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Blue-green series pigment with pearlescent effect and preparation method of pigment

A technology of pearlescent pigments and blue pigments, which is applied in the direction of inorganic pigment treatment, chemical instruments and methods, fibrous fillers, etc. It can solve the problems that the preparation method has not been reported in the literature, it is not suitable for coloring of pearlescent pigments, and the luster of pearlescent pigments is reduced.

Active Publication Date: 2015-07-29
GUANGXI CHESIR PEARL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional pigments of this type are synthesized by high-temperature calcination and high-temperature solid-state reaction. Obviously, this method is not suitable for the coloring of pearlescent pigments, and the mechanical mixing of the two pigments cannot be handled well, which reduces the luster of pearlescent pigments. Therefore, it is necessary to evenly coat a layer of cobalt blue pigments on the pearlescent pigments (flakes), so that the color fastness, brightness and tinting strength can achieve the best results.
[0005] A series of blue-green pearlescent effect pigments obtained by coloring pearlescent pigments with chromium-zinc-cobalt blue pigments and their preparation methods have not been reported in the literature

Method used

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  • Blue-green series pigment with pearlescent effect and preparation method of pigment
  • Blue-green series pigment with pearlescent effect and preparation method of pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] (1) Take 100 g of natural mica with a particle size of 10-60 microns, put it into a reaction kettle with a volume of 2 L, add 1000 milliliters of deionized water, and stir to make it evenly dispersed into a suspension;

[0060] (2) Heating the suspension in a constant temperature water bath and stabilizing it at 60°C, adjusting the pH of the suspension to 1.4 with 16% dilute hydrochloric acid;

[0061] (3) Add 100g of 2% SnCl 4 ·5H 2 O solution, Sn was added dropwise at an unsteady pH, and stirred at constant temperature for 15 minutes after the addition was complete.

[0062] (4) Adjust the temperature to 70°C, and slowly adjust the pH to 1.6 with liquid caustic soda (30% NaOH aqueous solution). Add 0.5M TiCl dropwise 4 Solution, keep the pH value constant with 30% liquid caustic soda NaOH solution. Reaction to blue interference color, stirring at constant temperature for 30 min.

[0063] (5) Adjust the temperature of the suspension to 65° C. and the pH to 7.5. 4...

Embodiment 2

[0069] (1) Take 100 g of natural mica with a particle size of 10-30 microns, put it into a reactor with a volume of 2 L, add 1000 milliliters of deionized water, and stir to make it uniformly dispersed into a suspension;

[0070] (2) Heating the suspension in a constant temperature water bath and stabilizing it at 65° C., adjusting the pH of the suspension to 1.7 with 16% dilute hydrochloric acid;

[0071] (3) Add 100g of 5% SnCl 4 ·5H 2 O solution, stirred at constant temperature for 15 min after the addition was completed.

[0072] (4) Adjust the temperature to 75°C, slowly adjust the pH to 1.9 with 20% aqueous sodium carbonate solution, and add 1M TiCl dropwise 4 solution, the pH was kept constant with 20% sodium carbonate solution. Reaction to blue interference color, stirring at constant temperature for 30 min.

[0073] (5) Adjust the temperature of the suspension to 70° C. and the pH to 8.2. 4.76g CoCl 2 ·6H 2 O, 8.18g ZnCl 2 , 15.99gCrCl 3 ·6H 2 O and 4.83g Al...

Embodiment 3

[0079] (1) Take 100g of natural mica with a particle size of 10-100 microns, put it into a reactor with a volume of 2L, add 1000 milliliters of deionized water, and stir to make it evenly dispersed into a suspension;

[0080] (2) Heating the suspension in a constant temperature water bath and stabilizing it at 75° C., adjusting the pH of the suspension to 2.0 with 16% dilute hydrochloric acid;

[0081] (3) Add 200g of 4% SnCl 4 ·5H 2 O solution, Sn was added dropwise at an unsteady pH, and stirred at constant temperature for 15 minutes after the addition was complete.

[0082] (4) Adjust the temperature to 80° C., and slowly adjust the pH to 2.2 with 16% sodium sulfite solution. Add 2M TiCl dropwise 4 Solution, keep the pH constant with 16% sodium sulfite solution. Reaction to blue interference color, stirring at constant temperature for 30 min.

[0083] (5) Adjust the temperature of the suspension to 75° C. and the pH to 8.8. 3.57g CoCl 2 ·6H 2 O, 10.22g ZnCl 2 , 39....

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Abstract

Blue-green series pearlescent pigment comprises the following components: 1), a substrate; 2), a SnO2 and TiO2 coating layer deposited on the substrate; and 3) a chromium, zinc and cobalt blue pigment coating layer deposited on the SnO2 and TiO2 coating layer, wherein the chromium, zinc and cobalt blue pigment coating layer comprises chromium oxide, zinc oxide, cobalt oxide and aluminum oxide or mainly comprises chromium oxide, zinc oxide, cobalt oxide and aluminum oxide. The invention further provides a method for preparing the blue-green series pearlescent pigment and an application of the blue-green series pearlescent pigment.

Description

technical field [0001] The invention relates to blue-green series pearlescent effect pigments and a preparation method thereof, belonging to the field of inorganic non-metallic effect pigments. Background technique [0002] A pearlescent pigment obtained by coating a transparent flake with a low refractive index as a substrate and coating one or more layers of metal oxides with a high refractive index (or alternately coating high and low refractive index oxides) has a colorful It has been widely used for its unique hue, bright luster, and color-dependent effects. However, because it is a light interference pigment, its colorability is poor. In order to enhance its colorability, the usual method is to physically deposit or mix transparent organic pigments. Organic pigments have bright color and complete color spectrum, but organic pigments are not resistant to high temperature and organic solvents, and are not resistant to weather and corrosion. Therefore, it is a better cho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/40C09C3/06C09D5/36C04B41/85C04B41/86
CPCC04B41/85C04B41/86C09C1/36C09C1/40C09D5/36
Inventor 杨伦全蒙延娟
Owner GUANGXI CHESIR PEARL MATERIAL CO LTD
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