A kind of antibacterial and mildew-proof polyurethane paint film based on triethanolamine and preparation method thereof

A triethanolamine, antibacterial and antifungal technology, used in polyurea/polyurethane coatings, biocide-containing paints, antifouling/underwater coatings, etc., can solve the problems of reduced antibacterial properties of paints, environmental pollution, etc. , The preparation method is simple, the effect is lasting

Active Publication Date: 2022-04-29
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this antibacterial product is that the antibacterial performance of the paint will continue to decrease with the release of the antibacterial agent, and the release of the antibacterial agent to the environment will also cause environmental pollution.

Method used

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  • A kind of antibacterial and mildew-proof polyurethane paint film based on triethanolamine and preparation method thereof
  • A kind of antibacterial and mildew-proof polyurethane paint film based on triethanolamine and preparation method thereof
  • A kind of antibacterial and mildew-proof polyurethane paint film based on triethanolamine and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Dissolve 4.5g of triethanolamine and 12.5g of hexylbromide in 20g of ethanol, stir to form a homogeneous solution, heat the above solution to 70°C, condense and reflux for 24 hours; precipitate with ethyl acetate, and dry in vacuo to obtain a white solid bromide powder. Hexane quaternized triethanolamine (QTEA-C6).

[0026] Take 11.5g of quaternized triethanolamine, 39.5g of 2-ethyl-1,3-hexanediol, 25.0g of butyl acetate, 0.1g of dibutyltin dilaurate and mix them with ultrasonic stirring; Heat to 60°C; add 65.6g of 1,6-hexamethylene diisocyanate and 25.0g of butyl acetate into the above solution, heat to 75°C, and react for 5 hours to obtain an antibacterial polyurethane coating. Paint it on the surface of the metal base material with a brush, and dry it to obtain an antibacterial and antifungal polyurethane paint film.

[0027] The raw material formula is 328 parts of 1,6-hexanediisocyanate, 197 parts of 2-ethyl-1,3-hexanediol, 0.4 parts of dibutyltin dilaurate, 257 p...

Embodiment 2

[0030] Dissolve 5.95g of triethanolamine and 9.66g of bromooctane in 15g of ethanol, stir to form a homogeneous solution, heat the above solution to 70°C, condense and reflux for 24 hours; precipitate with ethyl acetate, and dry in vacuo to obtain a white solid bromine powder. Octane quaternized triethanolamine (QTEA-C8).

[0031] Take 12.5g of quaternized triethanolamine, 39.5g of 2-ethyl-1,3-hexanediol, 25.0g of butyl acetate, 0.1g of dibutyltin dilaurate and mix them with ultrasonic stirring; Heat to 60°C; add 65.6g of 1,6-hexamethylene diisocyanate and 25.0g of butyl acetate into the above solution, heat to 75°C, and react for 5 hours to obtain an antibacterial polyurethane coating. Paint it on the surface of the metal base material with a brush, and dry it to obtain an antibacterial and antifungal polyurethane paint film.

[0032] The raw material formula is 328 parts of 1,6-hexanediisocyanate, 197 parts of 2-ethyl-1,3-hexanediol, 0.4 parts of dibutyltin dilaurate, 257 p...

Embodiment 3

[0035] Dissolve 5.95g of triethanolamine and 12.46g of bromododecane in 15g of ethanol, stir to form a homogeneous solution, heat the above solution to 70°C, condense and reflux for 24 hours; precipitate with ethyl acetate, and dry in vacuo to obtain a white solid Powdered bromododecyl quaternized triethanolamine (QTEA-C12).

[0036] Take 16.5g of quaternized triethanolamine, 39.5g of 2-ethyl-1,3-hexanediol, 25.0g of butyl acetate, 0.1g of dibutyltin dilaurate and mix them with ultrasonic stirring; Heat to 60°C; add 65.6g of 1,6-hexamethylene diisocyanate and 25.0g of butyl acetate into the above solution, heat to 75°C, and react for 5 hours to obtain an antibacterial polyurethane coating. Paint it on the surface of the metal base material with a brush, and dry it to obtain an antibacterial and antifungal polyurethane paint film.

[0037] The raw material formula is 328 parts of 1,6-hexanediisocyanate, 197 parts of 2-ethyl-1,3-hexanediol, 0.4 parts of dibutyltin dilaurate, 25...

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PUM

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Abstract

The invention discloses a preparation method of a novel antibacterial and antifungal polyurethane paint film based on triethanolamine. The steps are: dissolving triethanolamine and halogenated alkanes in ethanol, reacting at 30°C to 80°C for 12h to 72h, and precipitating with a precipitating agent, Vacuum drying to obtain quaternized triethanolamine, quaternized triethanolamine and 2-ethyl-1,3-hexanediol, butyl acetate, dibutyltin dilaurate ultrasonically stirred under inert gas protection, heated to 50~60℃; add 1,6-hexamethylene diisocyanate and butyl acetate into the above solution, heat to 65~85℃, react for 3~6 hours to obtain antibacterial polyurethane coating; brush polyurethane on the surface of the substrate, and dry naturally film forming. The invention has good antibacterial and mold performance, better solvent resistance and mechanical performance of the paint film, simple preparation method, convenient operation, safety and environmental protection, and is suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of antibacterial coatings, and relates to a novel antibacterial and antifungal polyurethane paint film based on triethanolamine and a preparation method thereof. Background technique [0002] Additive antibacterial coatings are generally used in existing commercially available antibacterial products. The antibacterial additives are mostly inorganic antibacterial agents and small molecule organic antibacterial agents. The coatings can kill bacteria on the surface of the paint film through the release of antibacterial agents. However, the disadvantage of this antibacterial product is that the antibacterial performance of the paint will continue to decrease with the release of the antibacterial agent, and the release of the antibacterial agent to the environment will also cause environmental pollution. Contents of the invention [0003] In view of this, the first object of the present invention is to provide ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D5/14C08G18/32
CPCC09D175/04C09D5/14C08G18/3206C08G18/3281
Inventor 徐福建段顺张红发
Owner BEIJING UNIV OF CHEM TECH
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