A kind of preparation method of epoxy vegetable oil

A technology for epoxidized vegetable oil and vegetable oil, which is applied in the field of enzymatic preparation of epoxidized vegetable oil, can solve the problems of low yield and many side reactions in the epoxidation process, and achieves high yield, good economy, environmental protection, and process. simple effect

Active Publication Date: 2018-06-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the shortcomings of the existing vegetable oil enzymatic epoxidation process with many side reactions and low yield, the present invention provides a vegetable oil epoxidation method catalyzed by partial glyceride lipase

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add soybean oil 900g in reaction vessel, hydrogen peroxide (containing hydrogen peroxide 30%) 500g (the mol ratio of hydrogen peroxide and soybean oil is about 6:1), partial glyceride lipase Lipase G50 (purchased from Japan Amano company) 9 g, 900 g of glycerin, and the epoxidation reaction was carried out in a constant temperature magnetic stirrer at 45° C. at a stirring speed of 600 rpm for 24 h. After the reaction is over, the reaction mixture is centrifuged or settled to separate and recover the oil phase and the glycerin phase. After testing, its acid value is 0.25 and epoxy value is 5.3. The content of epoxy fatty acid triglyceride in the product analyzed by liquid chromatography-mass spectrometry is 98.5%, and the content of epoxy fatty acid diglyceride and monoester is 1.2%.

Embodiment 2

[0026] Add soybean oil 900g in reaction vessel, hydrogen peroxide (containing hydrogen peroxide 30%) 500g (the mol ratio of hydrogen peroxide and soybean oil is about 6:1), 9g partial glyceride lipase Lipase SMG1, glycerol 900g, at 30 The epoxidation reaction was carried out at a constant temperature magnetic stirrer at 600 rpm for 24 h. After the reaction is over, the reaction mixture is centrifuged or settled to separate and recover the oil phase and the glycerol phase. After testing, its acid value is 0.14 and epoxy value is 5.1. The content of epoxy fatty acid triglyceride in the product analyzed by liquid chromatography-mass spectrometry was 98.7%, and the content of epoxy fatty acid diglyceride and monoester was 1.3%.

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Abstract

The invention discloses a method for preparing epoxidized vegetable oil, which is characterized in that it comprises the following steps: (1) using partial glyceride lipase as a catalyst, glycerol as a reaction auxiliary agent, and carrying out epoxidation reaction of vegetable oil and hydrogen peroxide; (2) Separating the reaction product and reclaiming the oil phase, the epoxy vegetable oil can be obtained. The reaction does not have side reactions such as hydrolysis and glycerolysis, the product is single, the production process is easy to control, the catalyst can be recycled, and it has very good industrial application prospects.

Description

technical field [0001] The invention relates to an enzymatic preparation method of epoxy vegetable oil. Background technique [0002] Substances added to polymer materials that can enhance the plasticity of polymers can be called plasticizers, also known as plasticizers or plasticizers; they are indispensable processing aids in the processing of plastic products, which can increase the softness of materials Or liquefy the material. The plasticizing principle of plasticizers is generally distributed between the macromolecular chains of plastic products, which can reduce the force between molecules, reduce the viscosity of polymers, and enhance flexibility. my country is the largest country in the production and consumption of plastic products in the world, but for a long time plasticizers have been dominated by o-phthalic products such as DOP (dioctyl phthalate), DOP is a general-purpose plasticizer, mainly used In the processing of polyvinyl chloride resin, it can also be u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P7/64
CPCY02P20/584
Inventor 王卫飞王永华杨博曾朝喜严慧玲蓝东明李志刚
Owner SOUTH CHINA UNIV OF TECH
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