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Coating composition with long-term antimicrobial properties

An evaporator and cleaning agent technology, used in antifouling/underwater coatings, coatings, and biocide-containing paints, etc., can solve the problem of lack of long-term antibacterial effect, achieve good stability and reduce odor problems. Effect

Active Publication Date: 2022-01-25
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, from the results of laboratory tests, these commercially available air conditioner cleaning agents basically do not have long-lasting antibacterial effects.

Method used

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  • Coating composition with long-term antimicrobial properties
  • Coating composition with long-term antimicrobial properties
  • Coating composition with long-term antimicrobial properties

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0043] There is no particular limitation on the type and source of the quaternary ammonium salt, which can be purchased commercially or prepared according to known synthesis methods, as long as it can provide good bactericidal effect and surface active effect. The commercially available products of the quaternary ammonium salt bactericide that can be adopted include: C8-C16 quaternary ammonium salt Bardac 208M produced by Lonza (China) Investment Co., Ltd.; and quaternary ammonium salt Tomamine Q-C-15 produced by Air Chemical Company; Bardac 208M is a mixture of didecyl / dioctyldimethylammonium chloride (number average molecular weight 522, CAS 68424-95-3) and benzalkonium chloride (number average molecular weight 354, CAS 68424-85-1), The average molecular weight is 460.

[0044] The inventors found that silica nanoparticles can provide good superhydrophilic effect in application. However, the surface tension of the aqueous solution of silica nanoparticles is very high, and i...

Embodiment 1

[0087] Nalco 8699 (15.5% by weight solid content and 2 nm average particle size) and Nalco 1050 (50% by weight solid content and 20 nm average particle size) in a weight ratio of 7:3 were mixed to obtain silica nano Aqueous dispersion of particles. The silica nanoparticle aqueous dispersion, quaternary ammonium salt Tomamine Q-C-15, fatty alcohol polyoxyethylene ether modified silicone surfactant 3259, ethanol and deionized water were mixed and fully stirred to obtain a coating composition , wherein based on the total weight of the coating composition, the silica nanoparticles in the aqueous dispersion of silica nanoparticles account for 0.1% by weight, and the quaternary ammonium salt Tomamine Q-C-15 accounts for 5.0% by weight, so The fatty alcohol polyoxyethylene ether modified silicone surfactant 3259 accounts for 2.0% by weight, the ethanol accounts for 20% by weight, and water accounts for 72.9% by weight (the water content includes the content of the deionized water and...

Embodiment 2-11 and comparative example 1-3

[0089] A coating composition was prepared in the same manner as in Example 1 except that the presence or absence and the content of each component were changed according to the data shown in Table 1 below.

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Abstract

The present invention provides a coating composition with long-term antibacterial properties, the coating composition comprises: 0.1-1% by weight of silicon dioxide nanoparticles; 0.2-10% by weight of quaternary ammonium salt; 20% by weight of fatty alcohol polyoxyethylene ether or fatty alcohol polyoxyethylene ether modified silicone surfactant; and 70‑95% by weight of solvent. The coating compositions according to the invention are capable of forming well-spreading coatings with long-term antimicrobial properties on substrates.

Description

technical field [0001] The invention relates to a coating composition, in particular to a coating composition with long-term antibacterial properties. Background technique [0002] Bacteria is an important cause of odor in air conditioners. Most of the air conditioner evaporator cleaning agents currently on the market claim to have a bactericidal effect. However, from the results of laboratory tests, these commercially available air conditioner cleaning agents basically do not have long-lasting antibacterial effects. Therefore, it is necessary to develop a kind of long-acting antibacterial air-conditioning cleaning products, thereby reducing the peculiar smell problem of air-conditioning due to the growth of bacteria. Contents of the invention [0003] Starting from the above-mentioned technical problems, the purpose of the present invention is to provide a coating composition that can be used as an air conditioner evaporator cleaning agent. In addition to providing the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/14C09D7/61C09D7/65
CPCC09D5/14C09D7/61C09D7/65
Inventor 霍鑫姚银芳孙杜茵子银龙王卫峰李宇史志宇李建国
Owner 3M INNOVATIVE PROPERTIES CO
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