Method for preparing epoxy soybean oil-based polyalcohol from epoxy soybean oil

A technology of epoxidized soybean oil and oil-based polyols, which is applied in the preparation of carboxylic acid esters, chemical instruments and methods, and the preparation of organic compounds. The effect of poor conditions and reduced dependence

Inactive Publication Date: 2010-09-15
JIANGSU SHUANGBAO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems of this method are: there are potential safety hazards in the synthesis method, and the post-treatment is complicated; most of the catalysts used are homogeneous catalysts, which cannot be recycled, and the acid catalysts corrode equipment and cause environmental pollution.

Method used

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  • Method for preparing epoxy soybean oil-based polyalcohol from epoxy soybean oil
  • Method for preparing epoxy soybean oil-based polyalcohol from epoxy soybean oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In a high-pressure reactor equipped with magnetic stirring and a volume of 100ml, add 20g of epoxidized soybean oil, 24g of methanol, 4g of acetone, 4g of water and 3g of NaZSM-5, and raise the temperature to 120°C at a heating rate of 5°C / min. After reacting for 20h, the material is discharged to obtain an orange-yellow liquid. After the reaction is completed, the catalyst is obtained by filtration, and the solvent, methanol and epoxy soybean oil-based polyol are obtained by distillation under reduced pressure. The catalyst obtained by filtration and the solvent and methanol obtained by distillation are directly used for the next time Reaction to achieve recycling. Analytical tests were performed on the product.

[0025] The epoxy value of the epoxidized soybean oil is 0.376, the epoxy value of the product measured after the reaction is 0.108, and the reaction conversion rate is 71.3%. The reaction products were analyzed by infrared spectroscopy, from figure 1 It can...

Embodiment 2

[0027] In a 100ml autoclave equipped with magnetic stirring, add 20g epoxidized soybean oil, 16g methanol, 4g methyl ethyl ketone, 2g water and 6g NH 4 For ZSM-5, the temperature was raised to 140°C at a heating rate of 5°C / min, and the material was discharged after 20 hours of reaction to obtain an orange-yellow liquid, which was analyzed and tested. The epoxy value of the epoxidized soybean oil is 0.376, the epoxy value of the product measured after the reaction is 0.124, and the reaction conversion rate is 67.0%. All the other are with embodiment 1.

Embodiment 3

[0029] In a high-pressure reactor equipped with magnetic stirring and a volume of 100ml, add 20g of epoxidized soybean oil, 10g of methanol, 4g of acetone, 3g of water and 4g of HZSM-5, and raise the temperature to 160°C at a heating rate of 5°C / min. After reacting for 20 hours, the material was discharged to obtain an orange-yellow liquid, and the product was analyzed and tested. The epoxy value of the epoxidized soybean oil is 0.376, the epoxy value of the product measured after the reaction is 0.006, and the reaction conversion rate is 98.4%. All the other are with embodiment 1.

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Abstract

The invention discloses a method for preparing epoxy soybean oil-based polyalcohol from epoxy soybean oil, comprising the following steps of: adding the epoxy soybean oil, absolute methanol, solvent, water and a catalyst into an autoclave; introducing nitrogen gas and evacuating, raising the temperature to 100-160DEG C at the temperature-raising speed of 2-10DEG C/min; and reacting at the reaction pressure of self-generated pressure for 12-20h to obtain a product; filtering after reaction to obtain the catalyst; and carrying out vacuum distillation to obtain the solvent, the methanol and theepoxy soybean oil-based polyalcohol, wherein the catalyst obtained by filtering and the solvent and the methanol which ate obtained by distillation are directly used for next reaction and the recycling can be realized. The invention has the advantages of no pollution, mild reaction conditions and simple post treatment.

Description

technical field [0001] The invention belongs to a method for preparing polyols, and in particular relates to a method for preparing epoxidized soybean oil-based polyols by reacting epoxidized soybean oil and methanol under a heterogeneous catalyst system. Background technique [0002] Polyol is an important chemical intermediate, which is widely used in the fields of food, cosmetics, hygiene products, chemical industry and medicine. Especially in the polyurethane industry, polyol is an irreplaceable raw material. Most of the polyols currently used in the polyurethane industry come from fossil resources such as petroleum. In recent years, with the depletion of fossil resources and the increasing pressure from resources, environment, legislation and society, the use of natural renewable resources to replace fossil resources such as petroleum has become a top priority. [0003] Vegetable oil is one of the most promising petroleum substitute raw materials for the synthesis of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/675C07C67/31
Inventor 李其峰亢茂青穆海平王军威赵雨华
Owner JIANGSU SHUANGBAO TECH
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