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Multifunctional reactive cotton ultraviolet absorbent, synthetic method and use thereof

A multi-functional, synthetic method technology, applied in organic chemistry, textile and papermaking, fiber processing, etc., can solve the problems of reduced UV resistance, easy loss, disappearance, etc., and achieves the effect of good reactivity

Inactive Publication Date: 2008-07-23
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the traditional UV absorbers are fixed into the textile fibers by means of physical adsorption, adhesion, crosslinking, doping, etc. The products have the following disadvantages during use: (1) The UV absorbers are firmly combined with the textile fibers It is easy to lose, and with the prolongation of use time or the increase of washing times, the anti-ultraviolet function gradually decreases and finally disappears; (2) the use of cross-linking or bonding methods will not only affect the performance of textiles, but also Sometimes it also reduces the UV resistance; (3) The method of doping is mainly suitable for the finishing of synthetic fibers. Since the doping needs to be carried out before spinning, the compatibility between the UV absorber and the textile fiber is very important
Although some progress has been made in the research of reactive ultraviolet absorbers in China, a series of compounds with both the ability to react with cotton fibers and a certain ultraviolet absorption effect have been developed, but the reported compounds do not have other finishing functions. Can not meet people's growing multi-functional needs

Method used

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  • Multifunctional reactive cotton ultraviolet absorbent, synthetic method and use thereof
  • Multifunctional reactive cotton ultraviolet absorbent, synthetic method and use thereof
  • Multifunctional reactive cotton ultraviolet absorbent, synthetic method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 30.6g of 23.5% 2,-dichloro-5-(2,4-dichlorophenyl)oxybenzenesulfonic acid aqueous solution and put it into a four-neck flask, and adjust the pH value to 6~6 with 30% NaOH aqueous solution. 8, then add 47g of water to the solution. Cool down to 0-5°C in an ice bath. Slowly add 5g of cyanuric chloride, and keep the reaction at 0-5°C for 90min. Then use 30% NaOH aqueous solution to adjust the pH value to 6.0-6.2, raise the temperature to 50°C, add 2.2g of 2,4-diaminobenzenesulfonic acid, and keep the temperature for 3 hours. During the reaction, use 10% Na 2 CO 3 The pH of the solution was adjusted so that it remained in the range of 5-6. Finally, a yellow-brown transparent solution is obtained, and compound a is obtained after separation and purification. Compound a is a multifunctional finishing agent for cotton with anti-ultraviolet properties and antibacterial properties. The resulting solution can be directly used for cotton fabric finishing without finishing...

Embodiment 2

[0033] This example is a research on the anti-ultraviolet and antibacterial performance of compound a, including determining the optimized finishing process, the test results of anti-ultraviolet performance and the test results of antibacterial performance.

[0034]For the optimized finishing process of compound a on pure cotton poplin, five factors and six levels of orthogonal experiments were used to finally obtain the optimized finishing process as follows: bath ratio 1:15, put finishing agent and cotton cloth at room temperature, and the amount of finishing agent was fabric weight 1 to 10% of the solution, heat up to 65°C, add 40g / L sodium sulfate, keep warm for 40min, then add 30g / L soda ash, heat up to 90°C, keep warm for 25min, wash once with hot water, rinse with cold water, and dry.

[0035] Under the optimized finishing process conditions, the light brown viscous liquid obtained in Example 1 is used to directly carry out anti-ultraviolet finishing to the pure cotton p...

Embodiment 3

[0042] Add 4.3g of sodium bicarbonate into 80g of ice water, after completely dissolved, slowly add 7.8g of 2,2,6,6-tetramethylpiperidinol, and stir until the solution becomes clear. Then add 9.2 g of cyanuric chloride several times in small batches, and keep warm at 0-5°C for 90 minutes. After the reaction is completed, adjust the pH to 6-6.2 with a certain concentration of sodium hydroxide solution, then raise the temperature to 40°C, add 4.7g of 2,4-diaminobenzenesulfonic acid dropwise, and keep the reaction for 3 hours. During the reaction process, adjust the pH to 5-6 with a certain concentration of sodium hydroxide solution every half hour. Finally, 16 g of p-(β-sulfate ethylsulfone) aniline was slowly added, and stirred at 85-90° C. for 3 hours. After the reaction, a light brown solution is obtained, which is separated by filtration and dried to obtain compound b, which is a multifunctional finishing agent with both anti-ultraviolet and light-stabilizing properties. T...

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Abstract

The invention relates to a multifunctional reactive ultraviolet absorbent which is used for cotton fiber, a synthetic method and application, the general formula I of the absorbent is as the right formula, the synthetic method comprises that: triclosan antibacterial compounds, hindered amine light stabilizing compounds or amino silicone oil softening finishing compounds and other functional finishing agents are added into cyanuric chloride, the solvent is water, the reaction time is 1-2h, at 0-5 DEG C, the groups of functional finishing agents are introduced; (2) the materials connecting the groups are added, the solvent is water, the reaction time is 3-4h, at 40-50 DEG C, the two triazine rings are connected; (3) or with other reacting active material, water as the solvent, reacting 3-4h, at 80-90 DEG C, other active groups are introduced on the triazine rings. The multifunctional reactive ultraviolet absorbent has the advantages of good reactivity, water soluble, ultraviolet absorbing capacity and other finishing functions as antibacterial property, light stability on cotton fabric.

Description

technical field [0001] The invention belongs to the field of ultraviolet absorbers, in particular to a multifunctional reactive cotton ultraviolet absorber, its synthesis method and application. Background technique [0002] Ultraviolet rays are electromagnetic waves with a wavelength of 180-400nm. An appropriate amount of ultraviolet radiation has a bactericidal effect and can promote the synthesis of vitamin D, which is beneficial to human health, but excessive ultraviolet radiation is very harmful to the human body. Modern scientific research shows that the harmful effects of ultraviolet rays on the human body far outweigh its beneficial effects. Excessive ultraviolet radiation can induce skin diseases, even skin cancer, and also cause cataracts and reduce the immune function of the human body. Therefore, the protection of ultraviolet rays has attracted more and more attention. [0003] Ultraviolet absorbers are substances that can strongly and selectively absorb high-e...

Claims

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Application Information

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IPC IPC(8): D06M13/358D06M15/643C07D251/46C07D401/14C08G77/388D06M101/06
Inventor 沈华郭玉良金雅殷志剑朱泉
Owner DONGHUA UNIV
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