Tobacco sweetened cooling agent sustained release capsules for filter sticks
A slow-release capsule and cooling agent technology, applied in the application, tobacco, e-liquid filter and other directions, can solve the problems of the effect of cigarette flavoring effect, loss and other problems, and achieve the effects of easy promotion and application, smoke coordination, and simple equipment.
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Embodiment 1
[0019] Dissolve 6g of menthone in a mixed solvent (2:3) composed of 50mL of absolute ethanol and benzene, add 20g of anhydrous sodium carbonate; weigh 4g of hydroxylamine hydrochloride, dissolve in 50mL of ethanol, and gradually Add it dropwise to the menthone solution, reflux for 4 hours after the addition, filter after cooling, and recover the solvent (5.33KPa) by vacuum distillation to obtain about 3.5 g of the crude menthone oxime, which is recrystallized in absolute ethanol solution and further purified to obtain white crystals .
[0020] Add sodium amide and liquid ammonia (cooled by liquid nitrogen and acetone bath) into a 500mL dry three-necked flask, drop the mixture of propionitrile and 2-bromopropane (3:4) into the flask, and keep the temperature to continue the reaction a period of time. After the reaction is over, allow it to heat up naturally, and after all the liquid ammonia has volatilized, add a small amount of water to quench the reaction. An appropriate am...
Embodiment 2
[0026] Dissolve 6g of menthone in a mixed solvent (2:3) composed of 50mL of absolute ethanol and benzene, add 20g of anhydrous sodium carbonate; weigh 4g of hydroxylamine hydrochloride, dissolve in 50mL of ethanol, and gradually Add it dropwise to the menthone solution, reflux for 4 hours after the addition, filter after cooling, and recover the solvent (5.33KPa) by vacuum distillation to obtain about 3.5 g of the crude menthone oxime, which is recrystallized in absolute ethanol solution and further purified to obtain white crystals .
[0027] Add sodium amide and liquid ammonia (cooled by liquid nitrogen and acetone bath) into a 500mL dry three-necked flask, drop the mixture of propionitrile and 2-bromopropane (3:4) into the flask, and keep the temperature to continue the reaction a period of time. After the reaction is over, allow it to heat up naturally, and after all the liquid ammonia has volatilized, add a small amount of water to quench the reaction. An appropriate am...
Embodiment 3
[0033] Dissolve 6g of menthone in a mixed solvent (2:3) composed of 50mL of absolute ethanol and benzene, add 20g of anhydrous sodium carbonate; weigh 4g of hydroxylamine hydrochloride, dissolve in 50mL of ethanol, and gradually Add it dropwise to the menthone solution, reflux for 4 hours after the addition, filter after cooling, and recover the solvent (5.33KPa) by vacuum distillation to obtain about 3.5 g of the crude menthone oxime, which is recrystallized in absolute ethanol solution and further purified to obtain white crystals .
[0034] Add sodium amide and liquid ammonia (cooled by liquid nitrogen and acetone bath) into a 500mL dry three-necked flask, drop the mixture of propionitrile and 2-bromopropane (3:4) into the flask, and keep the temperature to continue the reaction a period of time. After the reaction is over, allow it to heat up naturally, and after all the liquid ammonia has volatilized, add a small amount of water to quench the reaction. An appropriate am...
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