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Manufacturing technology of formaldehydeless colour fixing agent

A technology of manufacturing process and color fixing agent, which is applied in dyeing, textile and paper making, and can solve problems such as unsatisfactory color fixing performance and effect

Inactive Publication Date: 2004-10-06
JINSHENG FINE CHEM SANSHUI CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned color fixing agent does not contain formaldehyde and solves the environmental protection problem, its color fixing performance and effect are not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] Raw materials used in the present invention: diethylenetriamine AE, epichlorohydrin EP;

[0014] Experimental equipment: a four-neck flask equipped with an electric mixer, a thermometer, a condenser, and a dropping funnel, and an electric heating insulation pot with automatic temperature control;

[0015] The synthesis process is as follows: add a certain amount of water and diethylenetriamine AE into the reaction vessel, stir for a period of time, then add epichlorohydrin EP dropwise, keep the temperature below 50°C, and heat up to 60°C after the dropwise addition , heat-retaining reaction for one hour, then heating to 80° C., and heat-retaining reaction for 30 minutes. Take a sample to test the viscosity of the product, cool to room temperature after passing the test, and then discharge to get the finished product. The product is a yellow-green transparent liquid, easily soluble in water, with a pH value of 5-6.

[0016] During the synthesis process, the molar ratio...

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Abstract

A color fixating agent without formaldehyde is prepared from diethylenetriamine (AE) and epoxy chloropropane (EP) through adding water and AE to reactor, stirring, dropping EP at temp lower than 50 deg.C, heating to 55-65 deg.C, holding the temp for 0.5-2 hr, heating to 75-90 deg.C, holding the temp for 20-40 min while reacting, measuring viscosity and cooling.

Description

technical field [0001] The invention relates to a color-fixing agent for dyeing with reactive dyes. Background technique [0002] At present, the dyeing of cotton fabrics is mainly based on the dyeing of reactive dyes. Since the molecular structure of reactive dyes contains hydrophilic groups such as sulfonic acid groups and carboxylic acid groups, when dyeing dark colors, it often occurs that the concentration is too high and it is fixed. The amount of dye is limited, so that there is a large amount of unfixed dye on the dyed cotton fabric, resulting in unqualified color fastness and poor wet fastness. It is necessary to use a color fixing agent to improve the color fastness of the dyed cotton fabric. In the past, the color fixing agent containing formaldehyde was generally used to improve the color fastness, because of its excellent color fixing performance and economical benefits, it is very popular among manufacturers. But in recent years, people's awareness of environm...

Claims

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Application Information

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IPC IPC(8): D06P1/642
Inventor 黄彩霞
Owner JINSHENG FINE CHEM SANSHUI CITY
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