Cationically electrodepositable coating material
AssigneeKansai Paint Co., Ltd.
InventorsFumiaki Nakao, Katsuhisa Sugisaki, Akira Tominaga
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Abstract
According to the present invention, provided is a cationically electrodepositable coating material comprising a resin for a cationically electrodepositable coating material, a hydrotalcite-like solid solution having a specific composition and, if necessary, a basic bismuth compound and/or an organic acid salt thereof. Such cationically electrodepositable coating material forms a coating film which is excellent in performances such as an edge corrosion-preventive property, a throwing power, a chemical resistance and a smoothness without adding harmful substances such as lead compounds and chromium compound.
Claims15
A cationically electrodepositable coating material comprising:
- (A) a resin for a cationically electrodepositable coating material and
- (B) a hydrotalcite-like solid solution represented by the following Formula (1):
- [(Mg2+)y(M22+)(1−y)](1−x)(M13+)x(OH)2An−(x/n).mH2O (1)
- wherein M22+ represents at least one divalent metal selected from the group consisting of Zn and Ca;
- M13+ represents at least one trivalent metal selected from the group consisting of Al and Fe;
- An− represents a n-valent anion;
- and x, y and m each are integers satisfying the following condition:
- 0<x≦0.5, 0<y<1,0≦m<2
Dependencies are inferred from the claim text.