Method for synthesizing epoxy soybean oil base polyol under heterogenous catalysis system

An oil-based polyol and heterogeneous catalysis technology, which is applied in chemical instruments and methods, preparation of organic compounds, molecular sieve catalysts, etc., can solve the problems of non-recyclable catalysts, environmental pollution of equipment, complicated operation process, etc., and achieve simplification Post-treatment process, ensuring purity, and improving economic efficiency

Inactive Publication Date: 2009-04-01
JIANGSU SHUANGBAO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main problem of this method is that the catalysts used corrode equipment and cause environmental pollution, and these catalysts cannot be recycled
In addition, due to the presence of organic solvents, the entire operation process is complicated

Method used

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  • Method for synthesizing epoxy soybean oil base polyol under heterogenous catalysis system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Add 20g of epoxidized soybean oil, 0.1g of HY molecular sieve and 20g of anhydrous methanol into an autoclave equipped with stirring and a volume of 100ml, heat up to 60°C, react for 20h, and discharge the material to obtain a milky white liquid. Analyze the product test.

[0023] The epoxy value of epoxidized soybean oil is 0.376, and the epoxy value of the product measured after the reaction is 0.0167. The product is analyzed by infrared spectroscopy, as can be seen from the figure that the product is at 3400cm -1 The characteristic absorption peak of hydroxyl group appears on the left and right, 840cm -1 and 820cm -1 The characteristic peak of the epoxy group at the place disappears, thus confirming that the product is a vegetable oil polyol.

Embodiment 2

[0025] Add 20g of epoxidized soybean oil, 0.5g of LiY molecular sieve and 30g of anhydrous methanol into an autoclave equipped with agitation and a volume of 100ml, heat up to 80°C, react for 15h and discharge to obtain milky white liquid, analyze the product test. The epoxy value of epoxidized soybean oil is 0.376, and the epoxy value of the product measured after the reaction is 0.0036.

Embodiment 3

[0027] Add 20g of epoxidized soybean oil, 1.0g of KY molecular sieve and 40g of anhydrous methanol into an autoclave equipped with stirring and a volume of 100ml, heat up to 100°C, react for 10h, and discharge the material to obtain a milky white liquid. Analyze the product test. The epoxy value of epoxidized soybean oil is 0.376, and the epoxy value of the product measured after the reaction is 0.0045.

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Abstract

The invention relates to a method for synthesizing epoxidized soybean oil-based polyol under a heterogeneous catalytic system; the method comprises the steps: epoxidized soybean oil, anhydrous methanol and a catalyst are added in an autoclave, wherein, the weight ratio of the methanol to the epoxidized soybean oil is 1 to 5:1, the weight ratio of the catalyst to the epoxidized soybean oil is 0.005 to 0.25:1, the reaction temperature is 60 DEG C to 160 DEG C, the reaction pressure is the self-pressure, the reaction is started under the action of stirring, the reaction time is 1.5 to 20 hours, the catalyst is filtered out after the completion of the reaction, and the epoxidized soybean oil-based polyol is obtained by distillation under the reduced pressure. The method has the advantages of simplifying the post-treatment process, ensuring the product purity and avoiding the environmental pollution.

Description

technical field [0001] The invention belongs to a method for synthesizing vegetable oil-based polyols, and specifically relates to ring-opening addition reaction of epoxidized soybean oil and methanol to produce fine chemicals epoxidized soybean oil-based polyols in the presence of a heterogeneous catalyst. technical background [0002] In recent years, due to the limitation of fossil resources such as petroleum and the increasing demand for resources, the use of natural renewable resources to replace fossil resources such as petroleum has become a research hotspot. Soybean oil is the cheapest and most readily available vegetable oil, and the application of soybean oil and its derivatives has become a research hotspot in recent years. The epoxidized soybean oil obtained by the epoxidation of carbon-carbon double bonds in soybean oil, the polyol obtained by hydroxylation under the action of a catalyst has the characteristics of high hydroxyl content, coupled with the particul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/66C07C67/31B01J29/08
Inventor 亢茂青秦飞王军威李其峰
Owner JIANGSU SHUANGBAO TECH
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