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Lotus leaf dyestuff and its extraction method and method of dyeing wool and wool fabric using said

A technology for wool fabrics and lotus leaves, which is applied in the field of lotus leaf plant dyes and its extraction, which can solve the problems of limited dosage and harm to human body, and achieve the effects of less dosage, stable and mild dyeing conditions, and simple extraction process

Inactive Publication Date: 2004-12-22
HAILAN GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional methods use heavy metal chromium and copper salts as mordants, which are restricted by domestic and foreign environmental protection standards because they are harmful to the human body.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Wool compound enzyme modification—wool underwear

[0024] 1) Hydrogen peroxide pre-treatment wool fabric: 30% hydrogen peroxide 20ml / L, sodium pyrophosphate 1.25g / L, Pingping plus 0.5% cloth weight percentage, temperature 45°C, time 30min;

[0025] 2) Combined enzyme treatment of woolen fabric: PH = 7.5-8, take purified and guaranteed activity of papain 0.3% cloth weight percentage, subtilisin 0.7% cloth weight percentage, temperature 45 ° C, time 30 min, bath ratio 1:30.

Embodiment 2

[0026] Embodiment 2: lotus leaf dye dyeing process——wool fabric

[0027] 1) Pigment extraction: Boil lotus leaves with 10 times soft water for 2 hours, filter to obtain the stock solution, and then spray-dry to obtain pigment bodies.

[0028] 2) ecological pretreatment: with embodiment 1.

[0029] 3) Dyeing:

[0030] a) Aluminum mordant treatment: mordant dyeing of the enzyme-treated wool fabric with 5% aluminum sulfate by cloth weight at a temperature of 60°C, a heating rate of 2°C / min, heat preservation for 30min, and a liquor ratio of 1:20.

[0031] b) Lotus leaf dyeing: take 3% of the chromoplasts obtained in 1) and dye them in percentage of cloth weight, the initial dyeing temperature is 30°C, the heating rate is 0.5°C / min, and the temperature is kept at 60°C for 1 hour, and the liquor ratio is 1:20.

Embodiment 3

[0032] Embodiment 3: lotus leaf dye dyeing process---wool underwear

[0033] 1) Pigment extraction: the same as in Example 2 for pigment extraction.

[0034] 2) ecological pretreatment: with embodiment 1.

[0035] 3) Dyeing:

[0036] a) Neodymium mordant treatment: mordant dyeing of the enzyme-treated wool fabric with 0.3% neodymium chloride by weight percentage, temperature 80°C, heating rate 1°C / min, heat preservation 30min, liquor ratio: 1:20.

[0037] b) Lotus leaf dyeing: take 3% of the chromoplasts obtained in 1) and dye them in percentage of cloth weight, the initial dyeing temperature is 30°C, the heating rate is 0.5°C / min, the temperature is kept at 80°C for 1 hour, and the liquor ratio is 1:40.

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PUM

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Abstract

A lotus leaf dye is extracted from lotus leaves. Its extracting process is also disclosed. A method for using said lotus leaf dye to dye wool or wool fabric includes ecological pretreating, modifying wool by the composite enzyme consisting of subtilisin and papain, and mordant dyeing. Its advantage is high dyeing effect.

Description

Technical field: [0001] The invention relates to a lotus leaf vegetable dye for dyeing wool and woolen fabrics and an extraction method thereof, and a dyeing method for dyeing wool and woolen fabrics with the lotus leaf dye. It belongs to the technical field of dye and its extraction method and textile dyeing and finishing. Background technique: [0002] Some raw materials, intermediates, or some dyes themselves of synthetic dyes commonly used for dyeing wool and woolen fabrics are carcinogens, which not only seriously pollute the environment, but also directly harm the wearers and producers, and are banned. Synthetic dyes that are not prohibited are mainly derived from petroleum. In the long run, resources are becoming increasingly scarce and do not meet the requirements of sustainable development. For this reason, the application of natural dyes in textiles has received more attention in recent years, cleaner production is booming, and green and environmentally friendly p...

Claims

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Application Information

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IPC IPC(8): C09B61/00D06P1/34D06P3/14
Inventor 程文红张新龙周启澄王璐贾舜华赵国英
Owner HAILAN GRP
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