Method for matching color and appearance of coatings containing effect pigments

A color and formula technology, applied in coating, color matching, color measuring devices, etc., can solve problems such as difficult matching

Active Publication Date: 2014-10-22
艾仕得涂料系统有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These color and appearance variations make it difficult to identify the best formula to get an excellent match at the dealership

Method used

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  • Method for matching color and appearance of coatings containing effect pigments
  • Method for matching color and appearance of coatings containing effect pigments
  • Method for matching color and appearance of coatings containing effect pigments

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0189] The coating of a 2002 Jeep Cherokee (target coating 1) was measured. Based on the vehicle's make, model year 2002 and its color code PDR, obtained from the ColorNet® automotive refinishing color system from E.I. du Pont de Nemours and Company, Wilmington, DE, USA, under the respective trademarks or registered trademarks (Table 1) A number of preliminary matching formulations (F1-F7) were retrieved.

[0190] The color data and gloss values ​​were measured using BYK-mac obtained from BYK-Gardner USA, Maryland, USA. The flop value of the vehicle coating is generated based on color data measured at 3 viewing angles selected from 15°, 45° and 110°. Gloss data based on figure 2 Images captured in the normal direction are shown with an illumination angle selected from 15° and 45°.

[0191] The flop properties of the matching formulations are stored in the ColorNet™ system's color database and have data compatible across the measured vehicle's viewing angle. The gloss prop...

Embodiment 2

[0204] The coating of a 2003 Ford Explorer (target coating 2) was measured. Based on the vehicle's make, model year 2003 and its color code JP, a number of preliminary matching formulas (F8-F13) were retrieved from the ColorNet™ automotive refinish color system (Table 3). This preliminary matching formula was analyzed as described above and ranked as shown in Table 4. Recipes in category group 2 were adjusted to produce subsequent matching recipes with subsequent CDIs (sub-CDIs).

[0205] Table 3. flop and gloss data. the

[0206] recipe number initial CDI Sub-CDI type Different colors S g 15 S g 45 ΔF ΔS g 15 ΔS g 45 Target Coat 2 - - - 9.80 7.62 7.55 - - - F8 - - 4 11.30 5.88 4.82 0.15 -1.74 -2.73 F9 2.70 1.40 2 9.28 7.29 6.46 -0.05 -0.33 -1.09 F10 - - 3 10.68 6.56 5.58 0.09 -1.06 -1.97 F11 3.20 1.80 2 10.24 7.37 6.13 0.05 -0.25 -1.42 F12 2.40 1.70 2 9.33 7.13 6....

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Abstract

A method for matching color and appearance of a target coating of an article is provided. The method includes the steps utilizing sparkle values of the target coating; color data of the target coating; and flop values based on the color data; to identify and select matching formulas based on sparkle differences, flop value differences, and color difference indexes. The method can be used for matching color and appearance of target coatings having effect pigments. This disclosure is also directed to a system for implementing the method. The method can be particularly useful for vehicle refinish repairs.

Description

field of invention [0001] The present invention relates to a method of matching the color and appearance of a target coating of an article, in particular a target coating comprising one or more effect pigments. The invention also relates to a system for matching the color and appearance of a target coating. Background of the invention [0002] Surface coatings containing effect pigments, such as light-absorbing pigments, light-scattering pigments, light-interference pigments and light-reflecting pigments, are known. Metallic flake pigments such as aluminum flakes are examples of such effect pigments and are particularly advantageous for the protection and decoration of automobile bodies. The effect pigments are capable of producing visible appearance effects, such as differential light reflection effects, often referred to as "flops"; flake appearance effects, which include the flake size distribution and the luster (sparkle) imparted by the flakes; and an enhanced depth p...

Claims

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Application Information

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IPC IPC(8): G01J3/50B60S5/00G01J3/46
CPCG01J3/504G01N21/57B05D5/005B60S5/00G01J3/463G01N21/255F04C2270/041
Inventor A.普拉卡什L.E.斯蒂恩赫克M.莫罕马迪A.B.J.罗德里格斯J.E.奥贝茨
Owner 艾仕得涂料系统有限责任公司
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