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High-quality epoxy ester production method with low energy consumption and little wastewater

A technology of epoxy oil ester and production method, which is applied in the direction of organic chemistry, can solve problems such as separation difficulties, emulsification, loss of materials and time, and achieve the effects of reducing material consumption, energy consumption, and waste water discharge

Inactive Publication Date: 2009-06-03
JIANGNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the shortcoming of this technique is that the crude product needs to be washed five times to obtain a qualified product, and a large amount of waste water is unavoidably produced in the process, because the proportion of crude epoxy soybean oil and epoxy fatty acid first (b) ester is respectively 0.985- 0.99, 0.985-0.995, very close to the specific gravity of water, each wash must go through a long period of static stratification, and often emulsification, resulting in separation difficulties, loss of a lot of materials and time

Method used

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  • High-quality epoxy ester production method with low energy consumption and little wastewater
  • High-quality epoxy ester production method with low energy consumption and little wastewater

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Embodiment 1

[0018] Press soybean oil: hydrogen peroxide: the weight ratio of formic acid=1:1.0:0.15, take by weighing a certain amount of iodine value 130gI2 / 100g soybean oil and 85% formic acid are placed in stirrer, thermometer, the there-necked flask of dropping funnel In the process, the three-neck flask is placed in a water bath system with automatic temperature control, stirred, and 35% hydrogen peroxide is added dropwise, and the drop is completed in 5-10 minutes. After the temperature rises to 60°C, the heat preservation is started. The heat preservation time is 5 hours, and the epoxidation reaction is completed. . Transfer the reaction mixture to a separatory funnel, let it stand for a while to separate the water layer, wash the ester layer with distilled water at about 70°C once, the water consumption is about 40% of the volume of the ester layer, and then distill the product with steam distillation for 3 to 4 hours The depth is acid-reduced and dried, and the product epoxidized...

Embodiment 2

[0020] By fatty acid methyl ester: hydrogen peroxide: the weight ratio of formic acid=1:0.55:0.15, take by weighing a certain amount of fatty acid methyl ester (iodine value 120gI 2 / 100g) and 85% formic acid are placed with agitator, thermometer, in the three-necked flask of dropping funnel, and the three-necked flask is placed in the water bath system with automatic temperature control, stirs, drips the hydrogen peroxide of 35%, 5- After 10 minutes of dripping, the temperature rises to 60° C. and then heat preservation is started. The heat preservation time is 4 hours, and the epoxidation reaction ends. Transfer the reaction mixture to a separatory funnel, let it stand for a while to separate the water layer, wash the ester layer with distilled water at about 70°C once, the water consumption is about 40% of the volume of the ester layer, and then distill the product with steam distillation for 3 to 4 hours Depth deacidification is dried, and product epoxy fatty acid methyl e...

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Abstract

A high-quality epoxy oil and ester production method with low energy consumption and little wastewater belongs to the technical field of fine chemical industry, energy conservation and emission reduction. The method comprises the following steps: selecting soybean oil or unsaturated fatty acid methyl (ethyl) esters as raw materials; adding hydrogen peroxide as oxygen source and formic acid as oxygen carrier; epoxidizing; washing with water for one time; distilling with steam to reduce acid and dry the product; and refining to obtain epoxy soybean oil or epoxy fatty acid methyl (ethyl) esters. The method has the advantages of low energy consumption, reduced wastewater emission, greatly shortened entire production cycle, high quality of the epoxy product and low acid value.

Description

technical field [0001] The present invention relates to a kind of preparation method of epoxy plasticizer, especially relate to a kind of low energy consumption, little waste water, the production method of high-quality epoxidized soybean oil or epoxidized fatty acid methyl (b) ester, belong to fine chemical industry and energy saving and reduction technical field. Background technique [0002] Epoxidized soybean oil and epoxidized fatty acid methyl (b) ester are currently widely used non-toxic, non-benzene ring-type environment-friendly plastic additives--plasticizers, which have dual properties of plasticizing and thermal stability, and have no Toxic, safe and environmentally friendly, so it is favored by the plastic product industry, and it is widely used in industrial fields such as plastics, coatings, new polymer materials, and rubber. With the improvement of environmental protection awareness in all countries in the world, the toxicity of plasticizers has attracted mo...

Claims

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Application Information

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IPC IPC(8): C07D301/12C07D303/42
Inventor 蒋平平刘伟伟魏猛陈旻
Owner JIANGNAN UNIV
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