Natural dye and dyeing method thereof

A technology of natural dyes and dyeing methods, applied in the field of natural dyes and dyeing of Ophiopogon japonicus flower stems, can solve problems such as no reports, and achieve the effects of good washing fastness, simple method and small color difference value.

Active Publication Date: 2012-05-09
CHANGZHOU MYSUN BIOLOGICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There is no report on the dyeing application of natural dyes for the stems of Ophiopogon japonicus broadleaves

Method used

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  • Natural dye and dyeing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] First, take the fresh stems of Ophiopogon japonicus broadleaves, wash them, and dry them at 70°C for 5 hours, weigh 20 g of the dried stems of Ophiopogon japonicus broadleaves, grind them mechanically to 20 mesh, place them in a four-neck flask, add Ethanol aqueous solution with volume percentage concentration of 30%, mass ratio of solid to liquid is 1:20, reflux leaching at 60°C for 5 hours, then filter; leaching filter residue with 50% ethanol aqueous solution for 3 hours, then filter again , after combining the two filtrates, concentrate and recover part of the ethanol under reduced pressure to obtain a dark green slurry-like natural dye for the stems of Ophiopogon japonicus broadleaves.

Embodiment 2

[0025] First, take the fresh flower stems of Ophiopogon japonicus broadleaves, wash them, dry them at 80°C for 4 hours, weigh 20g of dried Ophiopogon japonicus broadleaf stems, grind them mechanically to 50 mesh, place them in a four-neck flask, add 80% ethanol aqueous solution with a concentration of 80% by volume, the mass ratio of solid to liquid is 1:50, reflux leaching at a temperature of 90°C for 3 hours, and then filter; leaching the filter residue with 60% ethanol aqueous solution for 3 hours, and then filter again , after combining the two filtrates, concentrate and recover part of the ethanol under reduced pressure to obtain a dark green slurry-like natural dye for the stems of Ophiopogon japonicus broadleaves.

Embodiment 3

[0026] Embodiment three: the dyeing of Ophiopogon japonicus flower stem natural dye on real silk fabric

[0027] First, soak the silk fabric in water for 2 minutes, take it out, wring it dry, and set it aside. The mass ratio of the dye to the medium to be dyed is 2%, the pH value is 4, and the bath ratio is 1:20. Put the above-mentioned treated real silk fabrics into the dyed silk fabrics at a temperature of 60°C for 30 minutes, then take out the fabrics and undergo acidic soaping. The lotion is a solution composed of soap flakes and water with a mass ratio of 1:1000, the pH value is 7, and it is washed with water and then dried. The obtained silk fabric has uniform color, the color difference value ΔE is less than 0.4, the dye uptake rate reaches 75%, and the color fastness to washing reaches 3-4 grades. The washing fastness in all the examples of the present invention is determined according to the method of "GB / T 12490-2007 Textile Color Fastness to Home and Commercial Was...

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Abstract

The present invention relates to a natural dye of broadleaf liriope root scape, and a dyeing method for dyed media such as protein and cellulose by the natural dye. The dyeing method for the protein comprises that: the dyeing temperature is 60-95 DEG C, the pH value is 3-5, the bath ratio is 1:20-50, and the dyeing time is 30-80 minuets. The dyeing method for the cellulose comprises: (1) firstly carrying out modification: wherein the quality ratio of the natural modifier to the dyed media is 2-4%, the bath ratio is 1:15-40, the temperature is 50-95 DEG C, and the time is 60-80 minutes; (2) finally carrying out dyeing: the dyeing temperature is 70-95 DEG C, the pH value is 5-7, the bath ratio is 1:15-30, and the dyeing time is 50-90 minutes. According to the present invention, the used broadleaf liriope root scapes of the present invention are easily collected; the dyed fabric has fragrance; the method is simple, the requirements of the equipment are low, and the production process does not cause the pollution; the dyed finished product by the dyeing method of the present invention has characteristics of high dye uptake, good washing fastness resistance and small color difference.

Description

technical field [0001] The invention relates to a natural dye extracted from natural plants and a dyeing method, in particular to a natural dye of Ophiopogon japonicus broad-leaved stems and a dyeing method thereof. Background technique [0002] Plant dyes are pure natural dyes made from Chinese herbal medicines, flowers, tea leaves, fruits and other plants that are unique to our country through crushing, soaking, cooking and many other processes. They do not contain any chemical substances and are non-toxic, harmless, Pollution-free and renewable characteristics. [0003] Broad-leaved Ophiopogon japonicus belongs to Liliaceae Ophiopogon japonicus, a perennial evergreen or deciduous herb that is wildly distributed and cultivated in most parts of my country. It was first recorded in "Shen Nong's Materia Medica", with long and thin roots, many branches, and sometimes partially swelled into spindle-shaped small fleshy roots with stolons. Leaves broadly linear, leathery, basal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00C09B67/54D06P1/34D06P1/48D06P3/14D06P3/04D06P3/60D06P3/85
Inventor 戴萍马志辉何叶丽纪俊玲汪媛
Owner CHANGZHOU MYSUN BIOLOGICAL MATERIALS
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