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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 modified cellulose fiber, which can solve the problems of high chromaticity of dyeing raffinate, large amount of alkali consumption, difficult treatment of wastewater, etc. problems, to achieve the effect of avoiding dye flocculation, uniform dyeing, and sufficient modification

Pending Publication Date: 2015-02-18
YIBIN SPARK NEW FIBER CO LTD
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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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  • Cationic modified cellulose fibers
  • Cationic modified cellulose fibers

Examples

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Effect test

Embodiment 1

[0060] Modified cellulose fiber:

[0061] Cationic modified modified cellulose fiber, said modified cellulose fiber is made of cellulose fiber through small molecule quaternary ammonium salt cationic modifier and polymer quaternary ammonium salt cationic modifier as cationic modifier, After modification, the obtained pH value is 6.5-8.5, and the Zeta electrode potential value is -8~5mV modified cellulose fiber; the small molecule quaternary ammonium salt cationic modifier is 3-acrylamide-2 -Hydroxypropyl trimethylammonium chloride, the polymer quaternary ammonium salt cationic modifier is a cationic polyacrylamide compound.

[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...

Embodiment 2

[0064] Modified cellulose fiber:

[0065] Cationic modified modified cellulose fiber, said modified cellulose fiber is made of cellulose fiber through small molecule quaternary ammonium salt cationic modifier and polymer quaternary ammonium salt cationic modifier as cationic modifier, After modification, the obtained modified cellulose fiber with a Zeta electrode potential value of 5mV when the pH value is 6.5; the small-molecule quaternary ammonium salt cationic modifier is 3-acrylamide-2-hydroxypropyl three Methyl ammonium chloride, the polymer quaternary ammonium salt cationic modifier is a cationic polyacrylamide compound.

Embodiment 3

[0067] Modified cellulose fiber:

[0068] Cationic modified modified cellulose fiber, said modified cellulose fiber is made of cellulose fiber through small molecule quaternary ammonium salt cationic modifier and polymer quaternary ammonium salt cationic modifier as cationic modifier, After modification, the obtained pH value is 8.5, the Zeta electrode potential value is -8mV modified cellulose fiber; the small molecule quaternary ammonium salt cationic modifier is 3-acrylamide-2-hydroxypropyl Trimethylammonium chloride, the polymer quaternary ammonium salt cationic modifier is a cationic polyacrylamide compound.

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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 a low molecular quaternary ammonium salt cationic modifier and high molecular quaternary ammonium salt cationic modifiers as cationic modifiers, and have Zeta electrode potential values of minus 8-5mV when the pH values are 6.5-8.5, wherein the low molecular quaternary ammonium salt cationic modifier is 3-acrylamide-2-hydroxypropyl trimethylammonium chloride; the high molecular quaternary ammonium salt cationic modifiers are cationic polyacrylamide compounds. 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 modified cellulose fibers, more specifically, the invention relates to cationic modified modified cellulose fibers, belonging 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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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 YIBIN SPARK NEW FIBER CO LTD
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