Equipment for cyclization reaction of pyridinone ethanolamine salt and method for producing pyridinone ethanolamine salt

Abstract

The invention relates to the field of pyridinone ethanolamine salt production and processing, in particular to equipment for pyridinone ethanolamine salt cyclization reaction and a method for producing pyridinone ethanolamine salt. The equipment for pyridinone ethanolamine salt cyclization reaction comprises a reaction kettle body, a hydrolysis kettle and an esterification kettle are sequentially arranged in the reaction kettle body from top to bottom, the hydrolysis kettle is used for carrying out a hydrolysis reaction, the esterification kettle is used for carrying out a lactonization reaction, a heat insulation plate is arranged between the hydrolysis kettle and the esterification kettle, the lower part of the hydrolysis kettle is communicated with a feeding channel, a gate valve is arranged on the feeding channel, and the end part, far from the hydrolysis kettle, of the feeding channel penetrates through the heat insulation plate and then is communicated with the upper part of the esterification kettle; The invention further discloses a production method of the pyridinone ethanolamine salt. The production method comprises the step of carrying out cyclization reaction in the equipment for the cyclization reaction of the pyridinone ethanolamine salt. The method has the effect of improving the production efficiency and the product yield.

Description

technical field [0001] The application relates to the field of production and processing of pyridone ethanolamine salt, more specifically, it relates to a device for the cyclization reaction of pyridone ethanolamine salt and a method for producing pyridone ethanolamine salt. Background technique [0002] Pyridone ethanolamine salt, chemical name 1-hydroxy-4-methyl-6-(2,4,4-trimethylpentyl)-2-pyridone ethanolamine salt (Octopirox), molecular structure is as follows. [0003] [0004] Pyridone ethanolamine salt is an effective anti-dandruff and anti-itch agent. Its anti-dandruff and anti-itch effect is better than other additives of the same kind. Not only can it be well mixed with other additives in shampoo, but it is also non-toxic and non-irritating , high safety performance, widely used in shampoo and hair care products, body wash and washing products. [0005] In the conventional synthetic method of pyridone ethanolamine salt, intermediate 3,7,9,9-tetramethyl-2-decene...

AI Technical Summary

Problems solved by technology

But this will greatly lengthen the production cycle of the product and reduce the economic benefits.

Therefore some producers can choose the mode that multi-reactor carries out simultaneously to improve production efficiency, but in the transfer process of hydrolyzate 3,7,9,9-tetramethyl-2-decene-5-keto acid, due to the hydrolysis process Reversible, when the reaction mixture is transferred between different reactors, the temperature changes, and the hydrolysis proceeds in reverse, which will cause the product to decrease and the yield will be affected

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