Water repellent coating
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United States of America Patent
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-
Apr 1, 1997
Grant Date -
N/A
app pub date -
May 12, 1995
filing date -
Mar 11, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for formation of a water repellent coating which comprises applying a topcoat coating composition of a fluorine containing thermosetting resin and granular compound of 5 microns or less in mean particle size to a substrate bearing a thermosetting undercoat coating film which is semi crosslinked, and then co-curing both films by heating. The resulting cured coating has a water repellent surface, excellent adhesion to a substrate, excellent corrosion resistance, no staying of water as droplets on the surface and no foul odor. The coating is especially suitable for applying to aluminum fins of a heat exchanger.
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