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A kind of antibacterial and mildew proof polyurethane paint film based on n-alkyl glycol amine and preparation method thereof

An alkyl glycol amine, antibacterial and antifungal technology, which is applied in polyurea/polyurethane coatings, biocide-containing paints, antifouling/underwater coatings, etc., can solve problems such as environmental pollution and antibacterial performance reduction, and achieve reduction Infection, long-lasting effect, and the effect of reducing secondary infection

Active Publication Date: 2022-05-13
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing commercially available antibacterial products generally use additive antibacterial coatings, but the disadvantage of this antibacterial product is that the antibacterial performance of the paint will continue to decrease with the release of antibacterial agents, and the release of antibacterial agents 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 n-alkyl glycol amine and preparation method thereof
  • A kind of antibacterial and mildew proof polyurethane paint film based on n-alkyl glycol amine and preparation method thereof
  • A kind of antibacterial and mildew proof polyurethane paint film based on n-alkyl glycol amine and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Dissolve 5.95g of N-methyldiethanolamine and 10.3g of bromohexane 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 white A solid powder of hexyl bromide quaternized N-methyldiethanolamine (QMDEA-C6).

[0028] Take 7.37g of quaternized N-methyldiethanolamine, 26.32g of 2-ethyl-1,3-hexanediol, 15.57g of butyl acetate, and 0.05g of dibutyltin dilaurate, mix them, and stir them evenly with ultrasonic; the resulting solution Nitrogen was introduced and heated to 60°C; 43.73g of 1,6-hexamethylene diisocyanate and 15.57g of butyl acetate were added to the above solution, heated to 70°C, and reacted for 6 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.

[0029] The raw material formula is 284 parts ...

Embodiment 2

[0032] Dissolve 5.25g of N-methyldiethanolamine and 8.11g 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 white A solid powder of bromooctyl quaternized N-methyldiethanolamine (QMDEA-C8).

[0033] Take 7.37g of quaternized N-methyldiethanolamine, 26.32g of 2-ethyl-1,3-hexanediol, 15.57g of butyl acetate, and 0.05g of dibutyltin dilaurate, mix them, and stir them evenly with ultrasonic; the resulting solution Nitrogen was introduced and heated to 60°C; 43.73g of 1,6-hexamethylene diisocyanate and 15.57g of butyl acetate were added to the above solution, heated to 70°C, and reacted for 6 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.

[0034] The raw material formula is 284 parts of ...

Embodiment 3

[0037] Dissolve 8.88g of N-methyldiethanolamine and 15.56g 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 A white solid powder bromododecyl quaternized N-methyldiethanolamine (QMDEA-C12) was obtained.

[0038] Take 7.37g of quaternized N-methyldiethanolamine, 26.32g of 2-ethyl-1,3-hexanediol, 15.57g of butyl acetate, and 0.05g of dibutyltin dilaurate, mix them, and stir them evenly with ultrasonic; the resulting solution Nitrogen was introduced and heated to 60°C; 43.73g of 1,6-hexamethylene diisocyanate and 15.57g of butyl acetate were added to the above solution, heated to 70°C, and reacted for 6 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.

[0039] The raw material formula is 284 par...

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Abstract

The invention discloses a preparation method of a novel antibacterial and antifungal polyurethane paint film based on N-alkyl glycol amines. The steps are: dissolving N-alkyl glycol amines and halogenated alkanes in ethanol and heating React for 12h to 72h at Celsius, precipitate with a precipitant, and dry in vacuo to obtain a dihydroxyquaternary ammonium salt. Mix the dihydroxyquaternary ammonium salt with 2-ethyl-1,3-hexanediol, butyl acetate, and dilauric acid Dibutyltin is mixed, and ultrasonically stirred evenly, and the resulting solution is heated to 50-60°C under the protection of an inert gas; 1,6-hexamethylene diisocyanate and butyl acetate are added to the above solution, heated to 60-80°C, and reacted After 5-7 hours, the antibacterial polyurethane coating is obtained; the obtained polyurethane coating is brushed on the surface of the substrate, and dried naturally to form a film. The preparation method of the invention is simple, easy to operate, safe and environment-friendly, suitable for industrial production, and the coating has good anti-bacteria and mold performance.

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 N-alkyl glycol amines and a preparation method thereof. Background technique [0002] Antibacterial coatings are coatings with antibacterial functions. Antibacterial coatings are mainly divided into two types, additive coatings and structural coatings. Add-on antibacterial coating is to add antibacterial agent to the coating as an antibacterial component, by releasing the antibacterial agent to the surface of the paint, when the bacteria contact the surface of the board, the bacteria will be killed. Structural antibacterial coatings achieve antibacterial effects by modifying the paint film. The existing commercially available antibacterial products generally use additive antibacterial coatings, but the disadvantage of this antibacterial product is that the antibacterial performance of the paint wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D5/14C08G18/73C08G18/32
CPCC09D175/04C09D5/14C08G18/73C08G18/3206C08G18/3275
Inventor 徐福建段顺张红发
Owner BEIJING UNIV OF CHEM TECH
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