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Modified process for cellulose fiber

A cellulose fiber modification technology, which is applied in the treatment process of cellulose fiber and the field of modification process of 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 The effect of dye flocculation, uniform modification and sufficient modification

Inactive Publication Date: 2015-03-25
SOUTH CHINA UNIV OF TECH +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 modification process, as well as the follow-up salt-free and low-alkali dyeing process, cannot be applied to large-scale industrial production

Method used

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  • Modified process for cellulose fiber
  • Modified process for cellulose fiber
  • Modified process for cellulose fiber

Examples

Experimental program
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Effect test

Embodiment 1

[0060] Modification process of cellulose fiber:

[0061] Put the cellulose fiber into the container, add water to the container, and then modify the cellulose fiber with two cationic modifiers, the small molecule quaternary ammonium salt cationic modifier and the high molecular quaternary ammonium salt cationic modifier , modified cellulose fibers are obtained after the modification treatment is completed; the small molecule quaternary ammonium salt cationic modifier is the epichlorohydrin parent derivative of the epoxy quaternary ammonium salt, and the high molecular quaternary ammonium salt cationic modified The main chain type polyepichlorohydrin dimethylamine.

[0062] The above-mentioned process is the cellulose fiber modification process of the present invention, and the modified cellulose fiber with a nitrogen content of 0.16-0.38% is obtained. When the pH value of the fiber is 6.5-8.5, the Zeta electrode potential value is 5-26mV. Due to the small molecular weight of ...

Embodiment 2

[0064] Modification process of cellulose fiber:

[0065] Put the cellulose fiber into the container, add water to the container, and then modify the cellulose fiber with two cationic modifiers, the small molecule quaternary ammonium salt cationic modifier and the high molecular quaternary ammonium salt cationic modifier , modified cellulose fibers are obtained after the modification treatment is completed; the small molecule quaternary ammonium salt cationic modifier is the epichlorohydrin parent derivative of the epoxy quaternary ammonium salt, and the high molecular quaternary ammonium salt cationic modified The main chain type polyepichlorohydrin dimethylamine.

[0066] The cellulose fibers are selected from viscose filaments, viscose staple fibers, modal, tencel, cotton fibers, yarns and fabrics made from the aforementioned cellulose fibers.

[0067] The modification process of the present invention is applicable to all kinds of cellulose fibers, and also includes twisted...

Embodiment 3

[0069] The small molecule quaternary ammonium salt cationic modifier of the present invention is the epichlorohydrin parent derivative of epoxy quaternary ammonium salt;

[0070] The polymer quaternary ammonium salt cationic modifier of the present invention is a main chain type polyepichlorohydrin dimethylamine.

[0071] Epichlorohydrin parent derivatives of epoxy quaternary ammonium salts:

[0072]

[0073] Main chain polyepichlorohydrin dimethylamine:

[0074]

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Abstract

The invention relates to a modified process for cellulose fiber, and belongs to the technical field of textile dyeing. The modified process comprises the following steps: putting the cellulose fiber into a container, adding water into the container, and then conducting modified treatment on the cellulose fiber with two cation modifying agents of a micromolecule quaternary ammonium salt cation modifying agent and a macromolecule quaternary ammonium salt cation modifying agent, so as to obtain the modified cellulose fiber after the modified treatment, wherein the micromolecule quaternary ammonium salt cation modifying agent is epichlorohydrin parent derivant of epoxy quaternary ammonium salt, and the macromolecule quaternary ammonium salt cation modifying agent is main chain-type epicholorohydrin-dimethylamine polymer. The two specific modifying agents are adopted and play the function of a synergistic effect, so that salt-free low-alkaline dyeing of the modified cellulose fiber in the follow-up dyeing is realized, the pollution as well as the cost is reduced, the process is simplified, the difficulty is reduced, the modified and follow-up dyeing effects are good, and industrialized mass production is facilitated.

Description

Technical field [0001] The invention involves the treatment process of cellulose fiber. More specifically, the invention involves the modified process of cellulose fiber, which is the field of textile dyeing technology. Background technique [0002] Traditional cellulose fiber dyeing process is generally about 40-70%, with a low upper dyeing rate and a large floating color. In order to overcome the obstacles during the dyeing process, a large amount of inorganic salt must be added to the dye solution to improve the upper dyeing dyeRate; in order to achieve the purpose of fixing color, the hydroxyl group on the cellulose needs to be ionized under strong alkaline conditions. Therefore, a large amount of pure alkali must be added to the dyeing solution in the later stages of dyeing.The treatment of inorganic salts and alkali has always been a problem that plagues the industry. A large number of inorganic salts that are neither recovered nor degraded into rivers and lakes are severel...

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 刘维锦廖周荣段太刚贾卫平何大雄汤伟张海刘志军郑雪梅苏晓樱
Owner SOUTH CHINA UNIV OF TECH
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