A synthetic method of cumenyl polyoxyethylene ether

A technology of cumyl polyoxyethylene ether and synthesis method, which is applied in the field of organic compound synthesis, and achieves the effects of stable quality, high double bond retention rate and narrow molecular weight distribution

Inactive Publication Date: 2016-03-16
ZHEJIANG HUANGMA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] There are few reports on the existing synthetic technology of cumyl polyoxyethylene ether

Method used

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  • A synthetic method of cumenyl polyoxyethylene ether
  • A synthetic method of cumenyl polyoxyethylene ether
  • A synthetic method of cumenyl polyoxyethylene ether

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of synthetic method of cumenyl polyoxyethylene ether of the present embodiment, comprises the steps:

[0028] 1) Add 42.0 parts of isopropenyl cumenol to the reaction kettle, add 0.45 parts of catalyst metal sodium within 30 minutes, control the reaction temperature to 20-30 ° C, and the reaction time is 0.5 hours; after the reaction, put the product into 798.0 Parts of isopropenyl cumenol, nitrogen replacement, heating up to 90°C, feeding 960 parts of ethylene oxide, controlling the reaction temperature to 90-105°C, and the reaction time is 4.0 hours; after the reaction, cool down to 70°C and discharge to obtain A cumenyl polyoxyethylene ether oligomer with a molecular weight of 300.

[0029] 2) Add 90 parts of the cumenyl polyoxyethylene ether oligomer with a molecular weight of 300 obtained in the step 1) into the reactor, add 1.8 parts of catalyst sodium metal within 30 minutes, and control the reaction temperature to 30-40°C , the reaction time was 0.5 hour...

Embodiment 2

[0032] A kind of synthetic method of cumenyl polyoxyethylene ether of the present embodiment, comprises the steps:

[0033] 1) Add 36.1 parts of isopropenyl cumenol in the reactor, add 0.32 parts of catalyst metal potassium within 50 minutes (begin to add catalyst within 50 minutes and complete within 50 minutes after adding the catalyst), and control the reaction temperature to 25-35°C, the reaction time is 0.5 hours; after the reaction, put the product into 383.9 parts of isopropenyl cumenol, replace it with nitrogen, raise the temperature to 90°C, feed 630 parts of ethylene oxide, and control the reaction temperature to 90 -105°C, the reaction time was 5.0 hours; after the reaction, the temperature was lowered to 70°C and discharged to obtain a cumenyl polyoxyethylene ether oligomer with a molecular weight of 350.

[0034] 2) Add 84 parts of the cumenyl polyoxyethylene ether oligomer with a molecular weight of 350 obtained in the step 1) to the reactor, add 2.4 parts of cat...

Embodiment 3

[0037] A kind of synthetic method of cumenyl polyoxyethylene ether of the present embodiment, comprises the steps:

[0038] 1) Add 36 parts of isopropenyl cumenol in the reactor, add 0.21 parts of metal sodium and 0.21 parts of metal potassium catalyst within 50 minutes, control the reaction temperature to 30-40 ° C, and the reaction time is 0.8 hours; Put the product into 300 parts of isopropenyl cumenol, replace it with nitrogen, raise the temperature to 90°C, feed 504 parts of ethylene oxide, control the reaction temperature to 90-105°C, and the reaction time is 5.5 hours; after the reaction, cool down to A cumenyl polyoxyethylene ether oligomer with a molecular weight of 350 was obtained by discharging at 70°C.

[0039] 2) Add 84 parts of cumenyl polyoxyethylene ether oligomers with a molecular weight of 350 obtained in step 1) in the reactor, add 1.5 parts of metal sodium and 1.5 parts of metal potassium catalyst within 50 minutes, and control the reaction The temperature ...

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Abstract

The invention relates to a synthetic method of cumenyl polyoxyethylene ether and belongs to the technical field of organic compound synthesis. Isopropenyl cumenol and ethylene oxide are adopted as raw materials. The method includes reacting 5-20% by weight of the isopropenyl cumenol with a first catalyst, adding the reaction product into the rest of the isopropenyl cumenol, adding the ethylene oxide, reacting to prepare a cumenyl polyoxyethylene ether oligomer, reacting 5-20% by weight of the cumenyl polyoxyethylene ether oligomer with a second catalyst, adding the reaction product to the rest of the cumenyl polyoxyethylene ether oligomer, adding the ethylene oxide, and reacting to prepare the cumenyl polyoxyethylene ether. The cumenyl polyoxyethylene ether prepared by the method has advantages of low contents of byproducts such as polyethylene glycol, narrow molecular weight distribution, high double-bond protection rates, and the like, and is suitable for synthesis of high-performance polycarboxylate-type water reducing agents.

Description

technical field [0001] The invention relates to a synthesis method of cumenyl polyoxyethylene ether, which belongs to the technical field of organic compound synthesis. Background technique [0002] With the development of construction technology, the continuous improvement of construction technology requirements and the rapid development of concrete technology, the level of polycarboxylate high-performance water reducer and its application technology in my country has been continuously improved. Polycarboxylate superplasticizer has outstanding advantages such as low dosage, good slump retention performance, low concrete shrinkage rate, strong molecular structure adjustability, high performance potential, and clean production process, which can greatly improve the workability of concrete. Performance, greatly improve the compressive strength and durability of concrete, widely used in railways, highways, construction, port engineering, marine engineering, hydropower, nuclear ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/28
CPCC08G65/2609C08G65/2648C08G2650/58
Inventor 向松柏金一丰万庆梅董楠叶志勇
Owner ZHEJIANG HUANGMA TECH
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