PROCESS FOR THE PREPARATION OF UNSATURATED CARBOXYLIC ACID ESTERS

DE602019070278T2Active Publication Date: 2025-05-21MITSUBISHI CHEM CORP
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Patent Information

Application Number
DE602019070278
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Filing Date
2019-03-26
Publication Date
2025-05-21
Estimated Expiration
2039-03-26

AI Technical Summary

Technical Problem

In the production of unsaturated carboxylic esters, the risk of polymerization blockage in reactors is high due to the unsaturated carboxylic acids, which can lead to reactor shutdowns and increased costs, and existing methods struggle to maintain high conversion rates while minimizing equipment costs and workload.

Method used

A method involving a reactor packed with a solid catalyst where unsaturated carboxylic acid and alcohol are continuously fed, and a vaporized organic solvent is introduced in a concurrent flow, allowing for high conversion rates without substantial heat supply, and incorporating a multi-stage reactor system for efficient separation and recovery of reaction products.

Benefits of technology

This approach reduces the risk of polymerization blockage while maintaining high conversion rates and minimizing equipment costs and workload, enabling efficient production of unsaturated carboxylic esters.

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Abstract

An object of the present invention is to provide a method for producing an unsaturated carboxylic ester, wherein the risk of polymerization blockage is reduced and the required equipment cost and workload involved are kept low while maintaining a high conversion rate in an esterification reaction of unsaturated carboxylic acid. This object can be achieved by a method for producing an unsaturated carboxylic ester, which includes performing an esterification reaction using a reactor packed with a solid catalyst, wherein unsaturated carboxylic acid and alcohol are continuously fed to the reactor from an inlet thereof to form a fluid of the reaction solution in the reactor, and the vaporized organic solvent is continuously fed to the reactor from the inlet or a part near the inlet of the reactor.
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