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Modified cellulose fibers

A cellulose fiber modification technology, applied in the field of modified cellulose fiber and cellulose fiber, can solve the problems of high chroma of dyeing raffinate, large amount of alkali consumption, and difficult treatment of waste water, so as to avoid dye flocculation and modification Fully and evenly modified effect

Pending Publication Date: 2015-02-18
HMEI THREAD CO LTD OF YINBIN SICHUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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Examples

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Embodiment 1

[0062] Modified cellulose fibers:

[0063] A modified cellulose fiber used for salt-free and low-alkali dyeing, the modified cellulose fiber is made of cellulose fiber through modifier A and modifier B two quaternary ammonium salt cationic modifiers as cationic Modifier, modifying treatment, when the obtained pH value is 6.5-8.5, the Zeta electrode potential value is -10 ~ 30mV modified cellulose fiber; the modifier A is a small molecule quaternary ammonium salt cation modified agent, and the modifier B is a polymer quaternary ammonium salt cationic modifier.

[0064] The above is the modified cellulose fiber of the present invention. Due to the small molecular weight of the small molecular quaternary ammonium salt cationic modifier, 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, mainly adsorbed on the surface of the fiber, and it ...

Embodiment 2

[0066] Modified cellulose fibers:

[0067] A modified cellulose fiber, wherein the modified cellulose fiber is modified by using two quaternary ammonium salt cationic modifiers, modifier A and modifier B, as cationic modifiers. , when the obtained pH value was 6.5, the Zeta electrode potential value was 30mV modified cellulose fibers; the modifier A was a small molecule quaternary ammonium salt cationic modifier, and the modifier B was a macromolecule Quaternary ammonium cationic modifier.

Embodiment 3

[0069] Modified cellulose fibers:

[0070] A modified cellulose fiber, wherein the modified cellulose fiber is modified by using two quaternary ammonium salt cationic modifiers, modifier A and modifier B, as cationic modifiers. , when the obtained pH value was 8.5, the Zeta electrode potential value was the modified cellulose fiber of -10mV; the described modifier A was a small molecule quaternary ammonium salt cationic modifier, and the described modifier B was a high Molecular quaternary ammonium salt cationic modifier.

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Abstract

The invention relates to modified cellulose fibers, belonging to the technical field of textile dyeing. The modified cellulose fibers are obtained by carrying out modification treatment on cellulose fibers with two kinds of quaternary ammonium salt cationic modifiers, namely modifiers A and modifiers B, as cationic modifiers and have Zeta electrode potential values of minus 10-30mV when the pH values are 6.5-8.5, wherein the modifiers A are low molecular quaternary ammonium salt cationic modifiers; the modifiers B are high molecular quaternary ammonium salt cationic modifiers. The modified cellulose fibers have the beneficial technical effects that the two kinds of specific modifiers are adopted and the synergistic effects of the modifiers are given play to, so that the modified cellulose fibers achieve salt-free low-alkali dyeing in subsequent dyeing, have the effects of reducing pollution, saving the cost, simplifying the process and reducing the difficulty, have good modification and subsequent dyeing effects, and are suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a cellulose fiber, more specifically, the invention relates to a modified cellulose fiber, which 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. It is a very difficult pro...

Claims

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Application Information

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IPC IPC(8): D06P1/66D06P1/52D06P1/48D06P3/60D06P5/22
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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