Antibiosis and corrosion prevention composition containing colloidal silver and preparation method thereof
An antibacterial and antiseptic, colloidal silver technology, applied in botanical equipment and methods, medical preparations containing active ingredients, preparations for skin care, etc. , to achieve a wide range of applications, good antiseptic effect, fast antibacterial effect
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[0026] Preferably, the preparation method of colloidal silver includes the following steps: divide the reducing agent into two parts equally, one part is stirred and mixed with the stabilizer to obtain the mixture A, and the other part is stirred and mixed with the silver salt to obtain the mixture B. Add mixture A to 120-150°C and keep constant temperature, add mixture B and stir well to mix evenly, react for 0.8-1.5h, and cool to room temperature. Ultrasonic dispersion is used for 10-20 minutes, and the colloidal silver is obtained by standing still.
[0027] Preferably, the particle size of the colloidal silver is 1-50nm.
[0028] Further preferably, the particle size of the colloidal silver is 2-20nm.
[0029] Antiseptic ingredients
[0030] The antiseptic component can not only play an antiseptic effect, but also cooperate with the colloidal silver in the system to enhance the broad-spectrum antibacterial properties of the antiseptic composition.
[0031] Preferably,...
Embodiment 1
[0058] An antibacterial and antiseptic composition containing colloidal silver, comprising colloidal silver, antiseptic components and a dispersing agent in parts by weight. The weight ratio of the colloidal silver, anticorrosion component and dispersant is 3:5:10.
[0059] The raw materials for the preparation of the colloidal silver include silver salt, reducing agent and stabilizer.
[0060] The silver salt is silver nitrate. The reducing agent is ethylene glycol. The stabilizer is polyvinylpyrrolidone. The weight-average molecular weight of the polyvinylpyrrolidone is 152,000. The polyvinylpyrrolidone is purchased from Gobekie Company, brand name: PVPK45.
[0061] The weight ratio of the silver salt to the stabilizer is 3.5:6.5.
[0062] The preparation method of the colloidal silver comprises the following steps: divide 200 parts of reducing agent into two parts on average, one part is stirred and mixed with 0.65 parts of stabilizer to obtain mixture A, and the other...
Embodiment 2
[0071] An antibacterial and antiseptic composition containing colloidal silver, the specific implementation method is the same as that of Example 1, except that the antiseptic components include organic acids and their salts and ester antiseptic components. The weight ratio of the organic acid and its salt antiseptic components to the ester antiseptic components is 8:5. The organic acid and its salt antiseptic ingredients are caprylyl hydroxamic acid (CAS No.: 7377-3-9); the ester antiseptic ingredients are glyceryl caprylate (CAS No.: 26402-26-6).
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Abstract
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