Ecological low-salt dyeing and finishing agent for reactive dyes and preparation method and applications thereof

A technology of reactive dyes and finishing agents, applied in the field of dyeing, can solve problems such as water source pollution and achieve the effect of improving the utilization rate

Active Publication Date: 2013-03-20
南通曙光染织有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the dyeing process is over, these inorganic salts are discha

Method used

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  • Ecological low-salt dyeing and finishing agent for reactive dyes and preparation method and applications thereof
  • Ecological low-salt dyeing and finishing agent for reactive dyes and preparation method and applications thereof
  • Ecological low-salt dyeing and finishing agent for reactive dyes and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: a kind of reactive dye ecological low-salt dyeing finishing agent comprises the following components: crosslinked cationic modifier A and branched cationic modifier B, wherein the structural formula of crosslinked cationic modifier A is

[0028]

[0029] In the formula m=4;

[0030] The structural formula of the branched cationic modifier B is

[0031]

[0032] The weight ratio of the cross-linking cationic modifier A to the branched cationic modifier B is 50:50.

[0033] The preparation method of the above-mentioned reactive dye ecological low-salt dyeing and finishing agent, the method comprises the following steps:

[0034] 1) Synthesis of cross-linking cationic modifier A: Add dimethylamine dropwise to epichlorohydrin under stirring at a constant temperature of 30°C, wherein the molar ratio of epichlorohydrin: dimethylamine is 1.5 : 1, after dropwise addition, add polyamine cross-linking agent again, control cross-linking agent to account for 3...

Embodiment 2

[0047] Embodiment 2: basically the same as Example 1, the difference is: the weight ratio of cross-linked cationic modifier A and branched cationic modifier B is 30:50; the weight ratio of cross-linked cationic modifier A In the structural formula, m=6.

Embodiment 3： and Embodiment 1，：A and B40∶50；Am＝8。 Embodiment 4

[0048]Embodiment 3: basically identical with embodiment 1, difference is: the weight ratio of cross-linking type cationic modifier A and branched chain type cationic modifier B is 40: 50; In the structural formula, m=8. Embodiment 4: basically identical with embodiment 1, difference is the preparation method of above-mentioned reactive dye ecological low-salt dyeing and finishing agent, and this method comprises the steps:

[0049] 1) Synthesis of cross-linking cationic modifier A: Add dimethylamine dropwise to epichlorohydrin under stirring at a constant temperature of 30°C, wherein the molar ratio of epichlorohydrin: dimethylamine is 1 : 2, after dropwise addition, add polyamine cross-linking agent again, control cross-linking agent to account for 3% (mole number ratio) of reaction monomer total amount; Continue to stir, and slowly rise to 70 ℃, constant temperature 70 ℃ React for 5h to obtain the cross-linked cationic modifier A;

[0050] 2) Synthesis of branched cationic...

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Abstract

The invention discloses an ecological low-salt dyeing and finishing agent for reactive dyes, which comprises a crosslinking cationic modifier A and a branched cationic modifier B, wherein the weight ratio of the crosslinking cationic modifier A to the branched cationic modifier B is (30-50): 50. The ecological low-salt dyeing and finishing agent for reactive dyes disclosed by the invention has the advantages that in the process of treating cotton fibers by using the crosslinking cationic modifier and the branched cationic modifier, the inner portions and surfaces of the fibers can be modified through cationization, therefore, the utilization rate of reactive dyes can be improved, and the dye-uptake rate and fixation rate of cotton fabrics are significantly higher than those in conventional dyeing; salt-free low-alkali dyeing even salt-free alkali-free dyeing can be achieved, and dyeing wastewater can be recycled for secondary utilization; and the color fastness to washing and the color fastness to rubbing are consistent with those of conventional cotton fabrics.

Description

technical field [0001] The invention relates to the field of dyeing, in particular to an ecological low-salt dyeing and finishing agent for pure cotton yarn reactive dyes, a preparation method and application thereof. Background technique [0002] Reactive dyes are famous for their simple molecular structure, bright color, complete color spectrum, convenient use, and low cost. Since synthetic dyes were introduced to the market in 1956, after half a century of development, reactive dyes have become the second largest category of dyes in my country after disperse dyes, and have become the most widely used dyes on cotton fibers. However, the outstanding problem is that the exhaustion rate and color fixation rate are low. For example, the color fixation rate of reactive dyes with single reactive groups is only 50% to 60%. But most of them are around 80% in actual application. At present, a large amount of electrolyte is added during the dyeing process to reduce the Zeta potent...

Claims

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Application Information

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IPC IPC(8): D06M15/61D06M13/463D06P3/66D06M101/06
Inventor 管永华王海峰朱国华唐菊金鹏
Owner 南通曙光染织有限公司
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