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US 6,475,300 B2Granted
Non-chromate metallic surface-treating agent, method for surface treatment, and treated steel material
AssigneeNippon Paint Co., Ltd.
InventorsToshiaki Shimakura, Motohiro Sasaki, Katsuyoshi Yamasoe, Hiromasa Nomura, Hiroshi Kanai, Kouhei Ueda
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Abstract
A non-chromate metallic surface treating agent comprising (a) a silane coupling agent and/or a hydrolytic condensation product thereof, (b) water-dispersible silica, and (c) a zirconium compound and/or a titanium compound, and further comprising (d) a thiocarbonyl-containing compound and/or (e) a water-soluble acrylic resin is disclosed.
Claims8
A non-chromate metallic surface-treating agent which comprises, in each liter thereof,
- (a) 0.01 to 100 g/l of a silane coupling agent and/or a hydrolytic condensation product thereof,
- (b) 0.05 to 100 g/l of water-dispersible silica (as solids), and
- (c) 0.01 to 50 g/l, in terms of Zr ion, of a zirconium compound and/or 0.01 to 50 g/l, in terms of Ti ion, of a titanium compound, said surface-treating agent further comprising
- (d) 0.01 to 100 g/l of a thiocarbonyl-containing compound, and/or
- (e) 0.1 to 100 g/l of a water-soluble acrylic resin.
2 more elements
Dependencies are inferred from the claim text.