Production method of isoamyl salicylate

A technology of isoamyl salicylate and a production method, which are applied in chemical instruments and methods, reaction preparation of ester groups and hydroxyl groups, organic chemistry, etc., can solve the problem of reducing the yield of isoamyl salicylate, reducing the reaction selectivity, Easy to corrode equipment and other problems, to achieve the effect of reducing production costs, improving selectivity, and convenient recycling
CN109912409AInactive Publication Date: 2019-06-21天津大加化工有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
天津大加化工有限公司
Publication Date
2019-06-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a production method of isoamyl salicylate, and belongs to the technical field of isoamyl salicylate. The production method comprises the following steps: preparing the isoamylsalicylate, separating crude ester, washing the crude ester with water, and distilling the crude ester under reduced pressure, wherein under the conditions of a solid superstrong acid catalyst and microwave irradiation, a reaction is performed on methyl salicylate and isoamyl alcohol to produce the isoamyl salicylate; the solid superstrong acid catalyst comprises an active component and a carrier; the active component comprises lanthanum sulfate, molybdenum sulfate and cesium sulfate; the carrier is titanium dioxide. By the production method of the isoamyl salicylate, corrosion of equipment during production is reduced, so that the service life of the equipment is prolonged; in addition, the advantages of simple technology and relatively high selectivity are achieved; meanwhile, the solidsuperstrong acid catalyst is easy to separate and recycle.
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Description

technical field

[0001] The present invention relates to the technical field of isoamyl salicylate, more specifically, it relates to a kind of production method of isoamyl salicylate. Background technique

[0002] Isoamyl Salicylate is a colorless or light yellow liquid with strong floral scent and long-lasting fragrance. Isoamyl salicylate can be added to grass orchid essence, xiangwei, Su Xinlan, and can also be used in medicine and food to play a role in fixing fragrance.

[0003] At present, the patent application literature with the application publication number CN102249926A discloses a preparation method of isoamyl salicylate. The raw materials include 65-75 g of salicylic acid, 440-460 g of isoamyl alcohol, and 18-25 g of concentrated sulfuric acid. , neutralization, water washing and distillation to prepare isoamyl salicylate. The preparation method of this isoamyl salicylate adopts concentrated sulfuric acid as a catalyst to esterify salicylic acid and isoamyl alc...

Claims

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