A process for the preparation of an epoxy soybean oil and a composition for the preparation of an epoxy soybean oil

By adding sodium alkylate and/or sodium tungstate as adjuvants during the preparation of epoxidized soybean oil, the ring-opening reaction and excessive oxidation of unsaturated double bonds are inhibited, thus solving the problem of low epoxy value and achieving high epoxy value and stability in epoxidized soybean oil, thereby expanding its application potential.

CN122234008APending Publication Date: 2026-06-19北京水木信汇科技有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
北京水木信汇科技有限公司
Filing Date
2026-02-12
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

In existing technologies, the epoxy value of epoxidized soybean oil prepared using organic peroxides as oxidants is low, and side reactions such as ring-opening reactions and excessive oxidation of unsaturated double bonds exist, which limits its application environment.

Method used

Sodium alkylate and/or sodium tungstate are added as adjuvants during the preparation of epoxidized soybean oil. They are added in the form of saturated aqueous solution to inhibit ring-opening reaction and excessive oxidation of unsaturated double bonds, thereby improving epoxy value and epoxy bond stability.

Benefits of technology

It significantly improves the epoxy value and epoxy bond stability of epoxidized soybean oil, maintains a relatively low iodine value, and enhances the product's performance and application range.

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Abstract

This invention provides a method for preparing epoxidized soybean oil and a composition for preparing epoxidized soybean oil. The preparation method includes the following steps: mixing soybean oil, an oxidant, a catalyst, and an auxiliary agent, and carrying out an epoxidation reaction to obtain epoxidized soybean oil; wherein, the oxidant is selected from a solution containing organic peroxides; the auxiliary agent is selected from sodium salts of organic acids, and the sodium salts of organic acids are selected from at least one of sodium alkylates and sodium tungstate. The preparation method effectively inhibits the occurrence of side reactions such as ring-opening reactions and excessive oxidation of unsaturated double bonds during the epoxidation process of epoxidized soybean oil by adding sodium alkylates and / or sodium tungstate as auxiliary agents during the preparation of epoxidized soybean oil, significantly improving the epoxy value and epoxy bond stability of epoxidized soybean oil while maintaining a relatively low iodine value.
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