Reaction-type antimicrobial agent used for antimicrobial finishing of textiles

An antibacterial finishing agent and antibacterial finishing technology, which can be used in textiles and papermaking, fiber treatment, plant fibers, etc., and can solve the problems of lack of affinity for fibers

Inactive Publication Date: 2011-09-21
依文服饰股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it lacks affinity for fibers, so it is rarely used in textiles. Therefore, it is of great significance to introduce reactive groups into reactive antibacterial agents through chemical modification, and it has great market value.

Method used

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  • Reaction-type antimicrobial agent used for antimicrobial finishing of textiles
  • Reaction-type antimicrobial agent used for antimicrobial finishing of textiles
  • Reaction-type antimicrobial agent used for antimicrobial finishing of textiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Synthesis of N-triethoxysilylpropylisothiazolin-3-one

[0057] The air in the one-mouth eggplant-shaped flask under the ice-bath environment was exhausted with argon, and NaH, N, N-dimethylformamide (DMF) were added, and N of isothiazolin-3-one was added dropwise under electromagnetic stirring. N-dimethylformamide (DMF) solution, continue to stir until no bubbles are generated, and the whole process is protected by balloon argon; quickly add γ-chloropropyltriethoxysilane, and the molar ratio of the feed: isothiazolin-3-one: Sodium hydride: γ-chloropropyltriethoxysilane = 1: 1.2: 1.2; react in an ice bath for 30 minutes, transfer to an oil bath, heat up to 70-100°C, monitor the end point by TLC, react for about 1-5 hours and stop Heating; standing for cooling, rotary evaporation of DMF solvent, standing for cooling, adding ethyl acetate, suction filtering the precipitated salt, concentrating the filtrate, adding 80-100 mesh silica gel mixing material, and performing colu...

Embodiment 2

[0060] Synthesis of N-(4-bromobutyl)-isothiazolin-3-one

[0061] The air in the one-mouth eggplant-shaped flask under the ice-bath environment was exhausted with argon, and NaH, N, N-dimethylformamide (DMF) were added, and N of isothiazolin-3-one was added dropwise under electromagnetic stirring. N-dimethylformamide (DMF) solution, continue to stir until no bubbles are generated, and the whole balloon is protected by argon; slowly add the sodium salt of isothiazolin-3-one to 1,4- In dibromobutane, react at room temperature; after the dropwise addition, move it into an oil bath and slowly raise the temperature to 30-70°C, and monitor the end point by TLC; the reaction is complete in about 1-2h, stop heating, and let it cool down. Feeding molar ratio: isothiazolin-3-one: sodium hydride: dibromobutane=1:1.2:1.2. The DMF solvent was rotary evaporated, ethyl acetate was added, the precipitated salt was suction filtered, the filtrate was concentrated, and 80-100 mesh silica gel was...

Embodiment 3

[0064] Synthesis of N-triethoxysilylthiopropylbutylisothiazolin-3-one

[0065] Evacuate the air in the one-mouth eggplant-shaped bottle under the ice bath environment with argon, add NaH and absolute dry tetrahydrofuran (THF), slowly add γ-mercaptopropyltriethoxysilane dropwise under electromagnetic stirring, and the dropwise addition is completed Then continue to stir until no bubbles are generated; the whole process is protected by balloon argon. Add N-(4-bromobutyl)-isothiazolin-3-one, the molar ratio of N-(4-bromobutyl)-isothiazolin-3-one: γ-mercaptopropyltriethoxysilane : NaH=1:1.2:1.44; react in ice bath for 30min, transfer to an oil bath and slowly heat up to THF reflux temperature 66°C, TLC monitors the end point, and the reaction is complete in about 3h; stop heating, let stand to cool, and rotate to evaporate THF After adding ethyl acetate, the precipitated salt was suction filtered, and the filtrate was concentrated and mixed with 80-100 mesh silica gel for column ...

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PUM

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Abstract

The invention relates to a reaction-type antimicrobial agent used for antimicrobial finishing of textiles. The finishing agent is the reaction-type antimicrobial agent characterized in that isothiazolinone serves as an antimicrobial main body, and a branched chain of which the tail end contains a trialkoxysilane base serves as an active group; preferably, branched chains CH2CH2CH2Si(OCH2CH3)3 and -CH2CH2CH2CH2SCH2CH2CH2Si (OCH2CH3)3 are introduced into heterocyclic ring 2 sites. The reaction-type antimicrobial agent has the advantages that the antimicrobial agent and cellulose molecules form covalent link and has good washing resistance and durable antibacterial property. The isothiazolinone antiseptic antimicrobial agent is a novel and efficient nonoxidizing bactericide with broad spectrum, has the advantages of strong antimicrobial activity, small application dose, good compatibility, low toxicity and the like and is environmentally-friendly. The isothiazolinone antiseptic antimicrobial agent is chemically modified to be introduced into the active group to prepare the reaction-type antimicrobial agent. The reaction-type antimicrobial agent has an important meaning and market value.

Description

technical field [0001] The invention relates to a preparation method and application of a fabric reactive antibacterial finishing agent. technical background [0002] Textiles are closely related to people's daily life. At the same time, all kinds of textiles are also excellent habitats for bacteria, fungi and other microorganisms, and an important source of disease transmission. Therefore, it is of great significance to study the antibacterial properties of fabrics. Although the current fungicides have the advantages of good antibacterial effect, high safety, and mature processing technology, they also have disadvantages such as durability and poor broad-spectrum. [0003] The reactive antibacterial finishing agent is to introduce active groups through the chemical modification of the existing antibacterial finishing agent, to synthesize a new type of reactive finishing agent itself or to prepare a potentially reactive new type of antibacterial finishing agent that can be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/513D06M101/06
Inventor 刘振东刘霞陈小斌王晓宁张博伦
Owner 依文服饰股份有限公司
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