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Chromate-free precoated metal sheet with metallic appearance and water-based coating composition for use in manufacturing same

一种无铬酸盐、水系涂料的技术，应用在多色效果涂料、防腐涂料、聚酯涂料等方向，能够解决低成本、原材料高价等问题，达到耐化学药品性优良的效果

Active Publication Date: 2014-07-02
NIPPON STEEL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a strong demand for cost reduction due to the high price of these raw materials

Method used

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  • Chromate-free precoated metal sheet with metallic appearance and water-based coating composition for use in manufacturing same
  • Chromate-free precoated metal sheet with metallic appearance and water-based coating composition for use in manufacturing same
  • Chromate-free precoated metal sheet with metallic appearance and water-based coating composition for use in manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0132] Hereinafter, examples of the present invention will be described. However, the present invention is not limited to these Examples.

[0133] (1) metal plate

[0134] Table 1 shows the types of metal plates used. As a base material of the plated metal plate, a mild steel plate with a plate thickness of 0.5 mm was used. Regarding the SUS plate, a ferritic stainless steel plate (steel components are C: 0.008 mass%, Si: 0.07 mass%, Mn: 0.15 mass%, P: 0.011 mass%, S: 0.009 mass%, Al: 0.067 mass%, Cr: 17.3% by mass, Mo: 1.51% by mass, N: 0.0051% by mass, Ti: 0.22% by mass, the remainder being Fe and unavoidable impurities). The surface of the metal plate is subjected to alkali degreasing treatment, washed and dried with water, and then used.

[0135] Table 1

[0136] No.

Metal plate (thickness 0.5mm, plated on both sides)

M1

Electro-galvanized steel sheet (coating weight 20g / m 2 )

M2

Hot-dip galvanized steel sheet (coating weight 60g / m...

manufacture example

[0158]

[0159]In a reaction vessel equipped with a mixer, a condenser, and a thermometer, put 199 parts of terephthalic acid, 232 parts of isophthalic acid, 199 parts of adipic acid, 33 parts of 5-sodiosulfoisophthalic acid, 312 parts of alcohol, 125 parts of 2,2-dimethyl-1,3-propanediol, 187 parts of 1,5-pentanediol, 0.41 part of tetrabutyl titanate, carry out esterification reaction from 160°C to 230°C for 4 hours . Then, the pressure in the system was gradually reduced to 5 mmHg over 20 minutes, and polycondensation reaction was carried out at 260° C. for 40 minutes under a vacuum of 0.3 mmHg or less. After adding 20 parts of butyl cellosolve and 42 parts of methyl ethyl ketone to 100 parts of the obtained copolymerized polyester resin, stirring and dissolving was performed at 80°C for 2 hours, and then 213 g of ion-exchanged water was added to perform water dispersion. Thereafter, the solvent was distilled off while heating, and it was filtered through a 200-mesh nylon...

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PUM

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Abstract

A chromate-free coated metal sheet according to the present invention includes: a metal sheet; and a coating film α which contains an organic resin A as a film formation component and a flaky aluminum pigment C having a deactivation-treated surface on at least one surface of the metal sheet; wherein the thickness of the coating film α is in a range of 2 to 10 μm.

Description

technical field [0001] The present invention does not contain hexavalent chromium with high environmental load, forms a coating film with a metallic tone appearance on at least one surface of a metal plate, and relates to design properties (brightness, concealment), corrosion resistance, and coating film adhesion An inexpensive chromate-free precoated metal sheet excellent in (processing adhesion, water-resistant adhesion), scratch resistance, chemical resistance, etc., and a water-based coating composition used in its production. [0002] This application claims priority based on Japanese Patent Application No. 2011-239362 for which it applied in Japan on October 31, 2011, and uses the content here. Background technique [0003] Recently, the demand for a high-end metal design has been increasing in various fields including home appliances. [0004] Sheet metal with a metallic design is often used as the outer panel of a wide variety of products. In the application as an ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D5/06C09C1/64C09C3/00C09D5/02C09D5/29C09D7/12C09D167/00C09D175/04C09D201/00C09D7/61C09D7/62
CPCC08G18/0823C09D181/08C09D5/08C08G18/6659C09D175/04C09D5/36C08K2003/0812C09D167/02C09C1/62C09D7/1216B05D5/067B05D7/14C08G18/4238Y10T428/256Y10T428/12083C09D7/61C09D7/69C09D7/62C08G18/12C08G18/3228C08L75/04C08K9/10C08K2201/003C09D133/00C25D3/565
Inventor 森下敦司林公隆布田雅裕木全芳夫植田浩平东新邦彦和田裕介奥村豪治
Owner NIPPON STEEL CORP
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