Fragrance purification method of leaf alcohol

Through the combination of methylsulfonic acid magnetic catalyst and supported alkaline catalyst, the problem of impurity removal in the luteol is solved, and the production of high-purity and pure aroma is achieved, which is suitable for high-end fragrances and cosmetics.

CN120398647APending Publication Date: 2025-08-01JIANGXI XIANGHAI BIOLOGICAL TECH CO LTD
0 Cites 3 Cited by

Patent Information

Application Number
CN202510541560.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-28
Publication Date
2025-08-01

AI Technical Summary

Technical Problem

The prior art is difficult to effectively remove impurities in the luteol, especially silanols, siloxanes and hexenal impurities, resulting in impurity in the aroma and affecting the quality of high-end fragrances and cosmetics.

Method used

Using a combination method of methylsulfonic acid magnetic catalyst and a supported alkaline catalyst, impurities are removed through the esterification and alcoholylation steps, including the preparation of methylsulfonic acid magnetic catalyst, esterification of luol, alcoholylation and fractionation of esterified solutions. The stability of the magnetic catalyst and the activation of the alkaline catalyst are used to achieve effective removal of impurities by combining covalent action and magnetic core-shell structure.

Benefits of technology

It improves the purity of the luteol and the purity of the aroma, reduces losses during the treatment process, and is suitable for the production of high-end fragrances and cosmetics.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention relates to the technical field of purification of organic chemicals, in particular to an aroma purification method of leaf alcohol. Comprising the following steps: preparing a methanesulfonic acid magnetic catalyst; esterification of leaf alcohol; and alcoholysis and fractionation of the esterification solution. According to the method, acetic acid is used for esterification of leaf alcohol, then clear water and a sodium carbonate solution are used for washing, the clear water can effectively remove some water-soluble impurities and acidic byproducts, and the sodium carbonate solution not only can neutralize residual acidic substances, but also can promote siloxane impurities in initial leaf alcohol to be hydrolyzed and then taken away by a water phase, so that the content of the siloxane impurities in the leaf alcohol is reduced; in the subsequent process of producing leaf alcohol through alcoholysis of the organic phase I, pure water and ethanol, silyl ether impurities are hydrolyzed in a high-temperature and strong-alkali environment, products are dissolved in waste liquid to be removed, olefine aldehyde impurities with the boiling point lower than that of leaf alcohol are removed through azeotropic fractionation with ethanol, in conclusion, the impurities in the finished product leaf alcohol can be effectively reduced, and the yield of the finished product leaf alcohol is increased. And the prepared finished product leaf alcohol is high in purity and pure in fragrance.
Need to check novelty before this filing date? Find Prior Art