Preparation method and application of organic/inorganic compound antibacterial agent

An inorganic composite and antibacterial agent technology, which is applied in the field of antibacterial agents, can solve the problems of high cost of antibacterial agents and added products, inability to promote large-scale application, and difficulty in removing organic matter, so as to improve antibacterial effect, reduce activity, and reduce rapid precipitation Effect

Inactive Publication Date: 2014-11-26
ANHUI WANXING IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, antibacterial tableware in restaurants cannot be reused after washing on the same day, and long-acting and quick-acting cannot be combined; silver-containing antibacterial agents are difficult to remove organic matter, and powdered silver-containing antibacterial agents are difficult to kill and inhibit fungi in the air, especially for fungi. The effect is not good; if silver-containing antibacterial agents are added to the raw materials, the processing temperature of the product is limited. After exceeding 800°C, the silver in them will be oxidized; the raw materials of antibacterial agents contain silver, and the processing technology is more complicated. The cost of the product is high, and it is easy to change color, so it cannot be popularized and applied on a large scale

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) material preparation: prepare silver nitrate and zinc nitrate, and its mol ratio is 0.01:0.3;

[0034] (2) Equipped with ion exchange liquid: add water to silver nitrate and zinc nitrate respectively to form a solution, then mix silver salt solution and 1 / 2 zinc nitrate solution to prepare ion exchange liquid, so that the concentration of silver nitrate solution in the ion exchange liquid is 0.01 mol / L, the concentration of zinc nitrate solution is 0.15mol / L;

[0035] (3) Will After the artificial zeolite is heated, dehydrated, and expanded, it is added to the ion exchange liquid for the first ion exchange. The mass ratio of artificial zeolite to ion exchange liquid is 50%, and then solid-liquid separation obtains a filter cake;

[0036] (4) add powdery triclosan and filter cake in remaining zinc salt solution, make wherein the concentration of triclosan is 1mol / L, stir and carry out ion exchange for the second time, then solid-liquid separation obtains secondary ...

Embodiment 2

[0039] (1) material preparation: prepare silver nitrate and copper nitrate, and its mol ratio is 0.05:2;

[0040] (2) Equipped with ion exchange liquid: add water to silver nitrate and copper nitrate respectively to form a solution, then mix silver nitrate solution and 1 / 2 copper nitrate solution to prepare ion exchange liquid, so that the concentration of silver nitrate solution in the ion exchange liquid is 0.05 mol / L, the concentration of copper nitrate solution is 1mol / L;

[0041] (3) Add B-type silica gel to the ion-exchange liquid after heating, dehydration, and expansion treatment, and perform the first ion exchange. The mass ratio of B-type silica gel to the ion-exchange liquid is 60%, and then the solid-liquid separation obtains a filter cake ;

[0042] (4) Add powdery trichlorosine and filter cake to the remaining copper salt solution, so that the concentration of trichlorosine is 0.1mol / L, stir for the second ion exchange, and then separate solid-liquid to obtain t...

Embodiment 3

[0046] First prepare PE antibacterial masterbatch. Main raw material: PE 25Kg (LDPE with a melt index of 60-70).

[0047] Auxiliary material: dispersant (stearic acid) 2Kg; Coupling agent 350g; Silver-containing antimicrobial agent of embodiment 1: 6Kg, first with 100-300 ℃ of drying 8-24 hours (standby), to remove moisture and be convenient to disperse.

[0048] Specific method: After mixing the above-mentioned ingredients evenly, use a twin-screw granulator to extract air and granulate. Refer to the processing standards and methods of color masterbatch and filler masterbatch.

[0049] Take 10kg of antibacterial masterbatch, 0.5kg of commercially available white masterbatch, and 85kg of PE. After being dried separately, the antibacterial chopping boards are produced using traditional equipment and methods.

[0050] Take 5×10 according to the “Technical Specifications for Disinfection” 6 -5×10 7 Add 0.5ml of bacterial solution dropwise to the antibacterial chopping board ...

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PUM

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Abstract

The invention discloses a method for preparing an organic / inorganic compound antibacterial agent. The preparation method comprises the following step: compounding an inorganic silver-containing antibacterial agent with triclosan by adopting an ion exchange method. The compound antibacterial agent can simultaneously have antibacterial long-lasting and quick-acting functions, can be used for solving the problem that color of a conventional antibacterial agent easily changes and is simple in process and low in cost.

Description

technical field [0001] The invention relates to an antibacterial agent, in particular to a preparation method and application of an organic / inorganic composite antibacterial agent. Background technique [0002] Although the silver-containing powdery antimicrobial agents commonly used in the current society have many advantages in production and use, their defects are also obvious. Although the antibacterial agent has the characteristics of long-acting and slow-release, it cannot be quick-acting. Experiments have shown that the antibacterial effect of products using this type of antibacterial agent is limited within 4-8 hours. For example, antibacterial tableware in restaurants cannot be reused after washing on the same day, and long-acting and quick-acting cannot be combined; silver-containing antibacterial agents are difficult to remove organic matter, and powdered silver-containing antibacterial agents are difficult to kill fungi in the air, especially for fungi. The eff...

Claims

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Application Information

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IPC IPC(8): A01N59/16A01N59/20A01P1/00A01P3/00A01P13/00C09D5/14C04B41/86A47J47/00C08L23/06A01N31/16
Inventor 蔡惠萍田树霖
Owner ANHUI WANXING IND LTD
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