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Method for dyeing phase-change temperature-adjustable viscose fiber with erythrosine

A technology of viscose fiber and dyeing method, which is applied in dyeing method, textiles and papermaking, etc. It can solve the problems of long conjugated double bond system, lack, and poor dyeability of erythrosin, so as to expand the application field and enhance the adsorption capacity , Improve the effect of dyeing percentage and color fastness

Inactive Publication Date: 2016-03-16
SHAOXING UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, no dyeing process using erythrosine for textiles has been developed. The reason is: due to the simple structure of erythrosine, the lack of a long conjugated double bond system in the molecule, the coplanarity of the molecular aromatic ring is not strong, The dyeing percentage of cellulose fiber is low, the dyeing property is poor, and it is difficult to obtain better dyeing performance
[0003] Therefore, how to solve the problem of poor dyeability of erythrosin on cellulose fibers, make full use of its excellent performance of safety and environmental protection, and explore its processing technology and method for textile dyeing are very urgent.

Method used

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  • Method for dyeing phase-change temperature-adjustable viscose fiber with erythrosine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: The influence of modifier LD-8202 dosage on dyeing performance.

[0021] A kind of dyeing method of erythrosine to phase change thermoregulation viscose fiber, method is as follows:

[0022] Step a. Pretreatment process: modifier LD-8202 dosage 0-8% owf, soda ash 4g / L, penetrant JFC 1g / L, liquor ratio 1:30, treatment at 80°C for 40min, washing with water, and drying.

[0023] Step b. Dyeing process: use 3% owf of erythrosine, pH = 7, liquor ratio 1:30, dye at room temperature, heat up to 80°C at 1°C / min, keep warm for 60 minutes, wash with water, and dry.

[0024] Using the above process, adjust the amount of modifier LD-8202, and test its influence on the dyeing performance, as shown in Table 1.

[0025] Table 1. Effect of modifier LD-8202 dosage on dyeing performance.

[0026] Modifier dosage (%owf)

[0027] It can be seen from Table 1 that within a certain range, as the amount of modifier LD-8202 increases, the K / S value increases and the co...

Embodiment 2

[0028] Embodiment 2: Effect of different erythrosine dosages on dyeing properties.

[0029] A kind of dyeing method of erythrosine to phase change thermoregulation viscose fiber, method is as follows:

[0030] Step a. Pretreatment process: modifier LD-8202 dosage 6% owf, soda ash 4g / L, penetrant JFC 1g / L, liquor ratio 1:30, treatment at 80°C for 40min, washing with water, and drying.

[0031] Step b. Dyeing process: the amount of erythrosine is 1-7% owf, pH=7, bath ratio 1:30, dyeing at room temperature, heating up to 80°C at 1°C / min, keeping warm for 60 minutes, washing with water, and drying.

[0032] Using the above process, adjust the amount of erythrosine, and test its influence on the dyeing performance, as shown in Table 2.

[0033] Table 2, the influence of the amount of erythrosine on the dyeing performance.

[0034] Dosage of erythrosine (%owf)

[0035] It can be seen from Table 2 that with the increase of the amount of erythrosine, the K / S value increase...

Embodiment 3

[0036] Embodiment 3: Effect of different dyeing temperatures on dyeing properties.

[0037] A kind of dyeing method of erythrosine to phase change thermoregulation viscose fiber, method is as follows:

[0038] Step a. Pretreatment process: modifier LD-8202 dosage 6% owf, soda ash 4g / L, penetrant JFC 1g / L, liquor ratio 1:30, treatment at 80°C for 40min, washing with water, and drying.

[0039] Step b. Dyeing process: erythrosine dosage 3% owf, pH=7, liquor ratio 1:30, dyeing at room temperature, heating up to 40, 60, 80, 100°C at 1°C / min, keeping warm for 60 minutes, washing with water ,drying.

[0040] Using the above process, adjust different temperatures, and test its influence on the dyeing performance, as shown in Table 3.

[0041] Table 3. Effect of dyeing temperature on dyeing performance.

[0042] Dyeing temperature (℃)

[0043] It can be seen from Table 3 that as the dyeing temperature increases, the K / S value further increases, and the K / S value reaches t...

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Abstract

The invention discloses a method for dyeing a phase-change temperature-adjustable viscose fiber with erythrosine. The method is characterized in that the phase-change temperature-adjustable viscose fiber is pretreated with a cationic etherifying agent so as to allow the surface of the treated phase-change temperature-adjustable viscose fiber to be positively charged, so pigment adsorption capability is substantially enhanced, electrostatic attraction to pigment negative ions is realized, and the number of dye sites for dye up-take of erythrosine on the phase-change temperature-adjustable viscose fiber is increased, so the dye up-take rate and color fastness are substantially improved. Therefore, the method realizes ecological environment-friendly high-color-yield dyeing of the phase-change temperature-adjustable viscose fiber with the erythrosine pigment.

Description

Technical field: [0001] The invention relates to a dyeing method of phase-change temperature-regulating viscose fiber, in particular to a dyeing method of erythrosine on phase-change temperature-regulating viscose fiber. Background technique: [0002] Erythrosine is a synthetic pigment with bright color, low cost, safety and environmental protection. It is mainly used as food additive and cosmetic colorant. At present, no dyeing process using erythrosine for textiles has been developed. The reason is: due to the simple structure of erythrosine, the lack of a long conjugated double bond system in the molecule, the coplanarity of the molecular aromatic ring is not strong, The dyeing percentage of cellulose fiber is low, the dyeing property is poor, and it is difficult to obtain better dyeing performance. [0003] Therefore, how to solve the problem of poor dyeability of erythrosin on cellulose fibers, make full use of its excellent performance of safety and environmental prot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/40D06P1/44D06P3/60
CPCD06P1/40D06P1/445D06P3/6008
Inventor 刘艳春金美菊白刚
Owner SHAOXING UNIVERSITY
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