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Printing method for improving color fastness to light of natural dye cotinus coggygria pigment

A technology of cotinus pigment and natural dye, applied in the field of plant dyeing, can solve the problems of poor color fastness to light, poor printing and dyeing effect, poor dyeing rate, etc., achieve good compatibility, improve color fastness, and reduce light fading degree of effect

Active Publication Date: 2021-01-22
GAOMI ZHONGHE GARMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the research, it was found that the printing and dyeing effect of the conventional printing and dyeing process is not good
Because most of the natural dyes have complex components, it is difficult for the sumac pigment to diffuse into the fiber and combine with the fiber after it dissolves, so the dyeing rate of the sumac plant dye is poor, and the most important thing is the poor light fastness.

Method used

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  • Printing method for improving color fastness to light of natural dye cotinus coggygria pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Extraction of sumac pigment: After washing and drying red leaf sumac (leaves that turn red in autumn, from late October to early November), add water to soak for 2 hours at a mass ratio of 1:10, decoct for 90 minutes, filter, and collect The filtrate, adding the filter residue into water and decocting twice, combined the filtrate, concentrated it to 35% of the original volume by rotary evaporation, dried it in a vacuum oven to obtain the sumac pigment, and ground it into a 70-mesh powder.

[0032] (2) In parts by weight, take by weighing 55 parts of sumac pigments, 4 parts of nano titanium dioxide sol (mass concentration 20%), 3 parts of dopamine hydrochloride, 180 parts of water; add nano titanium dioxide sol successively under the dark environment And dopamine hydrochloride, sumac pigment, after stirring and mixing, adjust pH 6.5 with Tris-HCl buffer solution (0.05mol / L, pH 6.5), obtain sumac pigment dye mixture, keep away from light for subsequent use;

[0033] (...

Embodiment 2

[0038] (1) Extraction of sumac pigment: After washing and drying the red leaf sumac, put it in water at a mass ratio of 1:13, soak for 1 hour, decoct for 60 minutes, filter, collect the filtrate, add the filter residue into water and repeat decocting for 3 times, combine the filtrate, and rotate Concentrate by evaporation to 30% of the original volume, dry in a vacuum oven to obtain the sumac pigment, and grind it into a 60-mesh powder.

[0039] (2) In parts by weight, take by weighing 60 parts of sumac pigment, 3 parts of nano titanium dioxide sol (mass concentration 20%), 5 parts of dopamine hydrochloride, 200 parts of water; add nano titanium dioxide sol successively under the dark environment And dopamine hydrochloride, sumac pigment, after stirring and mixing, adjust pH 6.5 with Tris-HCl buffer solution (0.05mol / L, pH 6.5), obtain sumac pigment dye mixture, keep away from light for subsequent use;

[0040] (3) In parts by mass: 20 parts of bentonite, 7 parts of guar gum, ...

Embodiment 3

[0045] (1) Extraction of sumac pigment: After washing and drying the red leaf sumac, put it in water at a mass ratio of 1:15, soak it for 2 hours, decoct it for 90 minutes, filter it, collect the filtrate, add the filter residue into water and repeat decocting for 3 times, then combine the filtrate, rotate Concentrate by evaporation to 40% of the original volume, dry in a vacuum oven to obtain the sumac pigment, and grind it into an 80-mesh powder.

[0046] (2) In parts by weight, take by weighing 60 parts of sumac pigments, 5 parts of nano titanium dioxide sol (mass concentration 20%), 5 parts of dopamine hydrochloride, 200 parts of water; (mass concentration 20%), dopamine hydrochloride, and sumac pigment are added sequentially, after stirring and mixing, adjust pH 6.5 with Tris-HCl buffer solution (0.05mol / L, pH 6.5) to obtain the sumac pigment dye mixture, and keep away from light for subsequent use ;

[0047] (3) In parts by mass: 20 parts of bentonite, 20 parts of guar ...

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Abstract

The invention discloses a printing process for improving color fastness to light of natural dye cotinus coggygria pigment, and belongs to the technical field of plant dyeing. The preparation method comprises the following steps: firstly preparing a cotinus coggygria pigment dye mixed solution from cotinus coggygria pigment, nanometer titanium dioxide sol and dopamine hydrochloride, and preparing original printing paste with stable viscosity in cotinus coggygria pigment dye; then preparing color paste from the cotinus coggygria pigment dye mixed solution, the original paste and a color fixing agent (color fixing agent DS1315 and polyglutamic acid are mixed according to the mass ratio of 5:1) to dye real silk fabric. The indexes such as water-resistant color fastness, rubbing-resistant colorfastness, light-resistant color fastness and leveling property of the real silk fabric can be obviously improved. A metal ion mordant and a urea color fixing agent are not used, so that the emissionof ammonia-nitrogen wastewater is remarkably reduced, and environmental protection is facilitated.

Description

technical field [0001] The invention discloses a printing process for improving the light fastness of sumac pigment natural dyes, belonging to the technical field of plant dyeing. Background technique [0002] Natural dyes refer to dyes that are obtained from natural raw materials such as plants and animals and are rarely chemically processed. Natural dyes can be divided into plant dyes, animal dyes, mineral dyes and microbial fermentation pigments according to their sources. Plant dyes are obtained from the roots, leaves, trunks or fruits of plants, such as madder, comfrey, sumac, indigo, safflower, yellow gardenia, mulberry, tea, etc. There are fewer types of animal dyes, mainly shellac, cochineal and so on. Mineral dyes are various inorganic metal salts and metal oxides, such as cinnabar, malachite (green), copper oxide, ferric oxide, etc. The pigments fermented by microorganisms mainly include monascus pigment, gardenia blue, cocoa pigment, monascus yellow pigment, et...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/34D06P1/673D06P3/04D06P1/645D06P1/48D06M16/00D06M10/02D06P1/52D06M101/10
CPCD06P1/34D06P1/673D06P3/04D06P1/645D06P1/48D06M16/003D06M10/02D06P1/67383D06P1/5278D06M2101/10
Inventor 赵思久纪俊玲陈群汪媛彭勇刚焦炳勇
Owner GAOMI ZHONGHE GARMENT
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