Preparation method of salvia miltiorrhiza bunge vegetable dye and method for dyeing cotton fabrics using salvia miltiorrhiza bunge vegetable dye

A plant dye and cotton fabric dyeing technology is applied in the field of preparation of natural plant dyes of Salvia miltiorrhiza. Soft and natural color effect

Inactive Publication Date: 2009-11-04
FUJIAN QINGYUAN TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the red tanshinone components do not contain water-soluble groups, they are difficult to dissolve directly in water, but are easily soluble in organic solvents, which limits the use of red pigments to a certain extent.
So far, there has been no report on the use of Danshen as a dye

Method used

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  • Preparation method of salvia miltiorrhiza bunge vegetable dye and method for dyeing cotton fabrics using salvia miltiorrhiza bunge vegetable dye
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preparation example Construction

[0025] The preparation method of the present invention generally comprises the following steps:

[0026] (1) Extraction: Put the root of Salvia miltiorrhiza in a solvent, the solvent is any kind of alcohol, ketone and ester solvent, or a mixed solvent composed of these solvents, and use heating and reflux, cold soaking, hot soaking, percolation, ultrasonic extraction, etc. Extraction, microwave extraction. A preferred extraction method: take the root of Salvia miltiorrhiza and put it in 60-90% ethanol whose mass is 5-12 times that of the root of Salvia miltiorrhiza, and extract it under reflux for 2-3 times, each time for 1-2 hours.

[0027] (2) Crude product preparation: the extract was filtered and concentrated under reduced pressure to obtain a liquid extract to obtain the crude product I. Crude product I was dissolved and suspended in water, filtered to obtain a filter cake, and the filter cake was dried under reduced pressure to obtain crude product II. The crude produc...

Embodiment 1

[0035] Embodiment 1: the preparation method of salvia miltiorrhiza plant dye is as follows:

[0036] Take 1 kg of Danshen root slices, add 8 liters of 85% ethanol, soak at room temperature for 5 hours, then reflux for 2 hours, filter the extract; put the residue in 5 liters of 85% ethanol, reflux for 2 hours, and filter the extract. The two extracts were combined, concentrated under reduced pressure to obtain a liquid extract, and the crude product I was obtained, until the ethanol in the crude product I volatilized and no longer had the smell of ethanol. Add 200 milliliters of water to the crude product I, stir and filter, put the filter cake in a vacuum drying oven at 40°C and dry under reduced pressure, and then pulverize after drying to obtain the natural vegetable dye of Danshen.

Embodiment 2

[0037] Embodiment 2: the preparation method of salvia miltiorrhiza plant dye is as follows:

[0038]After pulverizing the root of Salvia miltiorrhiza that passes No. 4 sieve, get 1 kilogram and pack in the percolation bucket, add 20 liters of 90% ethanol and carry out percolation. The percolation liquid is filtered and then concentrated under reduced pressure to obtain a liquid extract to obtain the crude product I, until the ethanol in the crude product I volatilizes and no longer has the smell of ethanol. Add 1000 milliliters of water and 1000 milliliters of chloroform (trichloromethane) to the crude product I for extraction, extract three times in total, combine the chloroform extracts, concentrate to dryness under reduced pressure, and dry the paste in a vacuum oven at 40°C to dry under reduced pressure. Dried and crushed to obtain Danshen natural plant dye with high color level.

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Abstract

The invention discloses a preparation method of a natural salvia miltiorrhiza bunge vegetable dye. Salvia miltiorrhiza bunge is used as a raw material of a natural vegetable dye to prepare the naturalsalvia miltiorrhiza bunge vegetable dye. The invention also provides a method for dyeing cotton fabrics using the natural salvia miltiorrhiza bunge vegetable dye. The natural salvia miltiorrhiza bunge vegetable dye can be prepared by one of such methods as solvent extraction method, solvent extraction, macroporous resin method, column chromatography, supercritical counter-current extraction and the like or arbitrary combination of multiple methods. The prepared natural salvia miltiorrhiza bunge vegetable dye is red fat-soluble dye. The method for dyeing cotton fabrics adopts vat dyeing. The dyed cotton fabrics are red, uniform, soft and natural in colors and high in color fastness, and are not easy to fade and change color. The natural salvia miltiorrhiza bunge vegetable dye has the advantages of innocuity and no pollution, etc, and has certain medical health care function. Besides, the dyeing method of the invention is simple and can be greatly applied to health care underwear, household textile products and the like.

Description

technical field [0001] The invention relates to the fields of light chemical dyes and printing and dyeing, in particular to a preparation method of salvia miltiorrhiza natural plant dye and a method for dyeing cotton fabrics. Background technique [0002] Today, when the world advocates health, returning to nature and advocating environmental friendliness, the harm of synthetic dyes to the human body and the pollution to the environment have attracted more and more attention. And natural dyes, especially natural dyes of Chinese herbal medicines are extracted from plants, which have good compatibility with the environment, are biodegradable, are not only non-toxic and harmless, but even have special medicinal and health care functions for the human body, so they are increasingly favored by people. . According to the development and application of natural dyes of Chinese herbal medicines such as Deng Yun ("Chinese Medicinal Materials" 2008 No. 9) and other related reports, a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00D06P1/34D06P1/81D06P3/64D06P5/04
CPCY02P20/54
Inventor 邓贇朱利霞刘明华付时雨
Owner FUJIAN QINGYUAN TECH
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