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Modified cellulosic fiber

A cellulose fiber and modification technology, applied in the field of cellulose fiber and modified cellulose fiber, can solve the problems of not being suitable for large-scale production, high chroma of dyeing residue, difficult treatment of waste water, etc., and achieves high success rate, Good cationization effect and the effect of reducing the amount of dyes

Pending Publication Date: 2015-03-25
HMEI THREAD CO LTD OF YINBIN SICHUAN +1
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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

[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 5-26mV modified cellulose fiber; the described small molecule quaternary ammonium salt cationic modifier is the epichlorohydrin parent derivative of epoxy quaternary ammonium salt , the polymer quaternary ammonium salt cationic modifier is mainly chain-type 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 cation...

Embodiment 2

[0065] Modified cellulose fibers:

[0066] Modified cellulose fiber, characterized in that: the modified cellulose fiber is made of cellulose fiber through a small molecular quaternary ammonium salt cationic modifier and a high molecular weight quaternary ammonium salt cationic modifier as a cationic modifier. Modification treatment, when the obtained pH value is 6.5, the modified cellulose fiber whose Zeta electrode potential value is 26mV; the described small molecule quaternary ammonium salt cationic modifier is the epichlorohydrin parent derivative of epoxy quaternary ammonium salt , the polymer quaternary ammonium salt cationic modifier is mainly chain-type polyepichlorohydrin dimethylamine.

Embodiment 3

[0068] Modified cellulose fibers:

[0069] Modified cellulose fiber, characterized in that: the modified cellulose fiber is made of cellulose fiber through a small molecular quaternary ammonium salt cationic modifier and a high molecular weight quaternary ammonium salt cationic modifier as a cationic modifier. Modification treatment, when the obtained pH value is 8.5, the modified cellulose fiber whose Zeta electrode potential value is 5mV; the described small molecule quaternary ammonium salt cationic modifier is the epichlorohydrin parent derivative of epoxy quaternary ammonium salt , the polymer quaternary ammonium salt cationic modifier is mainly chain-type polyepichlorohydrin dimethylamine.

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Abstract

The invention relates to modified cellulosic fiber, and belongs to the technical field of textile dyeing. The modified cellulosic fiber is obtained in the way that cellulosic fiber is subjected to modification treatment by taking a micromolecular quaternary ammonium salt cationic modifier and a macromolecular quaternary ammonium salt cationic modifier as cationic modifiers to obtain the modified cellulosic fiber with the pH value of 6.5-8.5 and the Zeta electrode potential value of 5-26 mV, wherein the micromolecular quaternary ammonium salt cationic modifier is epichlorohydrin parent derivative of epoxy quaternary ammonium salt, and the macromolecular quaternary ammonium salt cationic modifier is the main-chained epicholorohydrin-dimethylamine polymer. According to the invention, the two specific modifiers are adopted, and the role of the synergistic effect of the two specific modifiers is played to enable the modified cellulosic fiber to realize salt-free low-alkaline dyeing in the follow-up dyeing, so that the pollution is reduced, the cost is saved, the process is simplified, the difficulty is reduced, the modification and the follow-up dyeing effect are excellent, and the modified cellulosic fiber is suitable for industrial large-scale production.

Description

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

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 HMEI THREAD CO LTD OF YINBIN SICHUAN
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