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Dye liquor and black dye composition used for anodized aluminium dyeing and dyeing method

An anodized aluminum, black dye technology, applied in electrolytic coatings, surface reaction electrolytic coatings, coatings, etc., can solve problems such as color deviation, and achieve the effects of low price, simple process operation, and good dyeing reproducibility

Active Publication Date: 2019-07-16
绍兴市上虞嘉利盛助剂工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a black dye composition used for dyeing anodized aluminum and the corresponding dyeing solution and dyeing method, so as to solve the problem that the black mixed dye used for dyeing anodized aluminum is prone to shade when dyeing The problem of deviation

Method used

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  • Dye liquor and black dye composition used for anodized aluminium dyeing and dyeing method
  • Dye liquor and black dye composition used for anodized aluminium dyeing and dyeing method
  • Dye liquor and black dye composition used for anodized aluminium dyeing and dyeing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Prepare the black dye composition dyeing solution, the concentration of the dyeing solution is 1g / L in this example.

[0029] Weigh C.I. Acid Black 5 (8.0g, 40% by weight), C.I. Acid Black 109 (9.0g, 45% by weight), C.I. Acid Yellow 197 (2.0g, 10% by weight) and C.I. Acid Red 426 (1.0g, 5 % by weight) as the black dye composition, the black dye composition is dissolved in deionized water (15L), first adjust the pH to 5.5 with acetic acid, then add sodium acetate (200g) as a pH stabilizer, and finally add 5L of deionized water until the total volume of the solution reaches 20 L.

Embodiment 2

[0031] Prepare the black dye composition dyeing liquor, the dyeing liquor concentration is 2g / L in this example.

[0032] Weigh C.I. Acid Black 5 (8.0g, 40% by weight), C.I. Acid Black 109 (9.0g, 45% by weight), C.I. Acid Yellow 197 (2.0g, 10% by weight) and C.I. Acid Red 426 (1.0g, 5 % by weight) as the black dye composition, the black dye composition is dissolved in deionized water (8L), and the pH of the solution is adjusted to 5.5 with acetic acid, adding sodium acetate (100g) as a pH stabilizer, and finally adding 2L of deionized water until the total volume of the solution reaches 10 L.

Embodiment 3

[0034] Prepare the black dye composition dyeing liquor, the dyeing liquor concentration is 5g / L in this example.

[0035] Weigh C.I. Acid Black 5 (8.0g, 40% by weight), C.I. Acid Black 109 (9.0g, 45% by weight), C.I. Acid Yellow 197 (2.0g, 10% by weight) and C.I. Acid Red 426 (1.0g, 5 % by weight) as a black dye composition, the black dye composition was dissolved in deionized water (3L), and the pH of the solution was adjusted to 5.5 with acetic acid, sodium acetate (40g) was added as a pH stabilizer, and finally 1L of deionized water was added until the total volume of the solution reaches 4 L.

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Abstract

The invention belongs to the field of fine chemical engineering, and discloses a black dye composition used for anodized aluminium dyeing. The black dye composition is composed, by weight percent, 30to 50% of black dye A, 30 to 50% of black dye B, 5 to 15% of yellow dye and 1 to 10% of red dye. The invention further provides dye liquor prepared through the black dye composition. The invention further provides a method for using the dye liquor for carrying out anodized aluminium dyeing. Through the method, an aluminum part can obtain the state-stable and durable black.

Description

technical field [0001] The invention belongs to the field of fine chemicals, specifically relates to the field of anodized aluminum dyeing, in particular to a black dye composition used for anodized aluminum dyeing and a method for dyeing anodized aluminum. Background technique [0002] The chemical dyeing of anodized aluminum refers to firstly adopting the anodic oxidation process to form a layer of aluminum oxide film pores on the surface of the metal aluminum, then absorbing the dye in the dye bath and allowing the dye to enter the film pores, and finally sealing the film pores through the sealing process. Permanently fixes the dye to the aluminum surface. The aluminum parts dyed by this method are bright in color and bright in luster, and are widely used. [0003] The prior art has at least the following problems: the reproducibility of some colors is poor, and the color difference is obvious. This situation occurs especially in the reproducibility experiments of mixed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/14C25D11/24
CPCC25D11/14C25D11/24
Inventor 谢文革江华单建钢
Owner 绍兴市上虞嘉利盛助剂工业有限公司
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