Method for performing dyeing by utilizing glucose generated by enzymolysis

A technology of glucose and enzymolysis, applied in the field of textile dyeing and finishing, can solve the problems of difficult sewage treatment, waste water, easy deliquescence, etc., and achieve the effect of shortening process time, reducing cost, and reducing water consumption.

Inactive Publication Date: 2013-07-24
BEIJING RICH TARGET LEATHER CLOTH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, sodium sulfide is easy to deliquesce in the air, and will be carbonized and deteriorated, continuously releasing poisonous hydrogen sulfide gas, which affects health. At the same time, the sewage containing sodium sulfide is difficult to handle, and the dyed cloth surface is prone to embrittlement for a long time.
Glucose has the same reducibility as sodium sulfide under alkaline conditions. In some dyeing processes, glucose is used instead of sodium sulfide, but in this method, the cost of glucose is high, and after desizing with amylase in the middle, it needs Discharging the desizing liquid and washing with water is also required, the process is cumbersome and wastes water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Add 300 liters of water into the dyeing vat, and add 30 grams of amylase at the rate of 10 grams of amylase per liter of water to obtain an amylase solution. Heat the solution to 60 ° C, and then place the gray cloth on the roller of the dyeing machine On, and through the solution in the dyeing vat, one end of the gray cloth is connected to the other roller, and the two rollers rotate back and forth to make the gray cloth pass through the amylase solution back and forth for 60 minutes.

[0015] Then add 150 grams of glucoamylase (glucoamylase) to the above solution at a rate of 0.5 grams per liter of water, keep the temperature at 60 ° C, and make the gray cloth continue to reciprocate through the solution for 60 minutes. Starch is completely broken down into glucose and disaccharides.

[0016] Add sodium hydroxide and sulfur black dye to the above solution. The mass ratio of sodium hydroxide to sulfur black is 0.5:1. Many, this point is well known to those skilled in ...

Embodiment 2

[0019] Add 300 liters of water into the dyeing vat, and add 27 grams of amylase at a ratio of 9 grams of amylase per liter of water to obtain an amylase solution. Heat the solution to 55 ° C, and then place the gray cloth on the roller of the dyeing machine On, and through the solution in the dyeing vat, one end of the gray cloth is connected to the other roller, and the two rollers rotate back and forth to make the gray cloth pass through the amylase solution back and forth for 70 minutes.

[0020] Then add 120 grams of glucoamylase (glucoamylase) to the above solution at a rate of 0.4 grams per liter of water, keep the temperature at 65 ° C, and make the gray cloth continue to reciprocate through the solution for 50 minutes. Starch is completely broken down into glucose and disaccharides.

[0021] Add sodium hydroxide and sulfur black dye to the above solution. The mass ratio of sodium hydroxide to sulfur black is 0.4:1. The quality of the added sulfur black depends on the d...

Embodiment 3

[0024] Add 300 liters of water to the dyeing vat, and add 33 grams of amylase at a ratio of 11 grams of amylase per liter of water to obtain an amylase solution. Heat the solution to 65 ° C, and then place the gray cloth on the roller of the dyeing machine On, and through the solution in the dyeing vat, one end of the gray cloth is connected to the other roller, and the two rollers rotate back and forth to make the gray cloth pass through the amylase solution back and forth for 50 minutes.

[0025] Then add 180 grams of glucoamylase to the above solution at a rate of 0.6 grams of glucoamylase (glucoamylase) per liter of water, keep the temperature at 55 ° C, and make the gray cloth continue to reciprocate through the solution for 70 minutes. Starch is completely broken down into glucose and disaccharides.

[0026] Add sodium hydroxide and sulfur black dye to the above solution. The mass ratio of sodium hydroxide to sulfur black is 0.6:1. The quality of the added sulfur black d...

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PUM

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Abstract

The invention discloses a method for performing dyeing by utilizing glucose generated by enzymolysis. Glucoamylase is used for further treating desizing fluid to finally convert starch into glucose and disaccharide, the glucose and the disaccharide are directly used as reducing agents, and the use of sodium sulfide or the re-addition of the glucose is avoided, so that raw materials are saved, the using amount of water is reduced, sewage treatment cost is lowered, steps are simplified, and process time consumption is reduced.

Description

technical field [0001] The invention relates to the field of textile dyeing and finishing, in particular to a method for dyeing by utilizing enzymatic hydrolysis to produce glucose. Background technique [0002] When dyeing with sulfur black dyes in the traditional textile dyeing and finishing process, it must be carried out under the action of sodium sulfide. Sulfur black dye is insoluble in water, and sodium sulfide is used as a reducing agent to reduce the dye to soluble leuco. It has an affinity to the fiber and dyes the fiber, and then restores its insoluble state after oxidation and color development and fixes on the fiber. However, sodium sulfide is easy to deliquesce in the air, and is carbonized and deteriorated, continuously releasing poisonous hydrogen sulfide gas, which affects human health. At the same time, sewage containing sodium sulfide is difficult to handle, and the dyed cloth surface is prone to embrittlement for a long time. Glucose has the same reduci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/30D06P1/44D06P1/673
Inventor 李继春谭磊林长山监雷司海燕王欣欣
Owner BEIJING RICH TARGET LEATHER CLOTH
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