Method for preparing epoxy methyl eleostearate from tung oil

A technology for epoxidizing methyl eleostearate and methyl eleostearate, which is applied in chemical recycling, organic chemistry and other directions, can solve problems such as a large amount of waste acid water, poor product quality, equipment corrosion, etc., and achieves less environmental pollution and production costs. Low, short production cycle effect

Inactive Publication Date: 2014-02-26
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has disadvantages such as serious corrosion of catalyst to equipment, high energy consu

Method used

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  • Method for preparing epoxy methyl eleostearate from tung oil
  • Method for preparing epoxy methyl eleostearate from tung oil
  • Method for preparing epoxy methyl eleostearate from tung oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: Add 100 g of tung oil, 1.0 g of KOH and 33 g of methanol into a 250 mL three-necked flask, and react at 75°C for 1.5 h. After the reaction was completed, the liquid was separated, methanol was recovered, the organic layer was washed with water three times, and vacuum dehydration was carried out to obtain 98.1 g of methyl chelate, and the yield of methyl chelate was 98.24%.

Embodiment 2-5

[0019] Examples 2-5: According to the process of Example 1, the amount of methanol, the amount of KOH, the reaction time, and the reaction temperature were changed respectively, and four groups of different results were obtained, as shown in the table below.

[0020] Table 1

[0021]

Embodiment 6

[0022] Example 6: In a 250 mL three-necked flask, add 30 g of the above-mentioned product methyl chelate, then add 1.5 g of cation exchange resin and 14.7 mL of acetic acid, stir for 30 min, and start to drop 52.5 mL of hydrogen peroxide aqueous solution (concentration? ), the temperature was raised to 60°C after dropping, and reacted for 3 h. Separation after reaction finishes, organic layer is washed with sodium bicarbonate, then washed with water 3 times, and vacuum dehydration obtains the light yellow oily epoxy kalenoic acid methyl ester 31.5 g, and yield is 98.5%, and epoxy value is 6.5%.

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Abstract

A method for preparing epoxy methyl eleostearate from tung oil comprises the following steps: taking tung oil as the raw material, carrying out ester exchange reactions so as to obtain methyl eleostearate, and then in the action of a solid acid catalyst, carrying out epoxidation reactions to synthesize epoxy methyl eleostearate. The method has the advantages of low production cost, convenient operation, short production period, little environmental pollution, and high quality product, and the solid acid catalyst can be recycled and repeatedly reused after a simple treatment.

Description

technical field [0001] The invention relates to the field of chemical synthesis, in particular to a method for preparing epoxidized methyl lyceate from tung oil. Background technique [0002] Epoxidized methyl lyceate contains epoxy bonds and double bonds in its molecular structure, and its introduction into the molecular chain segment of the coating resin can make the coating resin have better film-forming properties, and the obtained film has Better adhesion, acid resistance, alkali resistance, high temperature resistance, frost crack resistance, waterproof, anti-corrosion, insulation, radiation resistance, penetration resistance and other excellent properties. Therefore, epoxidized methyl chelate is a new type of paint modifier and advanced paint preparation raw material with great development potential. [0003] Take tung oil as the method for the preparation of epoxidized methyl chelate as raw material, and there is no bibliographical report yet. At present, the synth...

Claims

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Application Information

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IPC IPC(8): C07D303/42C07D301/12
CPCY02P20/584C07D303/42C07D301/12
Inventor 孙汉洲周尽花谭晓风章怀云李妮杨晶麻文杰蔡波
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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