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Quaternary ammonium salt antibacterial agent and structural type antibacterial resin

A quaternary ammonium salt and antibacterial agent technology, applied in the field of antibacterial coatings, can solve the problems of uneven dispersion, attenuation of antibacterial properties of antibacterial coatings, loss of antibacterial properties, etc., to achieve more stable antibacterial properties, stable antibacterial properties, and simple and easy control of the preparation process. Effect

Inactive Publication Date: 2015-12-16
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the uneven dispersion, migration, degradation, and discoloration of the added antibacterial agent in the coating film, the antibacterial performance of the antibacterial coating is attenuated, or even lost, and its application has great limitations.

Method used

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  • Quaternary ammonium salt antibacterial agent and structural type antibacterial resin
  • Quaternary ammonium salt antibacterial agent and structural type antibacterial resin
  • Quaternary ammonium salt antibacterial agent and structural type antibacterial resin

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Embodiment 1 quaternary ammonium salt antibacterial agent

[0028] A kind of quaternary ammonium antibacterial agent of the present embodiment, its preparation method is as follows:

[0029] According to the ratio of dimethylaminoethyl methacrylate (DMAEMA):bromotetradecane molar ratio=1:1.1, weigh dimethylaminoethyl methacrylate (DMAEMA) and bromotetradecane In a three-necked flask equipped with a mechanical stirrer, a reflux condenser, and a thermometer, heat the reaction under reflux in an oil bath, the reaction temperature is 110°C, and prepare tetradecyl ethyl methacrylate dimethyl bromide after 110 minutes of reaction Ammonium, the tetradecyl ethyl methacrylate dimethyl ammonium bromide is the quaternary ammonium salt antibacterial agent of the present embodiment.

[0030] The conversion rate of the quaternary ammonium salt antibacterial agent in this embodiment is 97%, and its reaction equation is shown in formula (I).

[0031]

Embodiment 2

[0032] The antibacterial performance experiment of embodiment 2 quaternary ammonium salt antibacterial agent

[0033] In this example, the quaternary ammonium salt antibacterial agent prepared in Example 1 was tested for its antibacterial properties.

[0034] Experimental method: According to the relevant guidelines of the 2002 version of the "Disinfection Technical Specifications" of the Ministry of Health, the minimum inhibitory concentration (MIC) of quaternary ammonium antibacterial agents can be tested according to the "Agar Dilution Method" in the specifications. Mix a certain gradient concentration of quaternary ammonium salt antibacterial agent solution with a certain concentration of bacterial suspension, dissolve evenly in the agar medium, place it in a constant temperature incubator for 24 hours, and observe the growth of the bacteria to determine the antibacterial effect of the quaternary ammonium salt. The lowest concentration at which the agent inhibits the growt...

Embodiment 3

[0053] Embodiment 3 structural type antibacterial resin

[0054] This embodiment prepares 6 kinds of structural type antibacterial resins altogether, these 6 kinds of structural type antibacterial resins all adopt the quaternary ammonium salt antibacterial agent prepared in embodiment 1, and these 6 kinds of structural type antibacterial resins are different except the addition amount of quaternary ammonium salt antibacterial agent Except, all the other preparation methods are the same, and the specific preparation method is as follows:

[0055] In a 250mL three-necked flask, add 32.85g of solvent propylene glycol methyl ether acetate and stir and heat up to 90°C, dropwise add the mixture of monomer, quaternary ammonium salt antibacterial agent and initiator azobisisobutyronitrile, and the dropping process controls the temperature to 88°C~93°C, the dropping time is 1.5~2.0 hours, add the initiator azobisisobutyronitrile after the dropwise addition, then control the temperature...

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Abstract

The invention discloses a quaternary ammonium salt antibacterial agent and structural type antibacterial resin. The quaternary ammonium salt antibacterial agent is prepared from dimethylaminoethyl methacrylate and bromotetradecane, which are in the mole ratio of 1: 11, through reacting for 110 minutes at the temperature of 110 DEG C. A preparation process for the quaternary ammonium salt antibacterial agent disclosed by the invention is simple and easy to control, the cost of raw materials is low, and the quaternary ammonium salt antibacterial agent has a very good antibacterial effect on both Escherichia coli and Staphylococcus aureus; and the structural type antibacterial resin prepared from the quaternary ammonium salt antibacterial agent and monomers also has a very good antibacterial effect on both Escherichia coli and Staphylococcus aureus, and the antibacterial performance of the structural type antibacterial resin can reach a level-I antibacterial effect.

Description

technical field [0001] The invention relates to the technical field of antibacterial coatings, in particular to a quaternary ammonium salt antibacterial agent and a structural antibacterial resin prepared from the quaternary ammonium salt antibacterial agent. Background technique [0002] As human beings pay more attention to their own health, people's awareness of environmental protection is also increasing. For a long time, there are a large number of microorganisms in the living environment of human beings, which not only cause great harm to humans, animals and plants, but also cause the decomposition, deterioration, deterioration and corruption of various materials. As an important chemical building material, coatings are of great significance for improving their functions, especially antibacterial properties. [0003] Traditional antibacterial coatings are additive antibacterial coatings, which are made by adding an antibacterial agent that has antibacterial function a...

Claims

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Application Information

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IPC IPC(8): A01N37/06A01P1/00C07C213/02C07C219/08C08F220/28C08F220/14C08F212/08C08F220/18C08F220/34C08K5/19
Inventor 郑成黄颖红毛桃嫣
Owner GUANGZHOU UNIVERSITY
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