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A kind of synthetic method of low color value type polyether

A synthesis method and technology of color value, applied in the field of synthesis of low color value polyether, can solve problems such as long process operation, dark product color, cumbersome operation process, etc., to avoid by-products, reduce processing procedures and production costs, The effect of reducing moisture

Active Publication Date: 2018-03-09
ZHEJIANG HUANGMA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above preparation method has the characteristics suitable for most amine polyethers, but there are defects such as cumbersome operation process, long process operation, deep color of the product, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The synthesis method of the low-color polyether in this example, the specific procedure is: suck 204 g (2.0 mol) of 3-dimethylpropylamine impregnated with molecular sieves into a 2.5L glass-lined reactor, and start stirring when the temperature is raised to 40°C Slowly feed 352g (8.0mol) of ethylene oxide, the reaction temperature is maintained at 40-50°C, the pressure of the reactor is controlled below 0.4MPa, after the reaction is completed, it can be matured for 30 minutes and discharged.

Embodiment 2

[0025] Inhale 204g (2.0mol) of 3-dimethylpropylamine impregnated with molecular sieves into a 2.5L glass-lined reactor, and when the temperature is raised to 40°C with stirring, 704g (16.0mol) of ethylene oxide is slowly introduced, and the reaction temperature is maintained at 40-50°C, the pressure of the reactor is controlled below 0.4MPa, after the reaction is completed, it can be matured for 30 minutes and discharged.

Embodiment 3

[0031] Inhale 204g (2.0mol) of 3-dimethylpropylamine impregnated with molecular sieves into a 2.5L glass-lined reactor, and when the temperature is raised to 40°C with stirring, 176g (4.0mol) of ethylene oxide is slowly introduced, and the reaction temperature is maintained at 40-50°C, after passing ethylene oxide, continue to pass 232g (4.0mol) of propylene oxide into the reactor, the reaction temperature is maintained at 60-70°C, the pressure of the reactor is controlled below 0.4MPa, and the reaction is matured after the reaction 2 hours to discharge.

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PUM

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Abstract

The invention relates to a synthetic method of low color value polyether, belonging to the technical field of organic polymer compound synthesis. The synthetic method comprises the following steps: arranging an initiator 3-dimethyl propylamine in the vacuum state after dehydration pretreatment, heating the initiator to 40-70 DEG C and adding ethylene oxide or propylene oxide, thus synthesizing polyoxyethylene polyoxypropylene amine ether without catalysts, wherein the mole ratio of added ethylene oxide or propylene oxide to 3-dimethyl propylamine does not exceed 1 to 8. The synthetic method is applied to synthesis of polyoxyethylene polyoxypropylene ether and has the advantages of light color, few byproducts, and the like.

Description

technical field [0001] The invention relates to a method for synthesizing low-color-value polyether, and belongs to the technical field of organic macromolecule compound synthesis. Background technique [0002] 3-Dimethylpropylamine polyoxyethylene propylene ether is a nonionic surfactant, easily soluble in water, ethanol and toluene, widely used as emulsifier, wetting agent and dispersant. In the textile industry, it can be used as desizing agent and leveling agent; it can also be used as viscose fiber denaturing agent and spinning oil component. The metal processing industry is used as a preservative and lubricating cutting oil component; its weak cationic properties make it widely used in pesticide emulsifiable concentrates and suspension formulations, it can be used as a lubricant to promote the absorption, penetration and floating of water-soluble components, Used alone or compounded with other monomers for the production of pesticide emulsifiers. [0003] The existin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/26
CPCC08G65/2624C08G65/2696
Inventor 宋明贵金一丰俞芳高洪军
Owner ZHEJIANG HUANGMA TECH