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Modified gardenia yellow and method for dyeing cationic modified cellulose fabric by using modified gardenia yellow

A technology of cellulose fiber and gardenia yellow, applied in the field of textile dyeing and finishing, can solve the problems of low light fastness and perspiration fastness, increased energy level, oxidation reaction, etc., and achieve the reduction of non-renewable mineral resources And the use of chemical raw materials, good biodegradable performance, the effect of improving reaction rate and yield

Active Publication Date: 2017-01-04
GUANGDONG ESQUEL TEXTILES CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the good water solubility of gardenia yellow and the long-chain conjugated polyene structure, the electron cloud density of the system is relatively high, and it is easy to absorb light energy under light conditions, the energy level rises, and oxidation reactions occur, and light is easy to cause Pigment degradation destroys the hair color system of natural dyes, decomposes and fades, and lowers the light fastness and perspiration fastness
At present, researchers mostly add metal mordants to improve the color fastness of dyed fabrics, but because textile standards restrict the use of some metal ions, and the mordants left in the dye bath after dyeing will cause certain pollution problems, fabric plasma pretreatment There are certain difficulties in realizing industrialization of technologies such as processing and adding UV absorbers

Method used

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  • Modified gardenia yellow and method for dyeing cationic modified cellulose fabric by using modified gardenia yellow
  • Modified gardenia yellow and method for dyeing cationic modified cellulose fabric by using modified gardenia yellow
  • Modified gardenia yellow and method for dyeing cationic modified cellulose fabric by using modified gardenia yellow

Examples

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Effect test

Embodiment 1

[0035] This example provides a modified natural dye gardenia yellow and a method for dyeing cationic modified cotton fabric using it.

[0036] The preparation method of modified natural dye gardenia yellow comprises the following steps:

[0037] Add 0.5g gardenia yellow in the three-necked flask, a certain amount of NaOH (the amount is set to 0.06g, 0.07g, 0.08g, 0.09g, 0.10g respectively) and 80mL n-butanol to condense and reflux, and the three-necked flask is refluxed during the condensation and reflux process. The flask is heated from normal temperature to 70°C (during the heating process, a magnetic stirrer is used to magnetically stir the reactants in the flask, and the stirring time can be 10 minutes), and the temperature is kept and stirred for 3.0 hours to obtain the product liquid;

[0038] After cooling the product solution to room temperature, the n-butanol was removed by rotary evaporation, and then dried at 100°C to obtain the modified natural dye gardenia yellow....

Embodiment 2

[0052] This example provides a modified natural dye gardenia yellow and a method for dyeing cationic modified cotton fabric using it.

[0053] The preparation method of modified natural dye gardenia yellow comprises the following steps:

[0054] Add 0.5g gardenia yellow, 0.09g NaOH and a certain amount of n-butanol (the amount is set to 60mL, 70mL, 80mL, 90mL, 100mL respectively) into the three-necked flask, condense and reflux, and raise the temperature to 70°C at room temperature (during the heating process, the magnetic After stirring for 10 min), heat-insulated and stirred for 3.0 h to obtain the product solution;

[0055] After cooling the product solution to room temperature, the n-butanol was removed by rotary evaporation, and then dried at 100°C to obtain the modified natural dye gardenia yellow.

[0056] Utilize above-mentioned modified natural dye gardenia yellow to carry out dyeing through the cotton fabric of cationic modification, dyeing process is as follows:

...

Embodiment 3

[0065] This example provides a modified natural dye gardenia yellow and a method for dyeing cationic modified cotton fabric using it.

[0066] The preparation method of modified natural dye gardenia yellow comprises the following steps:

[0067] Add 0.5g gardenia yellow, 0.09g NaOH and 80mL n-butanol into the three-necked flask, condense and reflux, stir magnetically at room temperature for 10min, then raise the temperature to a certain temperature (the temperature is set to 60°C, 70°C, 80°C, 90°C, 100°C), heat-preserved and stirred for 3.0 hours to obtain the product solution;

[0068] After cooling the product solution to room temperature, the solvent was removed by rotary evaporation, and then dried at 100°C to obtain the modified natural dye gardenia yellow.

[0069] Utilize above-mentioned modified natural dye gardenia yellow to carry out dyeing through the cotton fabric of cationic modification, dyeing process is as follows:

[0070] Preparation of dyeing solution: the...

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Abstract

The invention provides modified gardenia yellow and a method for dyeing cationic modified cellulose fabric by using modified gardenia yellow. The preparation method of the modified natural dye gardenia yellow comprises the following steps: adding natural dye gardenia yellow, sodium hydroxide and alcohol into a reaction container, performing reflux condensation, heating the reaction container from the room temperature to a predetermined temperature, preserving the heat, and obtaining a product solution; and after the reaction is ended, cooling the product solution to the room temperature, removing the alcohol, drying, and obtaining the modified natural dye gardenia yellow. The method for dyeing the cationic modified cellulose fabric by adopting the modified natural dye gardenia yellow comprises the following steps: placing the modified cellulose fabric into dye liquor containing modified natural dye gardenia yellow, dyeing at the room temperature, heating to a predetermined temperature, preserving the heat, and dyeing; and after the dyeing is ended, taking out the cellulose fabric, washing with water, and drying to obtain a dye finished product. The technical scheme is simple in operation, low in cost, high in efficiency and capable of realizing the large-scale production.

Description

technical field [0001] The invention relates to a modified natural dye gardenia yellow and a method for dyeing cationic modified cellulose fiber fabrics, belonging to the technical field of textile dyeing and finishing. Background technique [0002] Since the middle ages of the 19th century, synthetic dyes have developed rapidly and are widely used in papermaking, textiles, medicine, food, cosmetics and tanning industries. However, synthetic dyes have a long dyeing process, many equipments, high energy consumption, and a large amount of waste water pollutes the environment, which seriously damages the balanced development of the ecology. Some synthetic dyes contain carcinogens, and with the consumption of the earth's petroleum resources, the problem of raw materials for synthetic dyes has also been exposed. Based on the above reasons, synthetic dyes can no longer meet people's requirements for healthy, eco-friendly green textiles. Therefore, environmentally friendly natura...

Claims

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Application Information

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IPC IPC(8): D06P1/34D06P3/60D06P5/22C09B61/00
CPCC09B61/00D06P1/34D06P3/60D06P5/22
Inventor 徐伟杰周立明张玉高陈可兵罗艳李梦雅
Owner GUANGDONG ESQUEL TEXTILES CO LTD
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