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Powder coating, method for production thereof, method for using said powder coating and coated article

A powder coating and powder technology, applied in the field of powder coating, its preparation, the use of the coating and the coated products using the coating, can solve the problems of broken, poor bonding, impossible to provide a coating film, etc., and achieve excellent attractive performance , excellent water resistance, remarkable attractive effect

Inactive Publication Date: 2005-12-21
KANSAI PAINT CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, this melt-kneading / pulverizing method has a problem that since the components are uniformly dispersed by kneading the composition under the shear force at the melting temperature of the resin, pigments, especially bright pigments, will Crushed in the middle, resulting in poor appearance attractiveness of the coated film
However, because the solid resin particles of powder coatings are simply mixed with the bright pigments, the bonding between them is poor; Pigment levels may not always be constant and such recycled coatings may not provide a coated film with the same degree of visual appeal as the original film

Method used

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  • Powder coating, method for production thereof, method for using said powder coating and coated article
  • Powder coating, method for production thereof, method for using said powder coating and coated article
  • Powder coating, method for production thereof, method for using said powder coating and coated article

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0123] Preparation of base paint powder

[0124] The compounds shown in Table 1 were mixed into the compositions shown in Table 1 (respectively expressed in relative amounts), and melt-kneaded at the melt-kneading temperature shown in Table 1 to form granular compositions A, B, C, D and E.

[0125] powder coating composition

A B C D E

Thermosetting Polyester Resin 1

Thermosetting polyester resin 2

Thermosetting polyester resin 3

thermosetting acrylic resin

polyisocyanate compound

Hydroxyalkylamides

epoxy resin

Tetradecanoic acid

Titanium dioxide

80 - - - 80

- 95 - - -

- - 50 - -

- - - 80 -

16 - - - 16

- 5 - - -

- - 46 - -

- - - 18 -

- - - - 45

Melting-kneading temperature (°C)

130 130 110 90 130

[0126] In Table 1, the thermosetting polyester 1 used w...

preparation Embodiment 2

[0132] Preparation of Liquid Binding Aids

[0133] The compounds shown in Table 2 were mixed into the compositions shown in Table 2 (respectively expressed in relative amounts) and stirred in the dispersant to form liquid binding aids a, b, c, d, e and f.

[0134] liquid binding aid

[0135] In Table 2, the shellac used was "Bleached Dewaxed Shellac (trade name)" produced by Japan Shellac Industries, Ltd.

Embodiment 1

[0137] To each of the base paint powders A to E prepared in Preparation Example 1, the following was added as pigment particles: an aluminum pigment ("PCF-7670A" of Toyo Aluminum K.K. name)); a pearlescent pigment with an average particle diameter of about 60 μm ("Iriodin 103 WNT" (trade name) of Merck Ltd. of Japan); a stainless steel flake with an average particle diameter of about 60 μm ("Stainless Paste 01-1204" " (trade name)); a phosphorescent pigment with an average particle diameter of about 10 µm ("G-300F" (trade name) of Nemoto & Co., Ltd.); or carbon black with an average particle diameter of about 24 nm (Mitsubishi Chemical Corp. "carbon black MA-100" (trade name) of . The resulting mixture was stirred and mixed; the liquid binding aids a, b, c, d, e or f prepared in Preparation Example 2 were added by spraying, respectively; (trade name) was supplied with hot air at 80° C. and dried to obtain powder coating Nos. 1 to 14 shown in Table 3.

[0138]Powder coatings ...

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Abstract

A paint powder is characterized in that pigment particles are bound to the base paint powder by shellac. The powder coating exhibits strong and uniform binding of pigment particles to its base coating powder, and can also provide a coating film that exhibits excellent designability due to the action and effect of shellac. The powder coating does not separate the pigment particles from the base coating powder, which are components of the powder coating, shows good coating workability, and can provide a coating film with a smooth surface , has excellent designability and exhibits high water resistance, and has excellent productivity and economy because powder coatings that are not adhered to articles to be coated can be recycled and reused.

Description

technical field [0001] The present invention relates to an attractive powder paint having an excellent appearance (especially metallic and pearly appearance), a method for producing the same, a method for forming a coated film using the powder paint, a method for manufacturing a coated article, and a coated article. Specifically, the powder coating according to the present invention has excellent coating efficiency; provides a uniform coating film with excellent appearance attractiveness and water resistance; and also has excellent productivity and cost efficiency because the powder coating can be recycled and reused . Background technique [0002] Heretofore, a method generally used for painting is a method of applying a liquid paint in which paint components are dissolved in a solvent to a substrate and then evaporating the organic solvent. However, this method brings about the problem of evaporation of harmful organic solvents, thus having adverse effects on human beings...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/06C08L93/02C09D5/03C09D193/02
CPCB05D1/06C08L93/02C09D5/033C09D5/035C09D193/02Y02P20/582Y10T428/31678C09D5/03
Inventor 大越利雄川本酉元原田雅好妹背学
Owner KANSAI PAINT CO LTD
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