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A kind of preparation method of novel epoxidized soybean oil

A technology for epoxidizing soybean oil and soybean oil, applied in the direction of organic chemistry, etc., can solve the problem of strong acid corrosion due to the amount of hydrogen peroxide, and achieve the effects of reducing reaction by-products, simplifying the process flow, and high epoxy value of the product

Inactive Publication Date: 2017-04-12
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The invention provides a method for preparing epoxy soybean oil. The method is simple to operate and low in cost. It is an environmentally friendly method for preparing epoxy soybean oil. The method overcomes the problem of formic acid decomposition in the current preparation process of epoxy soybean oil Disadvantages such as toxicity, high amount of hydrogen peroxide and corrosion caused by strong acid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] A kind of preparation method of novel epoxidized soybean oil comprises the steps:

[0026] a. Sampling, choose 100g edible soybean oil as reaction raw material, choose organometallic salt as reaction catalyst, choose metal oxide as reaction auxiliary agent, add raw material, catalyst and auxiliary agent together in the neat and clean autoclave, and react The kettle is sealed;

[0027] b. During the reaction process, fill the reactor with pure oxygen, the reaction pressure is in the range of 0.8-1.2MPa, the reaction temperature is in the range of 110-130°C, turn on the stirring switch, and carry out the stirring reaction under the condition of stable temperature and pressure, stirring The time is 1-2h;

[0028] c. Refining process, after the reaction is finished, cool to room temperature, take out the reaction sample, carry out vacuum distillation to it, and obtain epoxy soybean oil after purification, and measure its epoxy value.

[0029] A specific embodiment of the ...

Embodiment 1

[0039] Take soybean oil 100g, catalyst manganese benzoate 0.2g, add the two in the autoclave, fill with oxygen (80% oxygen, nitrogen 20%), the reaction temperature is 120 ℃, pressure 1.0MPa, stir under this condition After reacting for 1.5 h, cool to room temperature, take out the reaction sample, and carry out vacuum distillation on oxidized soybean oil to obtain epoxidized soybean oil. The epoxy value of epoxidized soybean oil was measured to be 6.22%.

Embodiment 2

[0041] Take by weighing 100g of soybean oil, 0.2g of catalyst manganese benzoate, and 3 grams of zinc oxide, put the three into an autoclave, fill with oxygen (80% oxygen, 20% nitrogen), the reaction temperature is 120°C, and the pressure is 1.2MPa , after stirring and reacting for 1.5 h under this condition, it was cooled to room temperature, and the reaction sample was taken out, and the oxidized soybean oil was subjected to vacuum distillation to obtain epoxidized soybean oil. The epoxy value of epoxidized soybean oil was measured to be 6.53%.

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PUM

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Abstract

The invention relates to a preparation method of soybean oil, in particular to a preparation method of novel green environmental-protection epoxidized soybean oil, and belongs to the fields of organic chemicals, catalytic reaction and new material synthesis crossing. The method includes the steps of sampling, reaction and refining. Oxygen instead of hydrogen peroxide is used as an oxygen source, so that the defect of difficulty in temperature control after addition of hydrogen peroxide is avoided, and cost is lowered greatly; organic metal salt and metal oxide are selected as catalyst and assistant respectively and replace organic acid and mineral acid which are adopted as the catalyst and assistant respectively in existing methods and disclosed inventions, processes of alkali wash, dehydration and the like are omitted, and the technological process is simplified; reaction is stable, reaction by-products are reduced relatively, product epoxy value is high, and the method is a practical green environmental-protection technological preparation method.

Description

technical field [0001] The invention relates to a preparation method of soybean oil, in particular to a preparation method of novel epoxidized soybean oil, which belongs to the cross field of organic chemical industry, catalytic reaction and new material synthesis. Background technique [0002] As an environmentally friendly, stable and biodegradable plasticizer, epoxy soybean oil fully complies with US FDA food additive rules and EU ROHS environmental directives. It is an internationally recognized green plasticizer and is widely used in food, drug packaging materials, children's Toys, home decoration materials, PVC products and other fields. [0003] The molecular formula of epoxy soybean oil is C 57 h 98 o 12 , the average molecular weight is about 1000. It is a chemical product synthesized by epoxidation using soybean oil as the main raw material. Its main component is a mixture of unsaturated glycerin fatty acid esters, and contains trace impurities such as pigments...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D303/42C07D301/06
CPCC07D301/06C07D303/42
Inventor 张淑霞沐宝泉王伟明文萍
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)