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Multi-layer coating film formation method

A multi-layer coating film and coating film technology, which is applied to the device, coating, and special surface of the surface coating liquid, can solve the problems such as the water resistance and adhesion of the coating film, and achieve excellent appearance and excellent water resistance. sexual effect

Active Publication Date: 2018-02-16
KANSAI PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PTL9 does not mention the water resistance adhesion of the coating film

Method used

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  • Multi-layer coating film formation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0192] With 92 parts of distilled water, 1 part of surface conditioner (A-2), 5 parts (solid content is 0.5 part) Hydroshine WS-3004 (aqueous vapor deposition aluminum flake pigment, produced by Eckart, solid content: 10%; internal solvent : Isopropanol, average particle size D50: 13 μm, thickness: 0.05 μm; the surface has been treated with silica), 1.7 parts (0.48 parts of solid content) AcrysolASE-60 (polyacrylic viscosity modifier, produced by The Dow Chemical Company, solid content: 28%) and 0.17 parts of dimethylethanolamine were blended, stirred and mixed, whereby an effect pigment dispersion (Y-1) was prepared.

preparation example 2 to preparation example 15

[0194] Effect pigment dispersion (Y-2) to effect pigment dispersion (Y-16) were obtained in the same manner as Preparation Example 1, but using the formulations shown in Table 2.

[0195] The values ​​in brackets in Table 2 are the solid content.

[0196]

[0197] The values ​​in brackets in Table 2 (continued) are the solid contents.

[0198]

[0199] 4. Preparation of the object to be coated

[0200] Production of coated object 1

[0201] A cationic electrodeposition coating composition "Erekuron (エレクロン) 9400HB" (trade name, manufactured by Kansai Paint Co., Ltd., a cationic resin based on an amine-modified epoxy resin containing a blocked polyisocyanate compound) was applied by electrodeposition. as a curing agent) onto a degreased and zinc-phosphate-treated steel plate (JISG3141, size: 400×300×0.8 mm) to a film thickness of 20 μm when cured. The obtained film was heated at 170° C. for 20 minutes to be cured by crosslinking, whereby a coated object 1 was obtained...

Embodiment 1

[0206] The colored paint composition (X-1) "WP-522HN-2.0" (trade name, manufactured by Kansai Paint Co., Ltd., water-based polyester resin The intermediate coating composition, the L* value of the coating film to be obtained: 20) is applied to the object to be coated 1 until the thickness of the cured film is 20 μm. After allowing the resulting film to stand for 3 minutes, preheating was performed at 80° C. for 3 minutes. In addition, the effect pigment dispersion (Y-1) prepared as above was adjusted to have the viscosity of the coating composition shown in Table 2, and under the condition that the temperature of the booth (booth) was 23° C. and the humidity was 68%. , which was coated with a robot bell (manufactured by ABB) to a dry coating film thickness of 0.1 μm. The resultant was then allowed to stand at 80° C. for 3 minutes. Subsequently, the clear coating composition (Z-1) "KINO6500" ( Trade name, produced by Kansai Paint Co., Ltd., two-component organic solvent-base...

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Abstract

A multi-layer coating film formation method comprises heating an uncured color coating film, an uncured glittering coating film and an uncured clear coating film which are respectively formed by coating a color coating material (X), a glittering pigment dispersion (Y) and a clear coating material (Z) in this order on a material of interest and then curing the three coating films simultaneously, wherein the glittering pigment dispersion (Y) comprises water, a surface modifier (A), a scale-like glittering pigment (B) and a viscosity modifier (C) and has such a property that a film produced by coating the glittering pigment dispersion (Y) in such a manner that a dried form of the film can have a thickness of 0.2 [mu]m has a transmittance of light having a wavelength of 550 nm of 10 to 50%.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Japanese Patent Application No. 2015-151682 filed on July 31, 2015 and Japanese Patent Application No. 2016-048602 filed on March 11, 2016, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to a method of forming a multilayer coating film. Background technique [0004] The purpose of applying the coating composition is mainly to protect the material and impart an excellent appearance. For industrial products, excellent appearance, especially "texture" is important in improving product strength. Although consumers expect industrial products to have various textures, metallic or pearl-like luster (hereinafter referred to as "metallic luster") is desired in the fields of automobile exterior panels, automobile parts, home electronics and the like recently. [0005] Metallic luster is a texture characterized by th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/36B05D5/06B05D7/24C09D5/36C09D201/00
CPCC09D5/36B05D5/067B05D7/14B05D2201/00B05D2202/10B05D7/572C09D7/62C09D7/70C08K9/02C08K3/013C09D201/00B05D7/574B05D7/57B05D1/36B05D3/007B05D5/061C09D133/02
Inventor 伊藤政之松永贤一郎豊田洋辅仓持竜生成田信彦
Owner KANSAI PAINT CO LTD
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