Rust-preventive pigment composition and rust-preventive paints containing the same
AssigneesNippon Chemical Industrial Co., Ltd., Toho Ganryo Kogyo Co., Ltd.
InventorsTakahiro Nagayama, Minoru Yokoyama
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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).
Claims4
An anti-corrosive pigment composition comprising, as main components, white anti-corrosive pigment and a rust-preventing effective amount of 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.nH.sub.2 O(1)
- wherein, M.sub.1 and M.sub.2 are at least one selected from the group consisting of Ca.sup.2+ and Zn.sup.2+, X represents at least one anion selected from the group consisting of NO.sub.2.sup.-, NO.sub.3.sup.-, and MoO.sub.4.sup.2-, m represents a valency of the anion, and n is 20 or less.
Dependencies are inferred from the claim text.