Surface treatment agent for metal, process for surface treatment of metallic substances and surface-treated metallic substances

Abstract

A metal surface treatment agent, characterized in that cationic or nonionic polyurethane resin, acrylic resin, epoxy resin, polyester resin and polyamide resin and, with the resin compound represented by the following formula and, Zr, Ti, Compounds of V, Mo, W, Mn and Ce are combined with water to form, ∴ [wherein, each R 1 independently of each other expresses -CH 2 -, -CH 2 -NH-CH 2 -or-CH=N-CH 2 -, Y represents a hydrogen atom or the general formula (II) ∴ Z represents an aromatic compound residue, etc., W is hydrogen or P, and the P represents -CH 2 X-, -CH 2 NHCH 2 X or -CH'=NCH 2 X, (in the formula, X represents the use of OH, OR 4 , Halogen atom, -N(R 5 )(R 6 ) or -N + (R 7 )(R 8 )(R 9 )A - ] The substitution ratio of the group P is the number of the group P / (the sum of the number of the benzene ring and the number of the group Z)=0.2~4.0, n=0~29, m=0~10, and the surface treatment method of the metal material and Surface treated metal material. The metal surface treatment agent of the present invention does not contain chromium and can impart excellent corrosion resistance, alkali resistance and fingerprint resistance to metal materials.

Description

technical field [0001] The present invention relates to a metal surface treatment agent and a metal surface treatment agent which can impart excellent corrosion resistance, alkali resistance, and fingerprint resistance to the surface of a sheet, coil, and molded product using metal as a material, and which can be used to form a chromium-free film Methods, surface treated metal materials. [0002] Furthermore, the present invention relates to imparting excellent corrosion resistance to molded products, cast products, sheet coils, and the like of automobile bodies, automobile parts, building materials, home appliance parts, and the like made of galvanized steel sheets, steel sheets, and aluminum-based metal materials. properties, alkali resistance, solvent resistance, and fingerprint resistance, surface treatment agents, surface treatment methods, and surface-treated metal materials that can be used to form chromium-free coatings. Background technique [0003] Metal materials...

AI Technical Summary

Problems solved by technology

[0006] However, in the metal surface treatment that does not use chromium, it is advantageous that the treatment liquid does not contain hexavalent chromium, but on the other hand, it has insufficient corrosion resistance, and the corrosion resistance of the damaged part and the processed part in particular is lower than that of chromate. The film is remarkably poor, and the fingerprint resistance, scratch resistance and lubricity are not sufficient

[0007] Therefore, currently, there is no non-chromate-based metal surface treatment agent that can form a film on the surface of a metal material that can simultaneously impart excellent corrosion resistance, alkali resistance, and fingerprint resistance.

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