Method for producing spinning dyeing viscose fiber and spinning dyeing viscose fiber thereof

A technology of viscose fiber and production method, which is applied in the production of spinning dyed viscose fiber and the field of spinning dyed viscose fiber, which can solve the problem of unstable color of colored viscose fiber, the inability to control the oxidation-reduction process, and the inability to realize large-scale production and other problems, to achieve the effect of rich color varieties, good spinnability, and improved color fastness

Inactive Publication Date: 2008-01-16
YIBIN HIEST FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because this method does not use control measures such as oxidants and related processes and equipment, it cannot effectively control the redox process of indigo and anthraquinone vat dyes, and the colored viscose fiber obtained has unstable color and poor spinnability. , unable to achieve industrialized mass production

Method used

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  • Method for producing spinning dyeing viscose fiber and spinning dyeing viscose fiber thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Example 1: acid environment oxidation

[0046] A. Preparation of color paste: According to the requirements of viscose fiber color, weigh a certain amount of one or several dyes according to the concentration ratio, mix and disperse them in desalted water, add alkaline solution, and then according to the reaction molar ratio, in Add reducing agent and oxidizing agent to the solution, and finally use desalinated water to make up the volume, then filter the solution into the storage tank, filter to remove particulate impurities, and make a color paste for later use;

[0047] Wherein, the adding amount of the reducing agent and the oxidizing agent is respectively 1-5 times and 0.5-2 times of the reaction mole number.

[0048] Dyes include: vat dyes, sulfur dyes, water-insoluble organic dyes

[0049] Alkaline solution can use NaOH aqueous solution.

[0050] Reaction molar ratio: determined according to the reaction formula of different dyes.

[0051] The reducing agent i...

Embodiment 2

[0073] Embodiment 2: alkaline environment oxidation

[0074] A. Preparation of color paste: According to the requirements of viscose fiber color, weigh a certain amount of one or several dyes according to the concentration ratio, mix and disperse them in desalted water, add alkaline solution, and then according to the reaction molar ratio, in Add reducing agent and oxidizing agent to the solution, and finally use desalinated water to make up the volume, then filter the solution into the storage tank, filter to remove particulate impurities, and make a color paste for later use;

[0075] Wherein, the adding amount of the reducing agent and the oxidizing agent is respectively 1-5 times and 0.5-2 times of the reaction mole number.

[0076] Dyes include: vat dyes, sulfur dyes, water-insoluble organic dyes.

[0077] Alkaline solution can use NaOH aqueous solution.

[0078] Reaction molar ratio: determined according to the reaction formula of different dyes.

[0079] The reducing...

Embodiment 3

[0102] Embodiment 3: embroidery thread production method

[0103] After the humidity-conditioning process in Example 1 and Example 2, the spun and dyed viscose fiber cakes are ternary, twisted, twisted or rolled into colored embroidery threads. Processes such as skeining, dyeing, opening, and barreling of colored silk are omitted.

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Abstract

The invention discloses a method of spinning dyed viscose fibers and dyed viscose fibers produced by the method, and overcomes the problems in the prior art of colored viscose fibers. The method comprises adding a reducer and an oxidizer in the dye, mixing the resulting mixture with a viscose glue to obtain colored viscose glue, and spinning. During the processes from formation to refining of reduced spinning threads or after the spinning process is completely, reduced threads are oxidized and stained under an acidic or alkaline condition to form spinning dyed viscose fibers. Based on the research of dyeing mechanism, the invention breaks through the conventional process of pre-spinning dyeing and late finishing, and directly produces colored viscose fibers. The invention realizes the monofilament dyeing and improves the dyeing uniformity, color fastness and color brightness, enriches the color tone, and meets the standard of stitch yarn. Additionally, the invention can greatly reduce the production cost and avoid the contamination of the subsequent processing. The product has beautiful color, uniform dyeing, comfortable feel and wide application range.

Description

technical field [0001] The present invention relates to man-made fiber and its production method, in particular to a kind of man-made fiber dyed in the spinning process, and the production method of spinning dyed man-made fiber. Background technique [0002] Man-made fibers are also called rayon, viscose fiber, and regenerated cellulose fiber. Viscose color injection before spinning or post-dyeing and finishing processing can make man-made fiber products of various colors, which are widely used in yarn-dyed, home textiles, gold and silver silk, Embroidery thread and yarn field. [0003] Dyeing after filament forming, referred to as post-spinning dyeing, is an obsolete process, which has disadvantages such as complicated process, high cost, and large sewage discharge. So in recent years, the pre-spinning coloring process has been proposed. That is to say, the pigment is injected into the viscose to become colored viscose, and then spinning. [0004] The colored yarn produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/16D02G3/02D02G3/04
Inventor 冯涛张勇邓传东李蓉玲鄢勇气唐金钟胡远成
Owner YIBIN HIEST FIBER
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