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Dissolution-resistant guanidine antibacterial agent and preparation method thereof

An antibacterial agent and solvent-resistant technology, which is applied in the field of dissolution-resistant guanidine salt antibacterial agent and its preparation, can solve the problems of easy loss of molecular antibacterial materials, achieve long-term and lasting killing and inhibition, increase loss resistance, and prepare The effect of simple process

Pending Publication Date: 2020-07-10
安阳崇高纳米材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the guanidinium salt polymer antibacterial material is easy to lose under the condition of the aqueous system, the object of the present invention is to provide a kind of dissolution-resistant guanidine salt antibacterial agent and its preparation method, using anionic sodium salt containing polar groups Or potassium salt compound, graft reaction with guanidine salt to prepare a dissolution-resistant polymer antibacterial material, which can be widely used in the preparation of antibacterial PP, PE and TPU medium products by extrusion

Method used

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  • Dissolution-resistant guanidine antibacterial agent and preparation method thereof
  • Dissolution-resistant guanidine antibacterial agent and preparation method thereof
  • Dissolution-resistant guanidine antibacterial agent and preparation method thereof

Examples

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Effect test

Embodiment 1

[0025] A preparation method of dissolution-resistant guanidine salt antibacterial agent, comprising the steps of:

[0026] (1) At room temperature, 25 parts by weight of polyhexamethylene monoguanidine hydrochloride was stirred and dissolved in 100 parts by weight of the first solvent distilled water, and the guanidine salt solution was obtained after stirring and dissolving completely;

[0027] (2) at room temperature, 26 parts by weight of sodium benzoate are dissolved in 50 parts by weight of the second solvent distilled water, and the sodium benzoate solution is obtained after stirring and dissolving completely;

[0028] (3) Under stirring at 500rpm, the sodium benzoate solution was added dropwise to the guanidinium salt solution, the reaction temperature was controlled to be 60° C., and the stirring reaction was continued for 3 hours. After cooling, a white viscous product insoluble in water was obtained. , dried at 180°C, ground, and finally obtained a dissolution-resist...

Embodiment 2

[0030] A preparation method of dissolution-resistant guanidine salt antibacterial agent, comprising the steps of:

[0031] (1) At room temperature, 25 parts by weight of polyhexamethylene monoguanidine hydrochloride was stirred and dissolved in 100 parts by weight of the first solvent distilled water, and the guanidinium salt solution was obtained after stirring and dissolving completely;

[0032] (2) at room temperature, 30 parts by weight of potassium sorbate are dissolved in 50 parts by weight of the second solvent distilled water, and the potassium sorbate solution is obtained after stirring and dissolving completely;

[0033] (3) Under the stirring state of 500rpm, the potassium sorbate solution is added dropwise to the guanidine salt solution, the reaction temperature is controlled at 60°C, and the stirring reaction is continued for 3h, and a white viscous insoluble water is obtained after cooling. The product was dried at 180°C and ground to obtain a dissolution-resista...

Embodiment 3

[0035] A preparation method of dissolution-resistant guanidine salt antibacterial agent, comprising the steps of:

[0036] (1) At room temperature, 25 parts by weight of polyhexamethylene biguanide hydrochloride was stirred and dissolved in 100 parts by weight of the first solvent distilled water, and the guanidinium salt solution was obtained after stirring and dissolving completely;

[0037] (2) at room temperature, 26 parts by weight of sodium benzoate are dissolved in 50 parts by weight of the second solvent distilled water, and the sodium benzoate solution is obtained after stirring and dissolving completely;

[0038](3) Under stirring at 500rpm, the sodium benzoate solution was added dropwise to the guanidinium salt solution, the reaction temperature was controlled to be 60° C., the stirring reaction was continued for 3 hours, and a white viscous product insoluble in water was obtained after cooling , dried at 180°C, ground, and finally obtained a dissolution-resistant g...

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Abstract

The invention relates to a dissolution-resistant guanidine antibacterial agent and a preparation method thereof. The preparation method comprises the following specific steps: preparing any one or a mixture of two of polyhexamethylene guanidine hydrochloride and polyhexamethylene biguanidine hydrochloride into a guanidine salt solution with a certain concentration, adding an organic acid salt sodium salt or potassium salt into the guanidine salt solution, and reacting for a period of time to obtain a water-insoluble product; and washing the product, drying, grinding and crushing to obtain thepowdery dissolution-resistant guanidine antibacterial agent. The dissolution-resistant guanidine antibacterial agent prepared by the method has a relatively good long-acting antibacterial effect and is simple in preparation process, green and environment-friendly and is suitable for industrial production and can be widely applied to TPU, PP, PE and other high polymer materials.

Description

technical field [0001] The invention relates to the technical field of thermoplastic materials, in particular to a dissolution-resistant guanidine salt antibacterial agent and a preparation method thereof. Background technique [0002] At present, antibacterial plastic products have been widely used in Japan and developed countries in Europe and America, and China's antibacterial plastic products have also developed rapidly in recent years. Among them, inorganic antibacterial agents, organic antibacterial agents, inorganic and organic composite antibacterial agents, natural antibacterial agents and polymer antibacterial agents have been applied to a certain extent in various fields of people's livelihood, but their use in the field of plastics has been limited. degree of limitation. Among them, natural antibacterial agents have good safety performance, but they are not resistant to high temperature and cannot meet the processing requirements of plastic products. In additio...

Claims

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Application Information

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IPC IPC(8): C08G73/00C08L23/12C08L23/06C08L75/04C08L79/00
CPCC08G73/00C08L23/12C08L23/06C08L75/04C08L2207/04C08L79/00
Inventor 李燕新吕朋宇李毕忠彭红芳封东廷楚蕊
Owner 安阳崇高纳米材料科技有限公司
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