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Preparation method and application of antiviral moisture-permeable coating

A toxic and moisture-permeable technology, applied in antifouling/underwater coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as lack of anti-virus effect and indirect infection of protective clothing, and achieve excellent anti-virus performance, Prevents the decline of antiviral properties and the effect of high water vapor transmission rate

Inactive Publication Date: 2020-10-30
绍兴百立盛新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, high-performance protective clothing materials represented by polyethylene film and thermoplastic polyurethane film do not have anti-virus effects. Viruses can be deposited on the surface of protective clothing, and there is a possibility of indirect infection when changing protective clothing

Method used

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  • Preparation method and application of antiviral moisture-permeable coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Under the protection of nitrogen, 10g polyethyleneimine (BASF lupasol WF, number average molecular weight: 25000), 10g bromobutane, and 10g potassium carbonate were added to ethanol, stirred and heated at reflux at 80°C for 8h. After cooling, the solid was removed by filtration, and the volatile matter was removed from the filtrate at 110° C. under nitrogen protection to obtain polyethyleneimine quaternary ammonium salt A.

[0044] Dissolve 5g of polyvinyl alcohol 1799 in 95ml of hot water, cool to room temperature 25°C, then add 10g of isocyanate, 1g of polyethyleneimine quaternary ammonium salt A and 1g of oxalic acid, stir evenly and vacuum defoam to obtain the anti-foaming agent of the present invention. Virus breathable paint. The antiviral moisture-permeable coating was coated on a PET non-woven fabric with a thickness of 30 um, and dried in an oven at 60° C. for 1 min to obtain the antiviral moisture-permeable film of the present invention.

Embodiment 2

[0046] Under the protection of nitrogen, 10g of polyethyleneimine (BASF lupasol WF, Germany, number average molecular weight: 25000), 10g of bromobutane, 10g of bromohexane, and 10g of potassium carbonate were added to ethanol, stirred and heated to reflux at 80°C for 8h. After cooling, the solid was removed by filtration, and under the protection of nitrogen, the filtrate was subjected to negative pressure removal of volatiles at 110° C. to obtain polyethyleneimine quaternary ammonium salt B.

[0047]Add 10g of polyurethane emulsion (Anhui Andahuatai, AH1618) into 90ml of water, cool to room temperature, then add 10g of isocyanate, 1g of polyethyleneimine quaternary ammonium salt and 1g of oxalic acid, stir evenly and vacuum defoam, to obtain the polyurethane of the present invention Anti-viral moisture-permeable coating. The antiviral moisture-permeable coating was coated on a PET non-woven fabric with a thickness of 30 um, and dried in an oven at 60° C. for 1 min to obtain ...

Embodiment 3

[0049] Under the protection of nitrogen, 10g of polyethyleneimine (BASF lupasol WF, number average molecular weight: 25000), 10g of bromobutane, 10g of bromooctane, and 10g of potassium carbonate were added to ethanol, stirred and heated to reflux at 80°C for 8h. After cooling, the solid was removed by filtration, and the volatile matter was removed from the filtrate under negative pressure at 110° C. under nitrogen protection to obtain polyethyleneimine quaternary ammonium salt C.

[0050] Disperse 5g of hydroxyethyl cellulose (Shandong Chuangyao, HEC-60000) in 95ml of water, and dissolve it completely with a small amount of ammonia water, then add 10g of isocyanate, 1g of polyethyleneimine quaternary ammonium salt and 1g of oxalic acid, stir well and vacuum remove Bubble, obtain antiviral moisture-permeable coating of the present invention. The antiviral moisture-permeable coating was coated on a PP non-woven fabric with a thickness of 20 um, and dried in an oven at 60° C. f...

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Abstract

The invention discloses a preparation method of an antiviral moisture-permeable coating and an application of the antiviral moisture-permeable coating in preparation of an antiviral moisture-permeablefilm. The preparation method comprises the following steps: 1) reacting polyethyleneimine with halogenated hydrocarbon to obtain polyethyleneimine quaternary ammonium salt; and 2) matching polyethyleneimine quaternary ammonium salt and oxalic acid into a water-based polymer to obtain the antiviral moisture-permeable coating. After the antiviral moisture-permeable coating is attached to a porous base film, heat treatment is performed. The porous base film serves as a base material of the moisture-permeable film, and the antiviral moisture permeable film is obtained. The moisture-permeable filmprovided by the invention has an antiviral capability; the quaternary ammonium salt polymer is added, so that the influence on the water vapor permeability is not obvious, and thus the antiviral moisture-permeable film disclosed by the invention not only has the characteristic of high moisture permeability, but also has excellent antiviral performance, has the functions of blocking aerosol and inhibiting viruses, and is high in water vapor permeability, and can be used for preparing medical protective clothing.

Description

technical field [0001] The invention relates to the field of antiviral moisture-permeable materials, in particular to a method for preparing an antiviral moisture-permeable coating and its application in preparing an antiviral moisture-permeable film. Background technique [0002] With the increase of environmental pollution and the intensification of human impact on the natural environment, the proliferation and transmission of bacteria and viruses has become more and more obvious. The number of people who die from the virus every year in the world has exceeded 4 million, which seriously threatens human health. In recent years, viral infections, such as SARS virus, Ebola virus, H1N1 virus, NCP virus, etc., have had a serious impact on society. [0003] Medical protective clothing, as a basic material against viruses, guarantees the health of medical staff. The protective clothing fabric uses the breathable membrane as the isolation layer, and becomes the fabric by compoun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D101/28C09D5/14C09D7/63C08J7/04C08J9/36D06N3/00D06N3/04D06N3/14C08L23/12C08L23/06
CPCC08J7/04C08J9/365C08J2323/06C08J2323/12C08J2475/04C08J2479/02C09D5/14C09D101/284C09D175/04C09D7/63D06N3/0011D06N3/0036D06N3/0038D06N3/0061D06N3/0063D06N3/04D06N3/14D06N2209/126C08L79/02C08K5/29
Inventor 金伟伟娄琪超徐意
Owner 绍兴百立盛新材料科技有限公司
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