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Cationic modified cellulose fibers

A technology of cationic modification and cellulose fiber, which is applied in the field of modified cellulose fiber and cationic modified cellulose fiber, which can solve the problems of high chroma of dyeing residual liquid, large amount of alkali consumption, difficult wastewater treatment, etc., and achieve Avoid dye flocculation, uniform dyeing and sufficient modification

Pending Publication Date: 2015-02-18
HMEI THREAD CO LTD OF YINBIN SICHUAN
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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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  • Cationic modified cellulose fibers
  • Cationic modified cellulose fibers

Examples

Experimental program
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Effect test

Embodiment 1

[0061] Modified cellulose fibers:

[0062] Modified cellulose fiber, the modified cellulose fiber is modified by the cellulose fiber through a small molecular quaternary ammonium salt cationic modifier and a high molecular quaternary ammonium salt cationic modifier as a cationic modifier, When the obtained pH value is 6.5-8.5, the Zeta electrode potential value is 10-30mV modified cellulose fiber; the described small molecule quaternary ammonium salt cationic modifier is epoxy quaternary ammonium salt compound, and the described macromolecule The quaternary ammonium salt cationic modifier is branched polyepichlorohydrin dimethylamine.

[0063] 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...

Embodiment 2

[0065] Modified cellulose fibers:

[0066] Modified cellulose fiber, the modified cellulose fiber is modified by the cellulose fiber through a small molecular quaternary ammonium salt cationic modifier and a high molecular quaternary ammonium salt cationic modifier as a cationic modifier, When the obtained pH value was 6.5, the Zeta electrode potential value was 30mV modified cellulose fiber; the described small molecule quaternary ammonium salt cation modifier was epoxy quaternary ammonium salt compound, and the described polymer quaternary ammonium salt cation The modifier is branched polyepichlorohydrin dimethylamine.

Embodiment 3

[0068] Modified cellulose fibers:

[0069] Modified cellulose fiber, the modified cellulose fiber is modified by the cellulose fiber through a small molecular quaternary ammonium salt cationic modifier and a high molecular quaternary ammonium salt cationic modifier as a cationic modifier, When the obtained pH value was 8.5, the Zeta electrode potential value was 10mV modified cellulose fiber; the described small molecule quaternary ammonium salt cation modifier was epoxy quaternary ammonium compound, and the described polymer quaternary ammonium salt cation The modifier is branched polyepichlorohydrin dimethylamine.

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Abstract

The invention relates to cationic 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 low molecular quaternary ammonium salt cationic modifiers and a high molecular quaternary ammonium salt cationic modifier as cationic modifiers and have Zeta electrode potential values of 10-30mV when the pH values are 6.5-8.5, wherein the low molecular quaternary ammonium salt cationic modifiers are epoxy quaternary ammonium salt compounds; the high molecular quaternary ammonium salt cationic modifier is branched polyepichlorohydrin dimethylamine. The cationic 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 modified cellulose fiber, more specifically, the invention relates to a cationized 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/66D06P1/52D06P3/60D06P5/22
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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