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Natural staining agent, preparation thereof and application thereof to silk dyeing

A natural dyeing agent and mordant technology, applied in the field of natural dyeing agent and its preparation, can solve the problems of poor color fastness to washing, high production cost, difficulty in popularization and application, etc., achieve good dyeing effect, strong practicability, Apply a wide range of effects

Inactive Publication Date: 2008-10-08
CHONGQING ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing natural dyes have single color, poor dyeing effect, poor color fastness, especially washing fastness, and high production cost, so it is difficult to popularize and apply them on a large scale.

Method used

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  • Natural staining agent, preparation thereof and application thereof to silk dyeing
  • Natural staining agent, preparation thereof and application thereof to silk dyeing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1: a kind of natural dyeing agent, it is characterized in that it is that the tea polyphenol in fresh tea leaf is extracted with fresh tea leaf as raw material, then adds mordant to make in tea polyphenol extraction liquid again.

[0040] Its concrete preparation steps are as follows:

[0041] Material selection: Fresh leaves of tea trees from April to October are used, free from rot, inclusions, and sand. The standard for fresh leaves is one bud and one leaf;

[0042] Raw material cleaning: the cleaning water must meet the GB5749 standard, and the water should be washed repeatedly until the water is clear;

[0043] Crushing: use a hammer cutter to break into particles of about 20 mesh;

[0044] Extraction: adopt stainless steel extraction tank to extract by microwave heating, microwave heating frequency is 2400~2500MHz, heating extraction temperature is 60 ℃, extraction time is 9 minutes; The dosage ratio of fresh tea leaves and water (hereinafter referred...

Embodiment 2～ Embodiment 11

[0050] Repeat the steps described in Example 1, wherein the various process parameters involved are shown in Table 8, and the rest are the same as in Example 1.

[0051] The dyeing effects of the products of Examples 2 to 4 applied to gray fabrics of natural silk fabrics are shown in Table 1 above.

[0052] Table 8: Various process parameters in Embodiment 2 to Embodiment 11 of the present invention

[0053]

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Abstract

The invention provides a natural coloring agent, which is characterized in that: the fresh tea leaves are used as material to extract tea polyphenol, and then the extraction liquid of the tea polyphenol is added with mordant agent, so as to form the natural coloring agent. As the natural coloring agent has rich color, good dyeing effect, good dyeing fastness (in particular wash fastness), and low production cost, the natural coloring agent has wide application, and strong practicality. The natural coloring agent also provides a preparation method of natural dyeing agent and an application at the aspect of silk fabric dyeing.

Description

technical field [0001] The invention relates to a natural dyeing agent and a preparation method thereof, and also relates to the application of the dyeing agent in silk fabric dyeing. Background technique [0002] Before the nineteenth century, all dyes used in dyeing and printing were natural animal, plant and mineral dyes (pigments). In 1856, Britain discovered the first synthetic dye, aniline violet, which opened up a new era of synthetic dyes. Since then, the dye industry has really matured. Since then, basic dyes such as synthetic dyes basic magenta, basic magenta green, and basic magenta violet have appeared one after another. In the second half of the 19th century, azo dyes and aromatic methane dyes developed rapidly. Back in the 20th century, due to the rapid development of the textile industry, a large number of varieties with bright color, high color strength, excellent dyeing performance and good fastness were continuously developed, and high-end dye series such...

Claims

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Application Information

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IPC IPC(8): D06P1/34D06P3/04C09B61/00C09B65/00
Inventor 高飞虎蒋明才张玲尹旭敏张超曾顺德
Owner CHONGQING ACAD OF AGRI SCI
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