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Improved monochromatic white paint-appearance coating combination and coated product thereof

A composition and coating technology, used in polyester coatings, coatings, etc., can solve the problems of poor recoating adhesion, poor moisture resistance and weather resistance, and loss of gloss.

Active Publication Date: 2017-07-04
PPG COATINGS TIANJIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, white paints have poor leveling properties, poor visual appearance, loss of gloss, poor recoating adhesion, poor moisture resistance and weather resistance when the film thickness is high.

Method used

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  • Improved monochromatic white paint-appearance coating combination and coated product thereof
  • Improved monochromatic white paint-appearance coating combination and coated product thereof

Examples

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Embodiment

[0023] The following examples are provided to further illustrate the invention but should not be construed as limiting the invention to the details set forth in the examples. All parts and percentages in the following examples, as well as throughout the specification, are by weight unless otherwise indicated.

[0024] Preparation of coating composition of the present invention

[0025] The coating compositions of the present invention were prepared according to the procedure described above with the parts by weight shown in Table 1.

[0026] Table 1. Composition of the coating composition of the present invention

[0027] Example 1 Comparative Example 1 Comparative Example 2 Titanium dioxide 1

30.8 32.7 31.4 polyester resin 2

16.4 8.6 14.3 amino resin 3

5.6 6.8 0.0 Acrylic 4

5.8 8.5 5.1 solvent 5

40.0 42.3 46.9 leveling agent 6

0.03 0.03 0.02 UV absorber 7

0.2 0.2 0.3 CAB so...

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Abstract

The invention provides an improved monochromatic white paint orange peel-appearance coating combination. The combination comprises the following components based on gross weight of the paint, 10-20wt% of polyester resin, and 2-8 wt% of amino resin and 0-6% of acrylic resin. The invention also provides a coating combination-coated substrate.

Description

technical field [0001] The present invention relates to a coating composition capable of improving the appearance of a solid white paint on automotive parts such as bumpers, spoilers, door handles, and the like, and articles coated therewith. Background technique [0002] At present, there are many kinds of car body colors, among which white can account for half or more of all colors. The primer used for spraying bumpers is basically black. When covering a black primer with a monochromatic white paint, it is necessary to spray a 30-40 micron thick paint film to ensure a complete covering effect. However, white paints have poor leveling and poor visual appearance at high film thicknesses, as well as problems such as loss of gloss, poor recoat adhesion, poor moisture resistance and weather resistance. In order to improve the orange-peel appearance and overall performance of the monochrome white paint, the inventors conducted a large number of screenings on the resin system, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D161/20C09D133/00C09D5/28C09D7/12C09D7/00C08J7/04C08L23/12C08J7/043
CPCC09D7/61C09D7/20C09D5/28C09D167/00C08J2467/00C08J2323/12C08L2205/03C08J7/0427C08J7/043C08L61/20C08L33/00C08K2003/2241C09D7/47C08L33/04C08L61/28C09D7/40C09D133/00C09D167/02
Inventor 司卫杰吕楠王进强
Owner PPG COATINGS TIANJIN