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Acidic dye dyeing method of modified viscose fibers

A technology of acid dyes and viscose fibers, which can be used in dyeing methods, textiles and papermaking, and can solve problems such as unsatisfactory dyeing effects

Inactive Publication Date: 2016-03-09
唐晓琦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dyeing effect of the current acid dye dyeing process is not ideal, based on this, this situation needs to be solved urgently

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of acid dye dyeing method of modified viscose fiber, the specific operation steps of this method are as follows:

[0030] (1) Modify the viscose fiber: soak the viscose fiber successively in acetic acid and sodium bicarbonate solution for pretreatment, take it out after a certain period of time, and rinse it with distilled water several times; then at low temperature, the pretreated The fiber is modified with a cationic modifier for a certain period of time, and dried: the modified fiber is taken out, washed with distilled water and dried at low temperature; the cationic modifier is styrene, butyl acrylate, p-vinylbenzyl tri The copolymer synthesized by methyl ammonium chloride, the dosage is 1g / L, the modification temperature is 60°C, the modification time is 60min, and the bath ratio is 1:30;

[0031] (2) Dyeing of viscose fiber after modification: first heat the water temperature to 25°C in the dyeing vat, and add 1 g / L of chelating agent at a uniform speed wi...

Embodiment 2

[0047] A kind of acid dye dyeing method of modified viscose fiber, the specific operation steps of this method are as follows:

[0048] (1) Modify the viscose fiber: soak the viscose fiber successively in acetic acid and sodium bicarbonate solution for pretreatment, take it out after a certain period of time, and rinse it with distilled water several times; then at low temperature, the pretreated The fiber is modified with a cationic modifier for a certain period of time, and dried: the modified fiber is taken out, washed with distilled water and dried at low temperature; the cationic modifier is styrene, butyl acrylate, p-vinylbenzyl tri The copolymer synthesized by methyl ammonium chloride, the dosage is 3g / L, the modification temperature is 70°C, the modification time is 120min, and the bath ratio is 1:50;

[0049] (2) Dyeing of viscose fiber after modification: heat the water temperature to 30°C in the dyeing vat, and add chelating agent 3g / L at a uniform speed within 5 mi...

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Abstract

The invention relates to an acidic dye dyeing method of modified viscose fibers. The method is characterized in that viscose fibers are modified, and the modified viscous fibers are dyed by a dyeing accelerant without adding electrolyte salts, and the dyeing accelerant is prepared by adding specific components. The dyeing method can improve the uniform diffusivity, the stainability and the light resistance of a dye in the viscose fibers, and increases the dimension stability and the tensile strength of the modified viscose fibers to a certain degree.

Description

technical field [0001] The invention relates to the technical field of acid dyes, in particular to an acid dye dyeing method for modified viscose fibers. Background technique [0002] The dyeing characteristics of viscose fiber are basically the same as that of cotton fiber. At present, the dyeing of natural or regenerated cellulose fibers requires a supply of alkaline agents and electrolytes in order to obtain satisfactory color fixation with reactive dyes. However, it is precisely these necessary additions that are ecologically unacceptable. Therefore, the future will increasingly belong to regenerated cellulose fibers which, without additional processing steps, have been previously converted and modified to have a high affinity for dyes, that is to say dyeable without salt and alkali. Fibers modified in this way are chemically similar to animal fibers such as wool or silk, and can be dyed with anionic dyes under neutral conditions without the addition of salt or alkali....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/39D06P1/607D06P1/651D06P1/645D06P1/653D06P1/62D06P1/673D06P1/52D06P3/60D06P5/02
CPCD06P1/39D06P1/525D06P1/607D06P1/627D06P1/645D06P1/65106D06P1/65118D06P1/6533D06P1/673D06P1/67341D06P1/6735D06P1/67375D06P3/6008D06P5/02
Inventor 唐晓琦
Owner 唐晓琦
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