Sustained-release pellet capsule of sweet cooling agent for cigarette with filter plug
A slow-release capsule and cooling agent technology, which is applied in the fields of application, tobacco, and e-liquid filter elements, can solve problems such as loss and influence of cigarette flavoring effects, and achieve the effects of smoke coordination, easy promotion and application, 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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