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Preparation method of bisphenol A polyoxyethylene ether with narrow molecular weight distribution

A narrow molecular weight distribution, polyoxyethylene ether technology, applied in the direction of ether preparation, alkylene oxide preparation ether, ester reaction preparation ether, etc., to achieve the effect of less by-products, easy to obtain raw materials, and improve product quality and stability

Active Publication Date: 2019-01-25
浙江三江化工新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the reports mainly focus on the effects of different types of catalysts on the content of by-products in bisphenol A polyoxyethylene ethers, and there are few studies and studies on the influence of molecular weight distribution on the performance of bisphenol A polyoxyethylene ethers. to report

Method used

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  • Preparation method of bisphenol A polyoxyethylene ether with narrow molecular weight distribution
  • Preparation method of bisphenol A polyoxyethylene ether with narrow molecular weight distribution
  • Preparation method of bisphenol A polyoxyethylene ether with narrow molecular weight distribution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1 Preparation of bisphenol A polyoxyethylene (6) ether

[0020] Add 1.0mol (228.0g) bisphenol A, 2.0mol

[0021] (176.0g) ethylene carbonate and 2.83g potassium methoxide, open the pressure relief valve, the pressure relief valve is connected to the lye absorption tank through a pipeline, slowly raise the temperature to 40°C, and react for 2 hours; then, close the pressure relief valve, and the epoxy Connect the ethane metering tank to the pressure kettle, and replace the gas in the kettle with nitrogen for 3 times. After the temperature of the kettle rises to 120°C, 4.0mol (176.0g) of ethylene oxide is fed in for 1.5 hours, and the reaction is continued for 0.5 hours. After completion, cool down, release the pressure, add acetic acid to neutralize, put

[0022] Bisphenol A polyoxyethylene (6) ether.

Embodiment 2

[0023] Example 2 Preparation of bisphenol A polyoxyethylene (2) ether

[0024] Add 1.5mol (342.0g) bisphenol A, 3.0mol

[0025] (264.0g) ethylene carbonate and 2.42g sodium hydroxide, open the pressure relief valve, the pressure relief valve is connected to the lye absorption tank through a pipeline, slowly raise the temperature to 50°C, and react for 1.0 hour. However

[0026] Finally, close the pressure relief valve, connect the ethylene oxide metering tank to the pressure kettle, replace the gas in the kettle with nitrogen for 3 times, wait until the temperature of the kettle rises to 100°C, and feed 0mol (0g) of ethylene oxide for 0 hours. Finished, continue to react for 0 hours. After the reaction is completed, cool down, release the pressure, add acetic acid for neutralization, and discharge to obtain bisphenol A polyoxyethylene (2) ether.

Embodiment 3

[0027] Example 3 Preparation of bisphenol A polyoxyethylene (10) ether

[0028] Add 0.5mol (114.0g) bisphenol A, 1.0mol

[0029] (88.0g) ethylene carbonate and 2.02g potassium hydroxide, open the pressure relief valve, the pressure relief valve is connected to the lye absorption tank through a pipeline, slowly raise the temperature to 30°C, and react for 3.0 hours. Then, close the pressure relief valve, connect the ethylene oxide metering tank to the autoclave, replace the gas in the autoclave with nitrogen for 3 times, wait until the temperature of the autoclave rises to 140°C, and feed 4.0mol (176.0g) of ethylene oxide, 3.5 After one hour passed, the reaction was continued for 0.5 hour. After the reaction is completed, cool down, release the pressure, add acetic acid for neutralization, and discharge to obtain bisphenol A polyoxyethylene (10) ether.

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Abstract

The invention discloses a preparation method of bisphenol A polyoxyethylene ether with narrow molecular weight distribution. The reaction is carried out in two stages, and the preparation method specifically includecomprises the following steps: 1) taking bisphenol A as a starting agent, and adding vinyl carbonate for reaction under the action of alkaline catalysts to obtain bishydroxyethyl bisphenol A ether; 2) heating the reaction liquid in the step 1), adding ethylene oxide for addition reaction, and adding acetic acid for neutralization to obtain the bisphenol A polyoxyethylene ether. Thepreparation method has the advantages that the conventional alkaline catalysts such as potassium hydroxide, sodium hydroxide, sodium methoxide and potassium methoxide are applied, the raw materials are simple and easy to obtain, the cost is low, the production process is simple, and the reaction temperature is low; the synthesized bisphenol A polyoxyethylene ether has narrow molecular weight distribution, high effective content and fewless by-products; the quality stability of the bisphenol A polyoxyethylene ether is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of synthesis of nonionic surfactants in organic chemistry, and in particular relates to a preparation method of bisphenol A polyoxyethylene ether with narrow molecular weight distribution. Background technique [0002] The esterified product obtained by the reaction of bisphenol A polyoxyethylene ether and acrylic acid is used as a reactive monomer diluent for UV light curing. As a rapidly developing new technology, UV light curing technology has been widely used in many high-tech fields such as: microelectronics industry, PCB circuit board, aerospace, banknote printing, high-end civilian use, etc. The performance index of UV light-curing products is better than that of conventional solvent-based coatings and ink products, which has made my country's UV light-curing industry have made great progress and is in a period of rapid development. [0003] Bisphenol A polyoxyethylene ether is a class of polymers wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C41/03C07C41/16C07C43/23
CPCC07C41/03C07C41/16C07C43/23
Inventor 潘晓宏蔡玉胡爱良张伟锋沈燕沈美勤郭双浦
Owner 浙江三江化工新材料有限公司
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