Coating Formation Method

A technology of coating film and transparent coating film, applied in the direction of coating, device for coating liquid on the surface, special surface, etc., can solve the problem of insufficient chroma, and achieve the effect of high chroma

Inactive Publication Date: 2016-08-24
KANSAI PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can form a matte coating film with a metallic texture, the film has the disadvantage of insufficient chroma

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0069] Preparation of acrylic resins containing hydroxyl groups

[0070] 50 parts of ethylene glycol monoethyl ether acetate were placed in a reaction vessel equipped with a thermometer, a thermostat, a stirrer, a reflux condenser and a dropping funnel, stirred and mixed. The mixture was heated to 135°C. Subsequently, the monomer / polymerization initiator mixture described below was added dropwise to the reaction vessel kept at the same temperature over 3 hours. After the dropwise addition was complete, the mixture was aged for 1 hour. Thereafter, a mixture comprising 10 parts of ethylene glycol monoethyl ether acetate and 0.6 parts of 2,2'-azobis(2-methylpropionitrile) was added dropwise to the reaction product within 1 hour and 30 minutes and While maintaining the same temperature, the resulting product was aged for another 2 hours. Then, ethylene glycol monoethyl ether acetate was distilled off under reduced pressure, thereby obtaining a hydroxyl group-containing acrylic ...

Embodiment 1 to 3 and comparative example 1 and 2

[0078] With respect to the resin component of 100 parts (solid content), this resin component comprises the acrylic resin containing the hydroxyl group that obtains in the preparation example 1 of 75 parts and the U-Van 28-60 of 25 parts (trade name, butyl ether melamine resin; produced by Mitsui Chemicals, Inc.), a coloring material was added in the ratio shown in Table 1, and the mixture was stirred and mixed to prepare a primer composition containing the coloring material. The primer composition was diluted to a viscosity suitable for painting to form an organosolvent coating composition having a solids content of about 25%. The coating composition was applied to the substrate to be coated by air spraying to a film thickness of 15 μm when cured. After painting, the resulting product was allowed to stand in the laboratory for about 15 minutes at a room temperature of about 20°C. Thereafter, by air spraying, with respect to 100 parts by mass of the resin component (LUGABAKE ...

Embodiment 4-11 and comparative example 3 and 4

[0080] With respect to the resin component of 100 parts (solid content), this resin component comprises the acrylic resin containing the hydroxyl group that obtains in the preparation example 1 of 75 parts and the U-Van 28-60 of 25 parts (trade name, butyl ether melamine resin; manufactured by Mitsui Chemicals, Inc.), a coloring material was added in the ratio shown in Table 2, and the mixture was stirred and mixed to prepare a primer composition containing the coloring material. The primer composition was diluted to a viscosity suitable for painting to form an organosolvent coating composition having a solids content of about 25%. The coating composition was applied to the substrate to be coated by air spraying to a film thickness of 15 μm when cured. After painting, the resulting product was allowed to stand in the laboratory for about 15 minutes at a room temperature of about 20°C. Thereafter, by air spraying, with respect to 100 parts by mass of the resin component (LUGAB...

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Abstract

An object of the present invention is to provide a method of forming a paint film capable of producing a paint color with a soft texture showing a wide range from strong light (adjacent to specular light) to shade (in an oblique direction). The lightness changes, and has high chroma from strong light to dark, and the method is suitable for industrial products such as two-wheeled automobile exteriors and automobile interior parts. The present invention relates to a method for forming a coating film, the method comprising forming a metallic undercoat film comprising a scaly aluminum pigment on a substrate, and forming a colored transparent coating film comprising a colored pigment and a matting agent on the metallic undercoat film, Wherein the coloring pigment in the colored transparent coating film is a transparency pigment, and wherein the coating composition contains the transparency in an amount of 1 part by mass with respect to 100 parts by mass of resin solid content which is a vehicle forming component When the pigment is used as the only coloring material, and when the coating composition is used to form a coating film having a thickness of 100 μm, the coating film obtains a haze value of 0.1 to 10.0.

Description

technical field [0001] Cross References to Related Applications [0002] This application claims priority from JP2012-092156A filed Apr. 13, 2012, the disclosure of which is incorporated herein by reference in its entirety. The present invention relates to a method of forming a paint film capable of producing paint with a soft texture showing a large change in lightness from strong light (adjacent to specular light) to dark (in an oblique direction) And has high chroma from strong light to shade. Background technique [0003] Matte designs that are visually soft and have an earthy quality are gaining popularity in industrial products such as two-wheeled vehicle exterior materials and automotive interior components. In particular, matte metallic paint that shows changes in lightness depending on the viewing angle provides a luxurious look and is therefore one of the most talked about paints in matte design. [0004] With regard to painting that exhibits changes in lightnes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D1/36B05D5/06
CPCB05D5/068B05D2601/08B05D7/53B05D7/57B05D2425/01B05D2451/00B05D2601/22B05D2401/10
Inventor 清水博神守功福岛菜摘子
Owner KANSAI PAINT CO LTD
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