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Preparation method of 1, 2, 3-glycerin triacrylate

A technology of glycerol triacrylate and glycerin, which is applied in the field 1, can solve problems such as equipment corrosion and cumbersome post-processing operations, and achieve the effects of reducing production costs, reducing pollution and equipment corrosion, and safe and easy operation

Inactive Publication Date: 2012-07-11
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a preparation method of 1,2,3-propanetriol triacrylate, which uses bio-based material 1,2,3-propanetriol as raw material to overcome the three hydroxyl groups of the molecule The steric hindrance of the steric reaction makes all the hydroxyl groups on the three carbon atoms esterified. The process of the present invention overcomes the shortcomings of cumbersome post-treatment operations and equipment corrosion in the existing synthesis methods

Method used

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  • Preparation method of 1, 2, 3-glycerin triacrylate

Examples

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Embodiment 1

[0016] Add 0.2mol (18.4g) of 1,2,3-propanetriol, 0.7mol (50.4g) of acrylic acid, and 80ml of toluene as a water-carrying agent in a three-necked flask equipped with a reflux condenser, water separator, thermometer, and stirrer , the catalyst is silicotungstic acid 2.6g, the polymerization inhibitor is hydroquinone 1g, stir evenly and heat to 100°C, and react for 7 hours. The target product 1,2,3-propanetriol triacrylate was obtained after alkali neutralization and vacuum distillation.

Embodiment 2

[0018] Add 0.2mol (18.4g) of 1,2,3-propanetriol, 0.7mol (50.4g) of acrylic acid, and 80ml of toluene as a water-carrying agent in a three-necked flask equipped with a reflux condenser, water separator, thermometer, and stirrer , the catalyst is 3g of phosphotungstic acid, the polymerization inhibitor is 1.2g of hydroquinone, stir evenly and heat to 105°C, and react for 5 hours. The target product 1,2,3-propanetriol triacrylate was obtained after alkali neutralization and vacuum distillation.

Embodiment 3

[0020] Add 0.2mol (18.4g) of 1,2,3-propanetriol and 0.8mol (57.6g) of acrylic acid into a three-neck flask equipped with a reflux condenser, water separator, thermometer, and stirrer. 100ml, the catalyst is silicotungstic acid 3g, the polymerization inhibitor is hydroquinone 1.1g, stir evenly and heat to 95°C, and react for 6 hours. The target product 1,2,3-propanetriol triacrylate is obtained after alkali neutralization and then vacuum distillation.

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Abstract

The invention discloses a preparation method of 1, 2, 3-glycerin triacrylate, which uses bio-based material (1, 2, 3-glycerin) as a raw material, overcomes the space reaction steric hindrance of three hydroxyl radicals of the molecule and esterifies the hydroxyl radicals of three carbon atoms completely. Esterification reaction is carried out on the 1, 2, 3-glycerin and crylic acid under the existence of a catalyst, a polymerization inhibitor and a water-carrying agent, and then the target product (1, 2, 3-glycerin triacrylate) provided by the invention is obtained. The preparation method has the advantages that since solid acid or heteropoly acid is used as the catalyst and environmentally-friendly alkane is used as the water-carrying agent, the operation is safe and simple, the corrosion to equipment is avoided and the pollution to the environment is reduced.

Description

technical field [0001] The invention relates to a preparation method of 1,2,3-propanetriol triacrylate. In particular, it relates to a preparation method using bio-based material 1,2,3-glycerol as a raw material, overcoming the steric reaction hindrance of three hydroxyl groups of the molecule, and esterifying all hydroxyl groups on three carbon atoms. Background technique [0002] At present, the industrially synthesized polyol acrylate series products mainly use concentrated sulfuric acid as a catalyst, and are prepared by esterification reaction of acrylic acid and polyalcohol. The products obtained by this process have the following defects: 1. Poor product quality, chromaticity, The acidity and viscosity are high, and it is easy to be turbid; 2. The waste water and by-products after the reaction are cumbersome to deal with, which has a serious impact on the environment; 3. The product process is complex and the equipment is severely corroded. [0003] At present, there...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/54C07C67/035
Inventor 王秀芬周悦聂俊
Owner BEIJING UNIV OF CHEM TECH
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