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Process for producing color chitin viscose fibre spinning dope

A technology for chitin viscose and spinning dope, which is applied in the directions of single-component cellulose rayon, textile and papermaking, fiber chemical characteristics, etc. Preparation method, large amount of coloring raw materials and pigments, easy to produce color difference and stripe and other problems, to achieve the effect of bright color, strong color fastness, reducing pollution and waste

Inactive Publication Date: 2007-04-11
AOYANG SCI & TECH JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the development of chitin fiber, it has excellent antibacterial and hygroscopic properties, but the disadvantages are: difficult to process and produce, resulting in high price and difficult to popularize; low fiber strength, poor spinnability; low proportion in blending, limited functions ;It is easy to produce color difference and stripes when dyeing; currently only for mass production
[0005] In view of the advantages and disadvantages of chitin fiber and viscose fiber, people have carried out a lot of research on the blending technology of chitin and viscose fiber spinning stock solution and the products spun, but there is no relevant information about the ability to manufacture Preparation method of colored spinning stock solution for colored chitin viscose fiber
Because re-dyeing after spinning will cause the attenuation of the antibacterial function of the fiber on the one hand, and on the other hand, the subsequent dyeing will cause certain environmental pollution, and the amount of coloring raw materials and pigments is also relatively large. Therefore, this patent proposes a method for preparing colored The processing method of the spinning dope of chitin viscose fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Add 200 kg of chitin raw materials with a particle size of less than 4mm and an ash content of less than 0.3% into the reaction kettle at 23°C, then add a 50% sodium hydroxide aqueous solution into the reaction kettle, soak for 240 minutes, The liquor ratio is 15; then add 2,000-3,000 kg of crushed ice, and then add 71 kg of carbon disulfide, control the reaction temperature not higher than 5°C, and carry out the reaction in a sealed container until the carbon disulfide is completely reacted to obtain chitin xanthogenic acid Ester viscous solution, the content of chitin in the viscous solution is 6-8%, and the content of sodium hydroxide is 5-6%. The viscous solution is stored in a stainless steel tank after filtration and defoaming. The viscous solution obtained in the above steps, as well as the viscose fiber spinning stock solution and the coloring agent are continuously sent into the static mixer and the dynamic mixer through the injection metering pump for mixing, ...

Embodiment 2

[0017] Add 100 kg of chitin raw materials with a particle size of less than 4mm and an ash content of less than 0.2% into the reaction kettle at 27°C, then add a 40% sodium hydroxide aqueous solution to the reaction kettle, soak for 200 minutes, The bath ratio is 20; then add about 1500 kg of crushed ice for stirring, then add 38 kg of carbon disulfide, control the reaction temperature not higher than 5°C, and react in a sealed container until the carbon disulfide completely reacts after several hours to obtain Chitin xanthate viscous solution, the content of chitin in the viscous solution is 6-8%, and the content of sodium hydroxide is 5-6%. The viscous solution is stored in a stainless steel tank after filtration and defoaming. The viscous solution obtained in the above steps, as well as the viscose fiber spinning stock solution and the coloring agent are continuously sent into the static mixer and the dynamic mixer through the injection metering pump for mixing, and the mix...

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Abstract

The process of producing color chitin viscose fiber spinning dope includes the following steps: 1. alkalizing the chitin material through soaking it in water solution of sodium hydroxide in the concentration of 10-60 % at the temperature from -15 deg.c to 40 deg.c for 20-600 min in the bath ratio of 2-30; 2. xanthating reaction to obtain viscous solution of chitin xanthate; and 3. mixing the viscous solution of chitin xanthate, viscose fiber spinning dope and coloring agent in certain weight proportion to react to obtain the color chitin viscose fiber spinning dope. Colorizing the spinning dope has greatly raised production efficiency, raised product color homogeneity and color fastness and lowered pollution and waste.

Description

technical field [0001] The invention relates to the technical field of spinning stock solution for manufacturing chitin viscose fiber, in particular to a preparation method of colored spinning stock solution capable of producing colored chitin viscose fiber. Background technique [0002] Chitin widely exists in the shells of insects and aquatic crustaceans and the cell walls of seaweeds, such as crabs, shrimps, squid bones, egg shells, cockroach fungi, etc. Its chemical name is called polyacetamide glucose. Its reserves are second only to plant fiber. Nearly 100 billion tons of chitin are generated and decomposed every year in the world. It is also the only positively charged animal cellulose found in nature so far. Because its molecular structure contains unsaturated cationic groups, it has a strong adsorption effect on various harmful substances with negative charges, and can remove "garbage" in the human body, thereby repairing the damaged cells of the human body And ac...

Claims

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Application Information

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IPC IPC(8): D01F2/10
Inventor 迟健吴玉芳徐金祥蔡岳平叶荣明
Owner AOYANG SCI & TECH JIANGSU
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