Surface treatment agent for metal, surface treatment method for metallic material, and surface-treated metallic material

A metal surface treatment and metal compound technology, applied in the direction of metal material coating process, metal layered products, chemical instruments and methods, etc., can solve the problems of browning, discoloration, and insufficient corrosion resistance.

Inactive Publication Date: 2007-10-03
NIHON PARKERIZING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, these metal surface treatment methods that do not use chromium, in contrast to the advantage that the treatment solution does not contain hexavalent chromium, its corrosion resistance is not good enough, especially the corrosion resistance of scars and processed parts is obviously lower than that of Poor chromate coating
Furthermore, there is a disadvantage that the anti-blackening property is insufficient in a high-temperature and high-humidity environment.
What's more, generally speaking, the resi...

Method used

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  • Surface treatment agent for metal, surface treatment method for metallic material, and surface-treated metallic material
  • Surface treatment agent for metal, surface treatment method for metallic material, and surface-treated metallic material
  • Surface treatment agent for metal, surface treatment method for metallic material, and surface-treated metallic material

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Embodiment

[0074] Hereinafter, the present invention will be described by way of examples and comparative examples, but the examples are only examples and do not limit the present invention. Metal materials to be treated, components (A) to (F), treatment methods (pretreatment and treatment of the present invention), evaluation methods, description of evaluation results, and composition of treatment agents used in Examples and Comparative Examples And processing methods (Tables 1-4, 8-10, 13-15) and evaluation results (Tables 5-7, 11-12, 16-17) will be described in the following order.

[0075] (1) Metal material to be processed

[0076] I electro-galvanized steel sheet (thickness: 0.8mm)

[0077] II hot-dip galvanized steel sheet (thickness: 0.8mm)

[0078] III5% galvanized steel plate (thickness: 0.6mm)

[0079] IV55% galvanized steel plate (thickness: 0.4mm)

[0080] (2) Components of metal surface treatment agent

[0081] (2-1) Cationic polyurethane resin (A)

[0082] Cationic P...

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Abstract

An agent for treating metal surfaces which comprises an aqueous medium and, incorporated therein, (A) a cationic urethane resin which is water-soluble or in an aqueous emulsion form, (B) a cationic polycondensation product obtained from a phenol compound and an aldehyde, and (C) a zirconium compound and/or titanium compound. A coating film formed from the treating agent imparts excellent corrosion resistance and alkali resistance to a metallic material. When the proportion of the urethane resin (A) is equal to or higher than that of the polycondensation product (B), yellowing resistance can be also imparted. By incorporating a metal compound (D) containing a specific metal, excellent blacking resistance also can be imparted. Furthermore, by incorporating an acid ingredient (E) and a vanadium compound (F), a further improvement in performances can be attained.

Description

technical field [0001] The present invention relates to a metal surface treatment agent, a metal surface treatment method and a surface treatment metal material, which are used to form a metal coil and a formed product surface with excellent corrosion resistance and alkali resistance, and In some cases, excellent blackening resistance and excellent yellowing resistance can also be provided, and a coating film not containing chromium can be provided. More specifically, the present invention relates to a surface treatment agent, a surface treatment method, and a surface-treated metal material, which are used in automobile bodies, automobiles, etc. Formed products such as parts, building materials, and home appliance parts, castings, coils, etc., can be given excellent corrosion resistance, alkali resistance, and depending on the situation, excellent blackening resistance and yellowing resistance, and form The most important is the chromium-free coating. Background technique ...

Claims

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Application Information

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IPC IPC(8): C09D175/04B32B15/08C09D161/08C23C22/40C23C22/48
CPCC23C22/40C23C22/48C23C22/53C23C22/56
Inventor 大下贤一郎田中宗德
Owner NIHON PARKERIZING
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