Microcapsule containing dimethyl phthalate, mosquito repellent water and preparation method thereof
A technology of microcapsules and mosquito repellent, applied in the field of microcapsules containing mosquito repellent, mosquito repellent water and its preparation, can solve the problem of non-renewability and biodegradability, non-compliance with the principle of sustainable development, unsuitable Mosquito repellent water and other problems, to achieve the effect of prolonging the effective time of repelling mosquitoes, reducing adverse reactions, and lasting mosquito repellent effect
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Embodiment 1
[0038] 1. Preparation of microcapsules: Add 4g mosquito repellent ester to 20mL chitosan acetate solution with a mass concentration of 0.4g / mL, stir well at room temperature for 2h to dissolve completely, and then add 10mL mass concentration of 0.4g / mL The γ-polyglutamic acid solution in mL was continuously stirred for 2 hours, then centrifuged at 20,000 rpm for 30 minutes, the supernatant was removed, the resulting precipitate was washed with water several times, and finally freeze-dried.
[0039] 2. Mosquito repellent water containing mosquito repellent microcapsules:
[0040] Each ingredient is composed of the following raw materials in mass percentage: mosquito repellent ester microcapsules 25%, propylene glycol 20%, polyethylene glycol 2%, hyaluronic acid 5%, aloe extract 2%, rose hydrosol 0.5%, deionized water make up.
[0041]The preparation method is: mix propylene glycol, polyethylene glycol and water evenly, heat at 70°C, stir until completely dissolved, and cool to...
Embodiment 2
[0043] 1. Preparation of microcapsules: Add 7g of mosquito repellent to 40mL chitosan acetate solution with a mass concentration of 0.4g / mL, fully stir at room temperature for 3h to dissolve completely, and then add 30mL with a mass concentration of 0.4g / mL The γ-polyglutamic acid solution in mL was continuously stirred for 3 hours, then centrifuged at 20,000 rpm for 30 minutes, the supernatant was removed, the resulting precipitate was washed with water several times, and finally freeze-dried.
[0044] 2. Mosquito repellent water containing mosquito repellent microcapsules:
[0045] Each ingredient is composed of the following raw materials in mass percentage: Mosquito repellent microcapsules 20%, propylene glycol 15%, polyethylene glycol 1.3%, hyaluronic acid 7%, aloe extract 3.5%, rose hydrosol 0.7%, deionized water make up.
[0046] The preparation method is as follows: mix propylene glycol, polyethylene glycol and water evenly, heat at 80°C, stir until completely dissolv...
Embodiment 3
[0048] 1. Preparation of microcapsules: Add 10g of mosquito repellent ester to 60mL of chitosan acetate solution with a mass concentration of 0.4g / mL, fully stir at room temperature for 4h to completely dissolve, and then add 50mL of a mass concentration of 0.4g / mL The γ-polyglutamic acid solution in mL was continuously stirred for 4 hours, then centrifuged at 20,000 rpm for 30 minutes, the supernatant was removed, the resulting precipitate was washed with water several times, and finally freeze-dried.
[0049] 2. Mosquito repellent water containing mosquito repellent microcapsules:
[0050] Each ingredient is composed of the following raw materials by mass percentage: mosquito repellent ester microcapsules 15%, propylene glycol 18%, polyethylene glycol 0.5%, hyaluronic acid 3%, aloe extract 5%, rose hydrosol 0.3%, deionized water make up.
[0051] The preparation method is: mix propylene glycol, polyethylene glycol and water evenly, heat at 75°C, stir until completely dissol...
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