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Synthesis method of secondary alcohol polyoxyethylene ether

A technology of secondary alcohol polyoxyethylene ether and polyoxyethylene ether, which is applied in the field of synthesis of secondary alcohol polyoxyethylene ether, and can solve the problems of small residual amount of secondary alcohol and large residual amount of secondary alcohol

Active Publication Date: 2020-07-10
SHANGHAI DUOLUN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] What the present invention aims to solve is the technical problem that the residual amount of secondary alcohol is large in the secondary alcohol polyoxyethylene ether product obtained by the reaction of secondary alcohol and ethylene oxide under catalyst conditions in the prior art, and provides the synthesis of secondary alcohol polyoxyethylene ether method, the method has the advantage of less secondary alcohol residue in the secondary alcohol polyoxyethylene ether product

Method used

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  • Synthesis method of secondary alcohol polyoxyethylene ether

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]Put 200g of secondary tridecyl alcohol and 0.5g of metallocene catalyst into a 1-liter high-pressure reactor with stirring, electric heating jacket and inner water-cooling coil, seal the high-pressure reactor, start stirring, nitrogen replacement three times, at a temperature of 100°C and The pressure of -0.096MPa is evacuated and dehydrated for 30 minutes, then slowly feed ethylene oxide into the reactor kettle, control the reaction temperature at 120°C and the reaction pressure to be 0.20MPa, until the total amount of ethylene oxide fed is 264g, Stop feeding ethylene oxide, then maintain the reaction temperature until the pressure of the reactor no longer drops, indicating that the aging reaction is completed, cool the temperature to 60° C. and add 1 g of lactic acid for neutralization to obtain a secondary alcohol polyoxyethylene (6) ether product.

[0036] The residual secondary alcohol in the product is measured by gas chromatography, and the secondary alcohol residu...

Embodiment 2

[0038] Put 200g of secondary tridecanol and 1g of metallocene catalyst into a 1-liter high-pressure reactor with stirring, electric heating jacket and inner water-cooling coil, seal the high-pressure reactor, start stirring, nitrogen replacement three times, at a temperature of 100°C and - The pressure of 0.096MPa was evacuated and dehydrated for 30 minutes, and then ethylene oxide was slowly passed into the reactor kettle, the reaction temperature was controlled at 120°C and the reaction pressure was 0.20MPa, until the total amount of ethylene oxide was 264g, stop Feed ethylene oxide, and then maintain the reaction temperature until the pressure of the reactor no longer drops, indicating that the aging reaction is complete, cool the temperature to 60° C. and add 1 g of lactic acid for neutralization to obtain a secondary alcohol polyoxyethylene (6) ether product.

[0039] The residual secondary alcohol in the product is measured by gas chromatography, and the secondary alcohol...

Embodiment 3

[0041] Put 200g of secondary tridecyl alcohol and 1.5g of metallocene catalyst into a 1-liter high-pressure reactor with stirring, electric heating jacket and inner water-cooling coil, seal the high-pressure reactor, start stirring, nitrogen replacement three times, at a temperature of 100°C and The pressure of -0.096MPa is evacuated and dehydrated for 30 minutes, then slowly feed ethylene oxide into the reactor kettle, control the reaction temperature at 120°C and the reaction pressure to be 0.20MPa, until the total amount of ethylene oxide fed is 264g, Stop feeding ethylene oxide, then maintain the reaction temperature until the pressure of the reactor no longer drops, indicating that the aging reaction is completed, cool the temperature to 60° C. and add 1 g of lactic acid for neutralization to obtain a secondary alcohol polyoxyethylene (6) ether product.

[0042] The residual secondary alcohol in the product is measured by gas chromatography, and the secondary alcohol resid...

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Abstract

The invention relates to a synthesis method of secondary alcohol polyoxyethylene ether. The technical problem that in the prior art, the conversion rate of secondary alcohol is low or the residual amount of secondary alcohol in a secondary alcohol polyoxyethylene ether product is large is mainly solved. According to the technical scheme, the synthesis method of the secondary alcohol polyoxyethylene ether comprises: in the presence of a catalyst, initiating an ethylene oxide polymerization reaction by taking secondary alcohol as an initiator to obtain a secondary alcohol polyoxyethylene ether product, wherein the catalyst comprises a component A and / or a component B; the component A is piperidine oxide; the component B comprises (1) metallocene and (2) alkylaluminoxane; and the metal in themetallocene is selected from IVB group transition metal elements. The technical problem is better solved through the technical scheme, and the method can be used for industrial production of secondary alcohol polyoxyethylene ether.

Description

technical field [0001] The invention relates to a synthesis method of secondary alcohol polyoxyethylene ether. Background technique [0002] Secondary alcohol polyoxyethylene ether is a product obtained by initiating the polymerization of ethylene oxide with secondary alcohol as the initiator in the presence of a catalyst. Secondary alcohol polyoxyethylene ether has excellent penetration, emulsifier, wetting and cleaning agent, and does not contain APEO. It can be used in combination with other types of anionic, nonionic and cationic surfactants, and has outstanding synergistic effects. It can greatly reduce the consumption of additives and achieve good cost performance. At present, the conversion rate of secondary alcohol polyoxyethylene ether is low and the residual amount of secondary alcohol is high, which seriously affects the yield and production capacity of the product. Therefore, it is hoped to find a method to improve the conversion rate of secondary alcohol polyox...

Claims

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Application Information

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IPC IPC(8): C08G65/28
CPCC08G65/2609C08G65/2672C08G65/269C08G65/2654C08G65/266
Inventor 张江锋侯海育王建臣李翔江晓晨徐兴建
Owner SHANGHAI DUOLUN CHEM
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