Aqueous metal surface treating agent
AssigneeNippon Dacro Shamrock Co., Ltd.
InventorsMasaki Oyama, Hirokuni Okada
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Abstract
The present invention is to provide an aqueous agent for treating metal surfaces that can carry out degreasing and forming a zinc phosphate coat simultaneously. This agent is characterized by including an aqueous solution that comprises water and a water-soluble organic solvent wherein the amount of the water is larger than that of the water-soluble organic solvent, and specific amounts of phosphate ions, nitrate ions and zinc ions based on 100 parts by weight of the aqueous solution.
Claims4
An aqueous agent for treating metal surfaces including 100 parts by weight of an aqueous solution that comprises from more than 12 weight % to less than 50 weight % of a water-soluble organic solvent and from more than 50 weight % to less than 88 weight % of water, 0.01-4.25 parts by weight of phosphate ions, 0.02-45 parts by weight of nitrate ions, and 0.01-6.5 parts by weight of zinc ions.
Dependencies are inferred from the claim text.