A kind of preparation of organic vegetable dye and dyeing method thereof

A plant dye and dyeing method technology, applied in the field of dye extraction and dyeing, can solve the problems of large environmental pollution, high production cost, complex dye synthesis process, etc., and achieve the effects of reducing energy consumption, reducing energy consumption and accelerating extraction speed.

Active Publication Date: 2021-12-21
东阳市神农纺织品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, dyes are widely used and are an indispensable part of modern life. However, there are chromium, cerium, arsenic, and twenty-four kinds of aromatic amines in the chemical dye technology that cause serious harm to human body and environment, and the above dyes There are defects such as complex synthesis process, high production cost, and large environmental pollution

Method used

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  • A kind of preparation of organic vegetable dye and dyeing method thereof
  • A kind of preparation of organic vegetable dye and dyeing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The preparation method of organic vegetable dye:

[0036] (1) Mix the plant leaves and ethanol with a mass ratio of 1:3 in a countercurrent extraction equipment, then heat up to 70 ° C for 1 hour, and then perform countercurrent extraction to obtain the initial extract; the plant leaves are selected from tea leaves or holly leaves or Mulberry leaves or pine needles, etc.;

[0037] (2) Centrifuging the initial extract to obtain a first filtrate and a first filter residue, and subjecting the first filtrate to an adsorption treatment by a first solid-phase extraction column under an ultrasonic state to obtain a first effluent;

[0038](3) return the first filter residue and the first effluent to the countercurrent extraction equipment respectively, carry out countercurrent extraction again at 70° C., and then process according to the method of step (2) to obtain the second filter residue and the second effluent. In the step, the second solid phase extraction column is use...

Embodiment 2

[0045] The preparation method of organic vegetable dye:

[0046] (1) Mix the plant fruit and deionized water with a mass ratio of 1:3 in a countercurrent extraction equipment, then heat up to 60°C for 1 hour, and then carry out countercurrent extraction to obtain the initial extract; the plant fruit is selected from pomegranate peel or persimmon or dragon fruit peel, etc.;

[0047] (2) Centrifuging the initial extract to obtain a first filtrate and a first filter residue, and subjecting the first filtrate to an adsorption treatment by a first solid-phase extraction column under an ultrasonic state to obtain a first effluent;

[0048] (3) return the first filter residue and the first effluent to the countercurrent extraction equipment respectively, carry out countercurrent extraction again at 60° C., and then process according to the method of step (2) to obtain the second filter residue and the second effluent. In the step, the second solid phase extraction column is used for...

Embodiment 3

[0054] The preparation method of organic vegetable dye:

[0055] (1) Mix mahogany sawdust with a mass ratio of 1:3 and sodium bicarbonate solution with a concentration of 0.5g / L in a countercurrent extraction equipment, then heat up to 50°C for 1 hour, and then carry out countercurrent extraction to obtain the initial extract;

[0056] (2) Centrifuging the initial extract to obtain a first filtrate and a first filter residue, and subjecting the first filtrate to an adsorption treatment by a first solid-phase extraction column under an ultrasonic state to obtain a first effluent;

[0057] (3) return the first filter residue and the first effluent to the countercurrent extraction equipment respectively, carry out countercurrent extraction again at 50° C., and then process according to the method of step (2) to obtain the second filter residue and the second effluent. In the step, the second solid phase extraction column is used for adsorption treatment;

[0058] (4) The second ...

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Abstract

The invention discloses a preparation of an organic plant dye and a dyeing method thereof. The preparation method comprises the following steps: (1) mixing the extraction raw material with a solvent, keeping warm, and extracting in countercurrent; (2) centrifuging the initial extract to obtain the first The first filtrate is adsorbed under ultrasonic; (3) the first filter residue and the first effluent are respectively returned to the countercurrent extraction equipment for countercurrent extraction, and then processed according to step (2); (4) the second filter residue and the second The effluent is processed according to step (3); the three solid-phase extraction columns are desorbed respectively; (5) the pigment extract is transported to a vacuum reaction kettle, minerals and organic matter are added, and complexation is stirred; (6) The complexed primary product is dried, sieved, and ground for 3 to 10 hours. The preparation method of the invention has the characteristics of high pigment extraction rate, low solvent consumption, low energy consumption, high yield and high quality, the obtained dye can improve the color fastness of textiles, and the dyeing method has low energy consumption and production cost.

Description

technical field [0001] The invention relates to the technical field of dye extraction and dyeing, in particular to a preparation of organic vegetable dye and a dyeing method thereof. Background technique [0002] At present, dyes are widely used and are an indispensable part of modern life. However, there are chromium, septum, arsenic, twenty-four kinds of aromatic amines and other substances that are seriously harmful to human body and environment in chemical dye technology, and the above dyes There are defects such as complex synthesis process, high production cost, and great environmental pollution. [0003] Organic plant dyes refer to pigments extracted from natural flowers, grasses, trees, stems, leaves, fruits, seeds, skins, roots, etc. For example, the scraps and sawdust after the production of mahogany furniture are rich in polyphenols Pigment-like pigments have the advantages of non-toxic, harmless, non-polluting and renewable. When used in textile dyeing, they can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B61/00C09B67/54C09B67/00D06P1/34D06P1/673D06P1/653D06M13/00
CPCC09B61/00C09B67/0096C09B68/28D06P1/34D06P1/6735D06P1/6533D06M13/00D06M16/00D06M2200/25
Inventor 张永成
Owner 东阳市神农纺织品有限公司
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