Bacteriostatic and easy-to-wash foam hand sanitizer and preparation method thereof
A hand sanitizer and easy-to-rinse technology, applied in the field of daily chemical cleaning products, can solve the problems of increasing the difficulty of the preparation process, poor mold inhibitory effect, and poor bacteriostatic spectrum of the hand sanitizer, achieving good cleaning effect, fine and rich foam, Broad antibacterial spectrum
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Embodiment 1
[0024] The preparation of acylated catechin in this embodiment comprises the following steps:
[0025] Weigh 250g of epigallocatechin gallate and dissolve it in 1L of water to obtain solution I; weigh 100g of deoxyacetic acid and dissolve it in 0.25L of ethanol to obtain solution II; mix solution I and solution II and add 1g of p-toluenesulfonic acid, Stir and mix well, and react at 100°C for 4 hours under the protection of nitrogen. After the reaction, 3 times the volume of ether is added to the system for extraction. After the ether phase is repeatedly washed with water for 3 times, it is concentrated and dried at low temperature to obtain acylated catechin.
Embodiment 2
[0027] The preparation of acylated catechin in this embodiment comprises the following steps:
[0028] Weigh 300g of epigallocatechin gallate and dissolve it in 1L of water to obtain solution I; weigh 100g of deoxyacetic acid and dissolve it in 0.25L of ethanol to obtain solution II; mix solution I and solution II and add 5g of p-toluenesulfonic acid, Stir and mix well, and react at 80°C for 5 hours under the protection of nitrogen. After the reaction, add 4 times the volume of ether to the system for extraction, wash the ether phase with water for 4 times, concentrate and dry at low temperature to obtain acylated catechin.
Embodiment 3
[0030] The preparation of acylated catechin in this embodiment comprises the following steps:
[0031] Weigh 280g of epigallocatechin gallate and dissolve it in 1L of water to obtain solution I; weigh 100g of deoxyacetic acid and dissolve it in 0.25L of ethanol to obtain solution II; mix solution I and solution II and add 3g of p-toluenesulfonic acid, Stir and mix well, and react at 100°C for 4 hours under the protection of nitrogen. After the reaction, add 5 times the volume of ether to the system for extraction. After the ether phase is repeatedly washed with water for 4 times, it is concentrated and dried at low temperature to obtain acylated catechin.
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