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Safflower yellow pigment and its preparation method and dyeing method

A technology of safflower yellow pigment and dyeing method, which is applied in the directions of dyeing method, chemical apparatus and method, organic dyes, etc., can solve problems such as waste of safflower yellow pigment, and achieve the effects of simple operation, good health and environmental protection.

Active Publication Date: 2022-02-18
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In view of the technical problems existing in the prior art, for example: safflower yellow is not fully utilized, and safflower yellow will cause unnecessary waste, the purpose of the present invention is to provide a kind of safflower yellow and its preparation method , safflower yellow is extracted from natural plants, and the preparation process of safflower yellow is green and pollution-free, which is beneficial to environmental protection and health, and will not damage safflower red

Method used

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  • Safflower yellow pigment and its preparation method and dyeing method
  • Safflower yellow pigment and its preparation method and dyeing method

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preparation example Construction

[0042] The inventors of the present invention found that safflower yellow pigment has good water solubility, while safflower red pigment is insoluble in water. Therefore, safflower yellow pigment can be obtained by dissolving in water. Specifically, a first aspect of the present invention provides a method for preparing safflower yellow pigment, which includes the following steps: soaking safflower in water, and collecting yellow pigment liquid after squeezing the safflower, wherein the The temperature of the water is 50°C or lower.

[0043] Specifically, in the present invention, the preparation method of the safflower yellow pigment comprises the following steps:

[0044] Step 1): After soaking the safflower in water below 50°C, squeeze it and let it stand to collect a yellow pigment liquid;

[0045] Step 2): put the extruded safflower in step 1) and soak it in water again, squeeze it again, and collect the secondary yellow pigment liquid; mix the primary yellow pigment li...

Embodiment 1

[0103] The present embodiment 1 and application example 1 use the following raw materials by weight: 50 g of bleached sheep wool, 200 g of dried safflower, 6 g of alum, and 1 g of cream of tartar.

[0104] Extraction of safflower yellow

[0105] 1. Soak safflower in 6L of water in a container, rub it with your hands and let it stand for 2 hours.

[0106] 2. Filter with cotton cloth to collect the yellow pigment liquid once.

[0107] 3. Put the filtered safflower into the container, inject 6L of water, stir evenly and soak for 12 hours.

[0108] 4. Filter, wrap the petals in cotton cloth and wring to extract the juice, collect the secondary yellow pigment liquid.

[0109] 5. Mix the yellow pigment liquid obtained twice and set aside.

Embodiment 2

[0133] The present embodiment 2 and application example 2 use the following raw materials by weight: 50 g of bleached mohair, 400 g of dried safflower, 6 g of alum, and 1 g of cream of tartar.

[0134] Extraction of safflower yellow

[0135] 1. Soak the safflower in 5.5L of water in a container, rub it with your hands and let it stand for 1.5 hours.

[0136] 2. Filter with cotton cloth to collect the yellow pigment liquid once.

[0137] 3. Put the safflower in the container again, inject 5.5L of water, stir evenly and soak for 13 hours.

[0138] 4. Filter, wrap the petals in cotton cloth and wring to extract the juice, collect the secondary yellow pigment liquid.

[0139] 5. Mix the yellow pigment liquid obtained twice and set aside.

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Abstract

The invention provides a safflower yellow pigment, a preparation method and a dyeing method thereof. The preparation method of the safflower yellow pigment comprises the following steps: soaking the safflower in water, squeezing the safflower and collecting the yellow pigment liquid, wherein the temperature of the water is below 50°C. The safflower yellow pigment of the invention can be extracted from safflower, and the preparation process of the safflower yellow pigment is green and pollution-free, which is beneficial to environmental protection and health, and will not damage the safflower yellow pigment. Furthermore, the safflower yellow pigment of the present invention is easy to operate, environmentally friendly and harmless when dyeing; it is especially suitable for dyeing wool fibers.

Description

technical field [0001] The invention relates to a safflower yellow pigment, a preparation method and a dyeing method thereof, and belongs to the field of dyestuffs. Background technique [0002] Safflower is an annual (spring sowing) or biennial (autumn sowing) herb of the Compositae family, and its petals contain safflower yellow pigment and safflower red pigment. Safflower yellow pigment (scientific name: Safflorgelb) is a chalcone compound, which is a kind of water-soluble natural yellow pigment with high content and has a wide range of applications. Because safflower yellow has the advantages of bright color, high temperature resistance, acid resistance, light resistance, reduction resistance and antimicrobial resistance, it can be used as a natural yellow dye. Its dyeing effect is good, especially suitable for dyeing wool, silk and other protein fibers. [0003] The chemical dyes used in the printing and dyeing industry have a serious impact on the natural environment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B61/00C09B67/54D06P1/34D06P1/36D06P1/653D06P1/673D06P3/14D06P3/20
CPCC09B61/00C09B67/0096D06P1/36D06P1/34D06P1/0032D06P3/20D06P3/14D06P1/6533D06P1/6735
Inventor 杨建军
Owner TSINGHUA UNIV
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