
Nov 9, 1995
filing date -
Nov 9, 1995
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Abstract
A silica-based water-spreading coating having surfaces of silica particles coated with a metal oxide. The metal comprises aluminum, gallium, germanium, tin, indium, arsenic, antimony or vanadium. The water-spreading coating may be applied to a retroreflective sheeting on a traffic sign.
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