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Preparation method of coconut shell extract/modified konjac glucomannan compound dye-fixing agent

A technology of konjac glucomannan and coconut shell, applied in the field of dyeing, can solve the problems of releasing formaldehyde and affecting human health, etc., and achieve the effects of preventing color fading, improving UV protection, and improving color fastness

Inactive Publication Date: 2019-03-08
嘉兴珠韵服装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The commonly used color fixing agent Y will release formaldehyde after use, which will affect human health

Method used

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  • Preparation method of coconut shell extract/modified konjac glucomannan compound dye-fixing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Wash the coconut shell and dry it, crush it mechanically to powder, weigh 50g of powder, soak it overnight with 250mL 65wt% ethanol solution, and then perform ultrasonic extraction. The ultrasonic extraction power is 300w, the extraction time is 15min, and the extraction temperature is 60°C , to obtain the ethanol extract for subsequent use;

[0022] (2) Extract the ethanol extract with n-butanol solution. During each extraction, the volume ratio of the ethanol extract to n-butanol is 1:4, shake and stand for three times, and the extracts are combined to obtain n-butanol. The butanol extract is ready for use;

[0023] (3) Add the n-butanol extract to the rotary evaporator, adjust the vacuum indication value of the rotary evaporator to -0.08MPa, and the temperature is 70°C, add 0.2 times the volume of the n-butanol extract to deionized water, and observe When the solvent evaporates, stop the experiment to obtain the concentrated solution, and dry it at 60°C to obtai...

Embodiment 2

[0027] (1) Wash the coconut shell and dry it, crush it mechanically to powder, weigh 50g of powder, soak it overnight with 150mL 65wt% ethanol solution, and then perform ultrasonic extraction. The ultrasonic extraction power is 400w, the extraction time is 5min, and the extraction temperature is 80°C , to obtain the ethanol extract for subsequent use;

[0028] (2) Extract the ethanol extract with n-butanol solution. During each extraction, the volume ratio of the ethanol extract and n-butanol is 1:2. After shaking, stand still and extract three times altogether. The extracts are combined to obtain n-butanol. The butanol extract is ready for use;

[0029] (3) Add the n-butanol extract to the rotary evaporator, adjust the vacuum indicator value of the rotary evaporator to -0.08MPa, and the temperature is 70°C, add deionized water of 1 volume of the n-butanol extract, and observe When the solvent evaporates, stop the experiment to obtain the concentrated solution, and dry it at ...

Embodiment 3

[0033] (1) Clean the coconut shell and dry it, crush it mechanically to powder, weigh 50g of powder, soak it overnight with 210mL 65wt% ethanol solution, and then perform ultrasonic extraction. The ultrasonic extraction power is 330w, the extraction time is 13min, and the extraction temperature is 65°C , to obtain the ethanol extract for subsequent use;

[0034] (2) Extract the ethanol extract with n-butanol solution. During each extraction, the volume ratio of the ethanol extract and n-butanol is 1:3.5, shake and leave standstill, and extract three times altogether, and the extracts are combined to obtain n-butanol. The butanol extract is ready for use;

[0035] (3) Add the n-butanol extract to the rotary evaporator, adjust the vacuum indication value of the rotary evaporator to -0.08MPa, and the temperature is 70°C, add 0.4 times the volume of the n-butanol extract to deionized water, and observe When the solvent evaporates, stop the experiment to obtain the concentrated so...

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Abstract

The invention provides a preparation method of a coconut shell extract / modified konjac glucomannan compound dye-fixing agent. The method includes the steps: crushing coconut shells into powder, extracting the powder by ethanol solution, extracting the extracted powder by n-butyl alcohol solution to obtain n-butyl alcohol extracts, adding the n-butyl alcohol extracts into a rotary evaporator to concentrate the n-butyl alcohol extracts, and drying concentrated solution to obtain coconut shell extract powder for standby application; taking konjac glucomannan, placing the taken konjac glucomannaninto a reaction kettle, adding acetic acid aqueous solution and glycidol to perform reaction, cooling mixture to remove redundant reaction liquid, freeze-drying the mixture to obtain modified konjac glucomannan, adding the modified konjac glucomannan into a reactor, adding deionized water to sufficiently mixing mixture, adding the coconut shell extract powder and Twain-20, heating and uniformly stirring mixture to obtain the compound dye-fixing agent. The prepared compound dye-fixing agent can effectively improve color fastness after dyeing, particularly, effectively improve wet rubbing fastness and can also prevent color losing caused by ultraviolet irradiation, and the color fastness is further improved.

Description

technical field [0001] The invention relates to the technical field of dyeing, in particular to a preparation method of a coconut shell extract / modified konjac glucomannan composite color fixing agent. Background technique [0002] The dyes usually have soluble groups. After the fibers and fabrics are dyed, the wet fastness may be poor, and fading and staining may occur, making the textiles look old. In order to overcome these phenomena, it is usually necessary to carry out color-fixing treatment to the dyed fabric. Fixing agent can improve the dye retention rate and wet fastness in the dyeing process, which is of great significance for improving product quality, reducing production costs and reducing pollution. The commonly used color fixing agent Y will release formaldehyde after use, which will affect human health. The future development of color fixing agents should not only do more research on color fixing performance, but also comply with the concept of environmental...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P5/04D06P5/08
CPCD06P5/04D06P5/08
Inventor 张杰
Owner 嘉兴珠韵服装有限公司
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