Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Modification process for cellulosic fibers

A cellulose fiber and modification technology, which is applied in the field of textile dyeing, can solve the problems of not being suitable for large-scale production, high chromaticity of dyeing residue, and difficult to treat wastewater, and achieves high production efficiency, good cationization effect, and dye dosage. reduced effect

Inactive Publication Date: 2015-03-25
SOUTH CHINA UNIV OF TECH +1
View PDF5 Cites 6 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Modification process for cellulosic fibers
  • Modification process for cellulosic fibers
  • Modification process for cellulosic fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Modification process of cellulose fiber:

[0063] Put the cellulose fiber into the container, add water to the container, and then use two kinds of quaternary ammonium salt cationic modifiers, modifier A and modifier B, to modify the cellulose fiber, and obtain Modified cellulose fiber: the modifier A is a small-molecular quaternary ammonium salt cationic modifier, and the modifier B is a high-molecular quaternary ammonium salt cationic modifier.

[0064] The above-mentioned process is the cellulose fiber modification process of the present invention, and when the pH value is 6.5-8.5, the Zeta electrode potential value is -10-30mV to obtain the modified cellulose fiber. 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 ads...

Embodiment 2

[0066] Modification process of cellulose fiber:

[0067] Put the cellulose fiber into the container, add water to the container, and then use two kinds of quaternary ammonium salt cationic modifiers, modifier A and modifier B, to modify the cellulose fiber, and obtain Modified cellulose fiber: the modifier A is a small-molecular quaternary ammonium salt cationic modifier, and the modifier B is a high-molecular quaternary ammonium salt cationic modifier.

[0068] The cellulose fibers are selected from viscose filaments, viscose staple fibers, modal, tencel, cotton fibers, yarns and fabrics made from the aforementioned cellulose fibers.

[0069] The modification process of the present invention is applicable to all kinds of cellulose fibers, and also includes twisted yarns (hank form or cheese form) of these cellulose fibers, or fabrics (cloths, etc.) made of these cellulose fibers.

Embodiment 3

[0071] Modification process of cellulose fiber:

[0072] Put the cellulose fiber into the container, add water to the container, and then use two kinds of quaternary ammonium salt cationic modifiers, modifier A and modifier B, to modify the cellulose fiber, and obtain Modified cellulose fiber: the modifier A is a small-molecular quaternary ammonium salt cationic modifier, and the modifier B is a high-molecular quaternary ammonium salt cationic modifier.

[0073] Among them, the small molecule quaternary ammonium salt cationic modifier is selected from epoxy quaternary ammonium salt compound, epichlorohydrin parent derivative of epoxy quaternary ammonium salt, 3-acrylamide-2-hydroxypropyl trimethyl ammonium chloride, aza Cyclobutane chloride or chlorotriazine type quaternary ammonium compounds.

[0074] Among them, the polymer quaternary ammonium salt cationic modifier is selected from polyepichlorohydrin dimethylamine, polyamide polyamine epichlorohydrin, cationic polyacrylam...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
electric potential / voltageaaaaaaaaaa
Login to View More

Abstract

The invention relates to a modification process for cellulosic fibers and belongs to the technical field of textile dyeing. The modification process for the cellulosic fibers, which is disclosed by the invention, comprises the following steps: placing the cellulosic fibers into a container; adding water into the container; then carrying out modification treatment on the cellulosic fibers by a small molecule quaternary ammonium salt cationic modifier and a macromolecule quaternary ammonium salt cationic modifier; and after modification treatment, obtaining the modified cellulosic fibers. According to the modification process, two specific modifiers are adopted and the synergistic effect of the two modifiers is used, so that salt-free low-alkali dyeing of the modified cellulosic fibers is realized in the subsequent dyeing process, pollution is reduced and the cost is reduced; moreover, the process is simplified; difficulty is reduced; modifying and subsequent dyeing effects are good; the modification process is suitable for industrial mass production.

Description

technical field [0001] The invention relates to a process for treating cellulose fibers, more specifically, the invention relates to a process for modifying cellulose fibers, 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 a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/66D06P1/52D06P1/48D06P3/60D06P5/22
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com