Preparation technology of cochineal pigment with colorful effect

A technology of cochineal red and preparation process, which is applied in the directions of inorganic pigment processing, organic dyes, fibrous fillers, etc., can solve problems such as not involving the application field of cochineal red, and achieve the effect of high looseness

Inactive Publication Date: 2013-12-04
杭州弗沃德精细化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] Japanese Patent Publication No.: 1388821 discloses a purified cochineal red material and a method of producing it, which overcomes th...

Method used

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  • Preparation technology of cochineal pigment with colorful effect
  • Preparation technology of cochineal pigment with colorful effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The pearl red pearlescent pigment FWD215 was used as the transparent flake substrate to prepare cochineal pigment. Its preparation steps are:

[0038] a. Dissolve cochineal in deionized water to make 30mL of cochineal solution with substrate coating rate of 1.5% and mass concentration of 15g / L;

[0039] b. Dissolve aluminum trichloride in deionized water to prepare 30 mL of aluminum trichloride solution with a molar concentration of aluminum ions of 0.13 mol / L;

[0040] c. Put 30g of pearl red pearlescent pigment with an average particle size of 10-60μm into the reactor, add 450mL of deionized water, stir and heat up to 25°C, adjust the pH value to 6.3 with hydrochloric acid solution, and make a suspension;

[0041] d. Pump carmine solution and aluminum chloride solution into the reactor in parallel with a constant flow pump, and use 0.5mol / L sodium hydroxide solution to keep the pH constant, and add cochineal red at the same time within 2 to 3 hours solution and alum...

Embodiment 2

[0044] The pearl red pearlescent pigment FWD215 was used as the transparent flake substrate to prepare cochineal pigment. Its preparation steps are:

[0045] a. Dissolving cochineal in deionized water to prepare 40 mL of cochineal solution with a substrate coating rate of 2.0% and a mass concentration of 15 g / L;

[0046] b. Dissolve aluminum trichloride in deionized water to prepare 40 mL of aluminum trichloride solution with a molar concentration of aluminum ions of 0.13 mol / L;

[0047] c. Put 30g of pearl red pearlescent pigment with an average particle size of 10-60μm into the reactor, add 450mL of deionized water, stir and heat up to 25°C, adjust the pH value to 6.3 with hydrochloric acid solution, and make a suspension;

[0048] d. Pump carmine solution and aluminum chloride solution into the reactor in parallel with a constant flow pump, and use 0.5mol / L sodium hydroxide solution to keep the pH constant, and add cochineal red at the same time within 2 to 3 hours soluti...

Embodiment 3

[0051] The pearl red pearlescent pigment FWD215 was used as the transparent flake substrate to prepare cochineal pigment. Its preparation steps are:

[0052] a. Dissolve cochineal in deionized water to make 50mL of carmine solution with substrate coating rate of 2.5% and mass concentration of 15g / L;

[0053] b. Dissolve aluminum trichloride in deionized water to prepare 50 mL of aluminum trichloride solution with a molar concentration of aluminum ions of 0.13 mol / L;

[0054] c. Put 30g of pearl red pearlescent pigment with an average particle size of 10-60μm into the reactor, add 450mL of deionized water, stir and heat up to 25°C, adjust the pH value to 6.3 with hydrochloric acid solution, and make a suspension;

[0055] d. Pump carmine solution and aluminum chloride solution into the reactor in parallel with a constant flow pump, and use 0.5mol / L sodium hydroxide solution to keep the pH constant, and add cochineal red at the same time within 2 to 3 hours solution and alumin...

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Abstract

The invention relates to a preparation technology of a cochineal pigment with a colorful effect, and belongs to the field of preparing strong-interference pigments based on multiple coated sheet base materials. The cochineal pigment with the colorful effect is prepared by using aluminum salt, cochineal and a transparent sheet base material as raw materials, performing continuous stirring at normal temperature and pressure, performing reaction on the mixture under the condition that the pH value is maintained at 6.3-6.5, and then performing filtrating, washing and drying to obtain a finished product. The preparation technology of the cochineal pigment is simple in technological process and high in production efficiency, and can obtain the nacreous pigment with rich hues, bright colors and colorful effect; the obtained cochineal pigment is nontoxic, can be widely used in the fields of food, cosmetics, medicine, textile dyeing and the like, and enlarges the application range of the cochineal.

Description

technical field [0001] The invention relates to a preparation process of carmine pigment with illusion effect, which belongs to the preparation of strong interference pigments based on multi-coated flake substrates. Background technique [0002] Carmine (also known as carminic acid, carmine) is an anthraquinone natural pigment, which mainly exists in the body of the female cochineal insect Dactylopius coccus costa (also known as "Coccus cacti L."). Different from other natural pigments, its physical and chemical properties are very stable, it is an excellent colorant for food, cosmetics, medicine and textiles, and it is also the only natural pigment approved by FDA for both food, medicine and cosmetics. Depending on the pH, carmine can range in color from orange-yellow to red to purple. [0003] At present, carmine mainly has the following commodity forms: [0004] 1. Cochineal extract [0005] Also known as carminic acid extract, it is a concentrated solution obtained b...

Claims

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Application Information

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IPC IPC(8): C09B67/20C09C3/08C09C3/06
Inventor 高勇蒋汉文周亚军周峰沈艳娥
Owner 杭州弗沃德精细化工有限公司
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