Method for producing polyurothane antibiotic aromatic micro-capsule
A technology of microcapsules and polyurethane, applied in the direction of microcapsule preparation, preparation of microspheres, botanical equipment and methods, etc., can solve the problems of low slow release, bacteria breeding, failure, etc., and achieve high and strong aroma slow release Antibacterial ability, easy processing effect
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Example Embodiment
[0019] Example 1:
[0020] 1. Material preparation
[0021] Oil phase: IPDI3.33g, jasmine essence 19g, silver-loaded silica 1g, cyclohexane: 25ml.
[0022] Aqueous phase: NaOH (15%) 2ml, deionized water 200ml, sodium alginate 0.3g.
[0023] 3.0g polyethylene glycol with a molecular weight of 600.
[0024] 2. Preparation process
[0025] a. Dissolve 0.3g of sodium alginate with 200ml of deionized water under high-speed stirring according to the above ratio.
[0026] b. Mix the oil phase, polyethylene glycol and 40ml of acetone, add them dropwise to the water phase at 50°C and a stirring speed of 500 rpm, and finish the dripping in 2 hours.
[0027] c. Raise the temperature to 60°C and continue the reaction for 1.5 hours,
[0028] d. Suction filtration and washing of the crude product,
[0029] e. Vacuum to remove acetone and cyclohexane. The product is a white emulsion.
Example Embodiment
[0030] Example 2:
[0031] 1. Material preparation
[0032] Oil phase: HDI: 4.12g, peppermint flavor 19g, silver-loaded titanium oxide 1.5g, cyclohexane 25ml
[0033] Water phase: NaOH (15%) 2ml, deionized water: 200ml, sodium alginate: 0.3g molecular weight 400 polyethylene glycol 3.0g,
[0034] 2. Preparation method
[0035] a. Dissolve 0.3g of sodium alginate with 200ml of deionized water under high-speed stirring according to the above ratio.
[0036] b. Mix the oil phase, polyethylene glycol and 50ml of acetone, add dropwise to the water phase at 50°C and a stirring speed of 600 rpm, and finish the dripping in 1.5 hours.
[0037] c. Raise the temperature to 60°C and continue the reaction for 1 hour,
[0038] d. Suction filtration and washing of the crude product,
[0039] e. Vacuum to remove acetone and cyclohexane. The product is a white emulsion.
Example Embodiment
[0040] Example 3:
[0041] 1. Material preparation
[0042] Oil phase: TDI 3.90g, lavender flavor 19g, zinc-loaded silica 2g, cyclohexane 25ml.
[0043] Aqueous phase: NaOH (15%) 2ml, deionized water: 200ml, sodium alginate: 0.3g.
[0044] 3.0g polyethylene glycol with a molecular weight of 800.
[0045] 2. Preparation method
[0046] a. Dissolve 0.3g of sodium alginate with 200ml of deionized water under high-speed stirring according to the above ratio.
[0047] b. Mix the oil phase, polyethylene glycol and 60ml of acetone, add them dropwise to the water phase at 60°C and a stirring speed of 600 rpm, and finish the dripping in 1.5 hours.
[0048] c. Raise the temperature to 70°C and continue the reaction for 1 hour,
[0049] d. Suction filtration and washing of the crude product,
[0050] e. Vacuum to remove acetone and cyclohexane. The product is a white emulsion.
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