Rust-preventive pigment composition and rust-preventive paints containing the same
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United States of America Patent
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Oct 31, 2000
Grant Date -
N/A
app pub date -
Mar 30, 1999
filing date -
Jul 31, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to an anti-corrosive pigment composition, characterized by comprising, as main components, white anti-corrosive pigment and an inorganic anion exchanger represented by the following formula (1): (3-4)[M.sub.1 ]O.Al.sub.2 O.sub.3.[M.sub.2 ]X.sub.2/m .multidot.nH.sub.2 O(1) (wherein, M.sub.1 and M.sub.2 are at least one selected from Ca.sup.2+ or Zn.sup.2+, X represents at least one anion selected from NO.sub.2.sup.-, NO.sub.3.sup.- or MoO.sub.4.sup.2-, m represents a valency of the anion, and n is 20 or less).
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