Production method of epoxidized fatty acid methyl ester/epoxidized soybean oil

Abstract

The invention relates to a production method of epoxidized fatty acid methyl ester / epoxidized soybean oil. The production method concretely comprises the following technological steps: (1) taking one of soybean oil and fatty acid methyl ester, formic acid and hydrogen peroxide and preheating them to 90+ / -2 DEG C; and (2) adding preheated soybean oil, formic acid and hydrogen peroxide into a pipeline reactor to react until the end of the reaction. According to the invention, by the utilization of the pipeline reactor, the technical bias that a high concentration of hydrogen peroxide cannot be used in a traditional epoxidized soybean oil production technology is overcome; by the use of 70% high concentration of hydrogen peroxide in the production process, the reaction time is greatly shortened, and the yield is substantially raised. In addition, by the use of a high concentration of hydrogen peroxide and a high proportion of formic acid, the reaction speed is fast, side reaction is less, epoxy value of the produced epoxidized soybean oil / epoxidized fatty acid methyl ester is remarkably raised, color is obviously improved, and transparency is better.

Description

technical field [0001] The invention relates to a production method of epoxidized soybean oil. Background technique [0002] Epoxidized soybean oil is the most widely used non-toxic plasticizer and stabilizer for PVC. It has excellent thermal stability and light stability, good water resistance and oil resistance, can endow products with good mechanical strength, weather resistance and electrical properties, and is non-toxic. It is a chemical process additive used in food packaging materials by the international population . Epoxy fatty acid methyl ester plasticizers can not only completely or partially replace DOP plasticizers to produce non-toxic and environmentally friendly PVC products, which are used in food packaging, medical supplies, toys and water supply pipes, etc., and are also used as cellulose resins It is a non-toxic plasticizer and softener for synthetic rubber. In the processing of products, adding epoxy fatty acid methyl ester can significantly improve the...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the production process of domestic epoxy methyl ester / epoxy soybean oil uses raw materials to add to the reactor, and after heating to about 50°C, hydrogen peroxide is added dropwise, and the concentration of hydrogen peroxide is 25-50%. 10 cubic meters of raw materials, the reaction time About 8 hours, because the reaction time is too long, there are many side reactions in the reaction process, so the epoxy value of the product is not high, the epoxy soybean oil is about 6.3, the epoxy methyl ester is about 3.8, and the color of the product is yellowish

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