Tri-cation zinc phosphate conversion coating and process of making the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Apr 22, 2003
Grant Date -
N/A
app pub date -
Sep 20, 2000
filing date -
Sep 20, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Tri-cation zinc phosphate conversion coating compositions are disclosed. The compositions include a phosphate component, ions of nickel, manganese, and zinc, and a glycerophosphate component, such as disodium glycerophosphate. Coatings formed from these compositions provide improved corrosion resistance to metal substrates and provide a uniform layer for the application of paint finishes. Processes of making and using these compositions are also disclosed.
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