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Powder coating composition, process for producing the same and coating film made from the same

A technology of powder coatings and manufacturing methods, applied in the direction of powder coatings, devices for coating liquid on surfaces, coatings, etc., can solve such problems that have not been developed

Inactive Publication Date: 2008-08-13
TOYO ALUMINIUM KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Based on the above viewpoints, although it is urgent to develop a powder coating composition containing flake pigments, it has good recyclability, can be manufactured through a low-risk process, and can be painted by safe techniques. The metallic feeling, bright feeling, and brightness of the coating film have been improved, but such a powder coating composition has not been developed yet

Method used

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  • Powder coating composition, process for producing the same and coating film made from the same
  • Powder coating composition, process for producing the same and coating film made from the same
  • Powder coating composition, process for producing the same and coating film made from the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] Add aluminum powder for powder coating manufactured by Toyo Aluminum Co., Ltd. 665g (PCF 7640, D50=19μm: D50 is the average particle diameter, about 0.1g of the sample is dispersed in 5g of an aqueous solution of 0.5% Triton X (manufactured by UNION CARBIDE, surfactant), and water is used as the solvent. Dropped in Microtrac 9320X-200 manufactured by Honeywell, the value measured after ultrasonic dispersion (40W 10 seconds).), also added polyester resin powder 7000g (Teodur PE 785-900D50 manufactured by Kubo Kao Paint Co., Ltd. = about 49 μm), stirred and mixed for 10 minutes.

[0082] Then, as an adhesive adhesive, 105 g of terpane hydrogenated resin (Clearon P-105 manufactured by Yasuhara Chemical Co., Ltd., number average molecular weight 650, softening point 105° C.) was dissolved in 350 g of heptane (boiling point 98.4° C. ) to form a binder solution, then add it to the above-mentioned mixture of aluminum powder and resin powder, and stir for 20 minutes to become ...

Embodiment 2

[0084] 8.6 g of aluminum powder for powder coating (PCF1401, D50 = 60 μm) manufactured by Toyo Aluminum Co., Ltd. and 108.3 g of polyester resin powder (Teodur PE 785-900 D50 = about 49 μm manufactured by Kubo Paint Co., Ltd.) were mixed in 1 Mix well in a PP cup.

[0085] Adhesive adhesives were formed by dissolving 3.1 g of terpane hydrogenated resin (Clearon P-105 manufactured by Yasuhara Chemical Co., Ltd., number average molecular weight 650, softening point 105°C) in 31.3 g of heptane agent solution, and then added to the above-mentioned mixture of aluminum powder and resin powder, while fully mixing and stirring, while heating with a 40°C water bath from time to time, to evaporate the heptane. When the wet powder was almost dry, it was transferred to an eggplant-shaped flask and dried in a rotary evaporator at 40°C for 20 minutes under vacuum to completely evaporate the heptane. The obtained resin powder was passed through a 100 μm sieve to obtain 113.6 g of bonded alu...

Embodiment 3

[0087] Bonded aluminum was obtained in the same manner as in Example 2 using an aluminum powder for powder coating (PCF1440A, D50=34 μm) manufactured by Toyo Aluminum Co., Ltd.

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Abstract

An object is to provide a powder coating composition having excellent recyclability, offering superior safety, and containing a flake pigment providing metallic feel, brilliance and brightness to a coating film, as well as a coating film obtained from the former. A powder coating composition containing thermosetting resin powder having a surface adhered to a flake pigment composed of aluminum flake having an average particle size of 1 to 100 mum using an adhesive binder composed of a resin dissolved in a solvent which does not dissolve a thermosetting resin, as well as a coating obtained from the former are provided.

Description

technical field [0001] The present invention relates to a pigment-containing powder coating composition, a method for producing the same, and a coating film using the same. More specifically, it relates to a novel metal powder coating in which flake pigments are attached to the surface of thermosetting resin powder Composition and its coating film. Background technique [0002] As a low-pollution coating that does not use organic solvents, powder coatings are increasingly in demand in automotive parts, electrical appliances, furniture, production machinery, office equipment, toys, etc. Painting with powder paint is low-pollution type, and at the same time, since a thick paint film can be formed after one painting, it does not need to be repeatedly painted like conventional solvent-based paints, so the painting time can be shortened . In addition, since the paint does not contain a solvent, it also has the advantage of not generating pores in the paint film. [0003] The p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/03B05D7/24C09D7/80
CPCC09D5/032Y10T428/12736Y10T428/256C09D5/03
Inventor 高野靖新居崎徹
Owner TOYO ALUMINIUM KK
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