Method for dyeing cotton fabric with green by means of natural pigments

A technology of natural pigments and cotton fabrics, applied in dyeing, textile and papermaking, etc., can solve the problems of low utilization rate of dyes, poor wet fastness, poor light fastness, etc., and achieve poor light fastness, good coloring strength, Strong tinting effect

Active Publication Date: 2019-01-08
HENAN INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Gardenia yellow and gardenia blue are used for dyeing cotton fabrics, usually have the problems of low dye uptake rate, low dye utilization rate, poor wet fastness and poor light fastness

Method used

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  • Method for dyeing cotton fabric with green by means of natural pigments
  • Method for dyeing cotton fabric with green by means of natural pigments
  • Method for dyeing cotton fabric with green by means of natural pigments

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Utilize natural pigment of the present embodiment to dye the back mordant dyeing method of green cotton fabric, step is as follows:

[0019] (1) Put the cotton fabric wetted by warm water into 40℃ containing gardenia yellow pigment 0.5% (owf), gardenia blue pigment 0.4% (owf), myrobalan extract (Henan Zhongda Hengyuan Biotechnology Co., Ltd. ) in 0.5% (owf) dyeing solution, bath ratio 1:30, heat up to 60°C at a heating rate of 2°C / min, keep warm for 20 minutes, add sodium chloride 10g / L to fully dissolve, and continue dyeing for 20 minutes;

[0020] (2) Put the dyed cotton fabric into a mordant solution containing 1% cerium chloride (owf) at 40°C, bath ratio 1:30, heat up to 60°C at a heating rate of 2°C / min, and keep warm for mordant dyeing for 30 minutes;

[0021] (3) Washing, neutral soaping, water washing, dehydration, natural drying or drying of the mordant cotton fabric. Namely: wash in cold water, wash in warm water at 50~60°C, soap wash with 3g / L neutral deterg...

Embodiment 2

[0023] Utilize natural pigment of the present embodiment to dye the back mordant dyeing method of green cotton fabric, step is as follows:

[0024] (1) Put the cotton fabric wetted by warm water into the dye solution containing 2.5% (owf) of gardenia yellow pigment, 3.5% (owf) of gardenia blue pigment and 1.5% (owf) of chebula extract at 40°C, bath Ratio 1:20, heat up to 70°C at a heating rate of 2°C / min, keep dyeing for 30 minutes, add sodium chloride 30g / L to fully dissolve, and continue dyeing for 30 minutes;

[0025] (2) Put the dyed cotton fabric into a mordant solution containing 4% alum (owf) at 40°C, bath ratio 1:20, heat up to 70°C at a heating rate of 2°C / min, and keep mordant for 50 minutes;

[0026] (3) Washing, neutral soaping, water washing, dehydration, natural drying or drying of the mordant cotton fabric.

Embodiment 3

[0028] Utilize natural pigment of the present embodiment to dye the back mordant dyeing method of green cotton fabric, step is as follows:

[0029] (1) Put the cotton fabric wetted by warm water into the dye solution containing 2% gardenia yellow pigment (owf), gardenia blue pigment 2% (owf), and myrobalan extract 1% (owf) at 40 °C, bath Ratio 1:25, heat up to 65°C at a heating rate of 2°C / min, keep warm for 25 minutes, add sodium sulfate 20g / L to fully dissolve, and continue dyeing for 25 minutes;

[0030] (2) Put the dyed cotton fabric into a mordant solution containing 3% lanthanum chloride (owf) at 40°C, bath ratio 1:25, heat up to 65°C at a heating rate of 2°C / min, and keep mordant for 40 minutes;

[0031] (3) Washing, neutral soaping, water washing, dehydration, natural drying or drying of the mordant cotton fabric.

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Abstract

The invention discloses a method for dyeing cotton fabric with green by means of natural pigments. The cotton fabric is dyed according to the technology of dyeing, post-mordant treatment and aftertreatment. In dye liquor, the mass ratio of a gardenia yellow pigment to a gardenia blue pigment ranges from 5:4 to 5:7, and the use amount of the gardenia yellow pigment ranges from 0.5% owf to 2.5% owf;the use amount of a myrobalan extract ranges from 0.5% owf to 1.5% owf; a neutral electrolyte is sodium chloride or sodium sulfate, and the use amount of the neutral electrolyte ranges from 10 g / L to30 g / L; and in mordant dyeing liquor, the use amount of a mordant dyeing agent ranges from 1% owf to 4% owf. According to the method, the wet treatment fastness of the dyed fabric can be effectivelyimproved through complexing of the natural pigments, the mordant dyeing agent and cellulose fibers by the aid of the post-mordant dyeing method. The cotton fabric is dyed by means of the natural pigments, the environment-friendly mordant dyeing agent is used, and the requirements for environmental protection and physical fitness of people are met. Zinc sulfate, lanthanum chloride, cerium chloride,alum and aluminum sulfate are used as the mordant dyeing agent, and thus the green cotton fabric can be obtained.

Description

technical field [0001] The invention belongs to the technical field of fabric dyeing, in particular to a method for dyeing cotton fabric green with natural pigments. technical background [0002] Natural pigments are born in nature and end in nature. They have good compatibility with the environment, are biodegradable, do not produce toxic substances, do not irritate the skin, and are not carcinogenic. Natural pigment dyeing products have natural color, soft and unique tone. At present, green environmental protection has become a new label in the textile industry. Natural pigment dyeing products are more and more favored by consumers, and the demand for products is increasing day by day. However, there is a problem of incomplete color spectrum in natural pigment dyeing, especially the lack of green. Prepare copper chlorophyllin sodium salt, which contains heavy metal copper ions, and its application in textile dyeing is limited. In order to enrich the color spectrum of natu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/34D06P3/60D06P1/673D06P5/02
CPCD06P1/34D06P1/6735D06P3/60D06P5/02
Inventor 宋慧君梅洪稳李新阳朱超宇钞意元尹旭初
Owner HENAN INST OF ENG
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