Pet insect repellent spray and preparation method thereof
A technology for pets and spray bottles, applied in drug combination, drug delivery, medical formula, etc., can solve the problem of reducing the long-term killing effect of shampoo parasites, and achieve the effect of improving the killing effect
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preparation example 1
[0045] S1, take by weight chitosan 20kg, 1,2-ethylene oxide 400kg;
[0046] S2, add 150kg of 50wt% sodium hydroxide solution to the chitosan weighed in step S1, stir at room temperature for 40min at a stirring rate of 200r / min, and carry out an alkalization reaction; filter after 24h and remove the lower layer sediment and rinse with distilled water 3 times to obtain solution A;
[0047] S3, adding 400kg of 50wt% isopropanol solution to the prepared solution A prepared in step S2, stirring at room temperature with a stirring rate of 200 r / min for 30 min, and stirring evenly to prepare solution B;
[0048] S4. Add 400kg of 1,2-oxirane to the solution B prepared in step S3, and react at a constant temperature of 60°C for 12h, then use a 5% hydrochloric acid solution to adjust the pH to neutrality and the solution is completely dissolved into a transparent state to obtain solution C;
[0049] S5, the solution C prepared in step S4 is dialyzed through distilled water for 3d, dur...
preparation example 2
[0053] S1, weigh 27.5kg of chitosan and 450kg of 1,2-ethylene oxide;
[0054] S2. Add 175kg of 50wt% sodium hydroxide solution to the chitosan taken in step S1, stir at room temperature for 50min at a stirring rate of 200r / min, and carry out alkalization reaction; filter after 24h and remove the lower layer sediment and rinse with distilled water 3 times to obtain solution A;
[0055] S3, adding 450kg of 50wt% isopropanol solution to the prepared solution A prepared in step S2, stirring at room temperature with a stirring rate of 200r / min for 35min, stirring evenly, to prepare solution B;
[0056] S4. Add 450 kg of 1,2-oxirane to the solution B prepared in step S3, and react at a constant temperature of 60°C for 13.5 h, then use 5% hydrochloric acid solution to adjust the pH to neutrality and the solution is completely Dissolved into a transparent state to obtain solution C;
[0057] S5, the solution C prepared in step S4 is dialyzed through distilled water for 4d, during wh...
preparation example 3
[0061] S1, take by weight chitosan 35kg, 1,2-oxirane 500kg;
[0062] S2, add 200kg 50wt% sodium hydroxide solution to the chitosan weighed in step S1, stir at room temperature for 60min at a stirring rate of 200r / min, and carry out an alkalization reaction; filter after 24h and remove the lower layer of sediment and rinse with distilled water 3 times to obtain solution A;
[0063] S3, adding 500kg of 50wt% isopropanol solution to the prepared solution A prepared in step S2, stirring at room temperature with a stirring rate of 200 r / min for 40 min, and stirring evenly to prepare solution B;
[0064] S4. Add 500kg of 1,2-oxirane to the solution B prepared in step S3, and react at a constant temperature of 60°C for 15h, then use a 5% hydrochloric acid solution to adjust the pH to neutrality and the solution is completely dissolved into a transparent state to obtain solution C;
[0065] S5, the solution C prepared in step S4 is dialyzed through distilled water for 5d, during whi...
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