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Modified cellulosic fiber obtained through modification of modifier

A technology of cellulose fibers and modifiers, which is applied in the field of textile dyeing, can solve the problems of inapplicability to large-scale production, high chroma of dyeing raffinate, difficult wastewater treatment, etc. The effect of dosage reduction

Pending Publication Date: 2015-03-25
HMEI THREAD CO LTD OF YINBIN SICHUAN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The present invention aims to solve the following problems in the process of dyeing the cellulose fibers after modification in order to reduce the consumption of dyes, inorganic salts and alkali in the prior art: The degree of pollution is high, and the discharged wastewater is difficult to treat, causing pollution; and the existing modified cellulose fiber is used for the process of dyeing without salt and low alkali modification, which cannot be applied to large-scale industrial production

Method used

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  • Modified cellulosic fiber obtained through modification of modifier
  • Modified cellulosic fiber obtained through modification of modifier
  • Modified cellulosic fiber obtained through modification of modifier

Examples

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Comparison scheme
Effect test

Embodiment 1

[0060] Modified cellulose fiber:

[0061] The modified cellulose fiber is modified by cellulose fiber through a small molecule quaternary ammonium salt cationic modifier and a polymer quaternary ammonium salt cationic modifier as a cationic modifier, and the pH value obtained is 6.5 -8.5, the modified cellulose fiber with a Zeta electrode potential value of -2-20mV; the small molecule quaternary ammonium salt cation modifier is an epoxy quaternary ammonium salt compound, and the polymer quaternary ammonium salt cation modification The sex agent is cationic starch.

[0062] The above is the modified cellulose fiber of the present invention. Because the small molecular quaternary ammonium salt cationic modifier has a small molecular weight, it can not only be adsorbed on the surface of the fiber but also diffuse into the fiber, while the high molecular weight quaternary ammonium salt cationic modifier has a large molecular weight, which is mainly adsorbed on the surface of the fiber...

Embodiment 2

[0064] Modified cellulose fiber:

[0065] The modified cellulose fiber is modified by cellulose fiber through a small molecule quaternary ammonium salt cationic modifier and a polymer quaternary ammonium salt cationic modifier as a cationic modifier, and the pH value obtained is 6.5 When the Zeta electrode potential value is 20mV modified cellulose fiber; the small molecule quaternary ammonium salt cationic modifier is an epoxy quaternary ammonium salt compound, and the polymer quaternary ammonium salt cationic modifier is cationic starch .

Embodiment 3

[0067] Modified cellulose fiber:

[0068] The modified cellulose fiber is modified by cellulose fiber through a small molecule quaternary ammonium salt cationic modifier and a polymer quaternary ammonium salt cationic modifier as a cationic modifier, and the pH value obtained is 8.5 When the Zeta electrode potential value is -2mV modified cellulose fiber; the small molecule quaternary ammonium salt cation modifier is epoxy quaternary ammonium salt compound, and the polymer quaternary ammonium salt cation modifier is cationic starch.

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Abstract

The invention relates to modified cellulosic fiber obtained through modification of a modifier and belongs to the technical field of dope dyeing. The modified cellulosic fiber is prepared from cellulosic fiber through modified treatment by a micromolecule quaternary ammonium salt positive ion modifier and a macromolecule quaternary ammonium salt positive ion modifier as positive ion modifiers; the modified cellulosic fiber has the pH value of 6.5-8.5 and the Zeta electrode potential value of -2-20 mV; the micromolecule quaternary ammonium salt positive ion modifier is an epoxy quaternary ammonium salt compound and the macromolecule quaternary ammonium salt positive ion modifier is cationic starch. According to the invention, the two specific modifiers are adopted to play the synergistic effect, so that salt-free low-alkaline dyeing of the modified cellulosic fiber in the subsequent dyeing can be realized, the pollution is reduced, the cost is decreased, the technology is simplified, the difficulty is lowered, the modified and subsequent dyeing effect is excellent, and the modified cellulosic fiber is applicable to industrialized and large-scale production.

Description

technical field [0001] The invention relates to modified cellulose fiber, more specifically, the invention relates to modified cellulose fiber modified by a modifier, and belongs to the technical field of textile dyeing. Background technique [0002] The dye uptake rate of traditional cellulose fiber dyeing process is generally around 40-70%. The dye uptake rate is low and there are many floating colors. In order to achieve the purpose of color fixation, the hydroxyl groups on the cellulose need to be ionized under strong alkaline conditions, so a large amount of soda ash must be added to the dyeing solution in the later stage of dyeing. The treatment of inorganic salts and alkalis has always been a problem that plagues the industry. A large amount of inorganic salts that are neither recyclable nor degradable are discharged into rivers and lakes, seriously polluting water quality. Due to the high permeability of salt, the surrounding soil is salinized and becomes alkaline. ...

Claims

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Application Information

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IPC IPC(8): D06P1/66D06P1/48D06P3/60D06P5/22
Inventor 廖周荣段太刚贾卫平何大雄汤伟黄金洪张海刘志军
Owner HMEI THREAD CO LTD OF YINBIN SICHUAN
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