- Micro-continuous flow technology for producing tonalide
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The invention discloses a micro-continuous flow technology for producing tonalide. The technology taking 1,1,3,4,4,6-hexamethyltetrahydronaphthalene (HMT) and acetyl chloride as raw materials, anhydrous aluminum chloride as a catalyst and dichloroethane and other organic matters as a solvent comprises the following steps: mixing the anhydrous aluminum chloride, the solvent and acetyl chloride under a low-temperature condition to obtain a catalyst phase; mixing and dissolving the raw material HMT with the solvent to obtain a raw material phase; respectively pre-cooling the raw material phase and the catalyst phase, and introducing the pre-cooled raw material phase and catalyst phase into a micro-channel reactor, and performing a reaction; and finally, introducing the obtained reaction product into a microstructure mixing module, quenching and layering the obtained reaction product, and then carrying out extraction, rotary evaporation, recrystallization and drying to obtain the tonalide.The micro-continuous flow technology has the advantages of short retention time, continuousness in operation, increase of the production efficiency of the product, improvement of the production safety and the product yield by timely removing heat in the reaction process, and reduction of the risk of the quenching process by timely removing heat in the quenching process.
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Paragraph 0023-0036
(2020/04/17)
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- PERFUME COMPOSITIONS
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Perfume ingredients have been investigated and classified for their effectiveness in detaching biofilms from surfaces. Based on this classification, perfume compositions that are effective in assisting biofilm detachment can be formulated, whilst also allowing a degree of freedom in formulation that permits consideration of the hedonic properties of the composition. The compositions can be used in a wide range of perfumed consumer products, such as personal, domestic and industrial products, e.g. hard surface cleaning products, dental care products, and deodorant products.
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