Water-repellent coating and coating film
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United States of America Patent
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Jun 17, 2003
Issued Date -
N/A
app pub date -
Nov 14, 2001
filing date -
Jul 31, 1998
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Abstract
A water-repellent coating has tetrafluoroethylene resin powder, silicone resin binder, and organic solvent. The tetrafluoroethylene resin powder has a ratio of the peak absorbance at 1,800 cm.sup.-1 to the peak absorbance at 500 cm.sup.-1 of 0.0001 to 0.05 exclusive. A coating film is formed by applying such a coating on a substrate. The coating has the properties of high water repellency, excellent anti-ice-coating, excellent anti-snow-coating, and so on, in spite of not having a large amount of fluororesin powder. In addition, the coating of film keeps the water repellency regardless of whether the coating film is immersed into water for a long time.
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