Anti-corrosive pigment and compositions formulated with such pigments
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United States of America Patent
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Jul 4, 2000
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N/A
app pub date -
Feb 24, 1998
filing date -
Aug 25, 1995
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Abstract
Effective anti-corrosive pigments are obtained using basic or neutral to basic polyvalent metal organophosphonates. The anti-corrosive organophosphonate pigments may optionally contain a co-acidic substance such as silica. The organophosphonate pigments provide ant-corrosive protection comparable to traditional pigments while enabling the avoidance of heavy metals.
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