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

Preparation method of composite antibacterial finishing agent

A compound antibacterial and finishing agent technology, which is applied in fiber treatment, biochemical fiber treatment, textiles and papermaking, etc., and can solve problems such as easy wash-off, inability to exert the antibacterial effect of nano-zinc oxide for a long time, and shedding.

Active Publication Date: 2017-10-24
科凯精细化工(上海)有限公司
View PDF4 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Quaternary ammonium salt-type polymer antibacterial agents and nano-zinc oxide are two commonly used antibacterial agents. Among them, quaternary ammonium salt-type polymer antibacterial agents are not washable, easy to wash off, antibacterial can not last long, and are toxic to the human body after elution. However, nano-zinc oxide has excellent properties such as non-toxicity, large specific surface area, anti-ultraviolet, and antibacterial, so many people have tried to combine the two to prepare a composite antibacterial agent of quaternary ammonium salt copolymer and nano-zinc oxide. It is used in the finishing of textiles
However, the binding force between nano-zinc oxide particles and quaternary ammonium salt copolymer is not strong, resulting in the rapid loss of nano-zinc oxide in the use process of the finished textile, and the antibacterial effect of nano-zinc oxide cannot be brought into play for a long time; The ammonium salt copolymer composite antibacterial agent is easy to fall off from the textile, and loses its antibacterial properties after several washes

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
  • Preparation method of composite antibacterial finishing agent
  • Preparation method of composite antibacterial finishing agent

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] The preparation method of the composite antibacterial finishing agent of one embodiment, comprises the following steps:

[0027] Step S110, using a silane coupling agent containing double bonds to modify the nano-zinc oxide to obtain active nano-zinc oxide.

[0028] In one embodiment, the silane coupling agent containing double bonds is γ-methacryloxypropyltrimethoxysilane.

[0029] In one of the embodiments, the step of modifying nano-zinc oxide to obtain active nano-zinc oxide with a silane coupling agent containing a double bond is specifically:

[0030] Step S111 , after mixing nanometer zinc oxide, γ-methacryloxypropyltrimethoxysilane and a solvent, ultrasonically dispersing to obtain a dispersion liquid.

[0031] Preferably, ultrasonic dispersion is performed for 1 hour to obtain a dispersion.

[0032] Preferably, the mass ratio of nanometer zinc oxide to γ-methacryloxypropyltrimethoxysilane is 1:1˜1:5.

[0033] Preferably, the solvent is ethanol and water, and...

Embodiment 1

[0067] (1) Preparation of active nano-zinc oxide: Mix 1.0g nano-zinc oxide, 40g ethanol, 18g water and 4g γ-methacryloxypropyltrimethoxysilane evenly, and ultrasonically disperse for 1h to obtain a dispersion liquid, and heat it at 60°C The water bath was refluxed for 12 hours, then cooled to room temperature, and the dispersion was centrifuged and washed to obtain active nano-zinc oxide;

[0068] (2) Synthesis of composite antibacterial finishing agent: first, 4.2 g of ammonium persulfate was dissolved in 10 g of deionized water to obtain ammonium persulfate aqueous solution, which was divided into three equal parts. Then 0.9g active nano-zinc oxide, 25g dimethyl diallyl ammonium chloride, 58.8g deionized water, 0.6g acrylic acid, 0.3g allyl glycidyl ether, and 4.2g ammonium persulfate aqueous solution were added to the three-necked flask , stir evenly, then heat in a water bath to 80°C, and react for 15 minutes; then add dropwise 0.6g of acrylic acid, 0.3g of allyl glycidyl ...

Embodiment 2

[0070] (1) Preparation of active nano-zinc oxide: Mix 1.0g nano-zinc oxide, 40g ethanol, 18g water and 4g γ-methacryloxypropyltrimethoxysilane evenly, and ultrasonically disperse for 1h to obtain a dispersion liquid, and heat it at 60°C The water bath was refluxed for 12 hours, then cooled to room temperature, and the dispersion was centrifuged and washed to obtain active nano-zinc oxide;

[0071] (2) Synthesis of composite antibacterial finishing agent: first, 4.2 g of ammonium persulfate was dissolved in 10 g of deionized water to obtain ammonium persulfate aqueous solution, which was divided into three equal parts. Then 0.2g active nano zinc oxide, 25g dimethyl diallyl ammonium chloride, 59.5g deionized water, 0.6g acrylic acid, 0.3g allyl glycidyl ether, and 4.2g ammonium persulfate aqueous solution were added to the three-necked flask , stir evenly, then heat in a water bath to 80°C, and react for 15 minutes; then add dropwise 0.6g of acrylic acid, 0.3g of allyl glycidyl ...

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

No PUM Login to View More

Abstract

The invention relates to a preparation method of a composite antibacterial finishing agent. The preparation method comprises the following steps: modifying nano zinc oxide by a silane coupling agent containing double bonds to obtain modified active nano zinc oxide; providing reaction raw materials; taking water as the solvent, and carrying out polymerization reactions among active nano zinc oxide, dimethyl diallyl ammonium chloride, carboxyl acrylic acid monomers, and allyl glycidyl ether in the presence of an initiator to obtain the composite antibacterial finishing agent. The composite antibacterial finishing agent prepared by the provided preparation method is a complex of quaternary ammonium salt copolymer and nano zinc oxide. Through the synergistic effect between quaternary ammonium cations and nano zinc oxide, the antibacterial properties of inorganic materials and organic materials can be fully exerted, the finishing agent can enable textiles to have a very good antibacterial performance, at the same time, the antibacterial finishing agent contains active groups that can interact with cotton fibers, and the antibacterial effect can last for a long term.

Description

technical field [0001] The invention relates to a preparation method of a composite antibacterial finishing agent. Background technique [0002] As we all know, there are various bacteria in the environment of human life. Someone tested the bacteria and bacteria growth of indoor utensils by swabbing and sampling, and found that 21% of the "clean" dishcloths were actually extremely contaminated with bacteria, with the number of bacteria per square inch kitchen sponge and dishcloth being 10 million and 1 million. The latest "Survey Report on the Hygiene Status of Primary School Students' Clothing" released by the Environmental and Health-Related Product Safety Institute of the Chinese Center for Disease Control and Prevention also shows that the bacterial contamination on the surface of children's daily clothes is not only higher than that of primary school students' hands, but also higher than that of toilet seats and cash machine keyboards. The surface has a high level of ...

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
IPC IPC(8): D06M15/356C08F292/00C08F226/02C08F220/06C08F216/14D06M101/06
CPCC08F292/00D06M15/3562D06M16/00D06M2101/06D06M2400/01C08F226/02
Inventor 任一波俞成丙
Owner 科凯精细化工(上海)有限公司
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