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A kind of synthetic method of castor oil polyoxyethylene polyoxypropylene ether

A technology of polyoxyethylene polyoxypropylene ether and synthetic method, which is applied in the field of organic compound synthesis, can solve the problems of unreachable physical and chemical indicators, high product viscosity, dark color, etc., and achieve uniform quality, high transparency, and light color. Effect

Active Publication Date: 2017-05-10
ZHEJIANG HUANGMA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the domestic synthesis of castor oil polyoxyethylene polyoxypropylene ether adopts alkali-catalyzed process, and the products produced have problems such as high viscosity, dark color, opacity, and physical and chemical indicators that are not up to the level of similar foreign products, so they can only be used for oil production and textiles. industries with low requirements, but cannot be used in industries with high requirements such as daily chemical and medicine
Although boron trifluoride has also been reported as a catalyst, it is limited to a small amount of ethylene oxide addition.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 900g castor oil and 2.6g Mg-Al catalyst into the reaction kettle, raise the temperature to 110°C, vacuum dehydrate for 1 hour, add 85g of ethylene oxide, after the reaction is complete at 140°C, cool down to 100°C, add propylene oxide 55g, after the reaction is complete at 120°C, cool down to 90°C for degassing, and then cool down to 80°C to discharge; wherein, in this example, the Mg-Al catalyst is composed of magnesium nitrate and aluminum nitrate in a molar ratio of 3:1.

Embodiment 2

[0025] Add 200g castor oil and 2.8g Mg-Al catalyst into the reaction kettle, raise the temperature to 120°C, vacuum dehydrate for 1 hour, add 660g of ethylene oxide, after the reaction is complete at 150°C, cool down to 100°C, add propylene oxide 500g, after the reaction is complete at 115°C, cool down to 90°C for degassing, and then cool down to 80°C to discharge; wherein, in this example, the Mg-Al catalyst is composed of magnesium nitrate and aluminum nitrate in a molar ratio of 3:1.

Embodiment 3

[0027] Add 400g castor oil and 3.0g Mg-Al catalyst into the reaction kettle, raise the temperature to 115°C, vacuum dehydrate for 1 hour, add 565g of ethylene oxide, after the reaction is complete at 160°C, cool down to 100°C, add propylene oxide 620g, after the reaction is complete at 115°C, cool down to 90°C for degassing, and then cool down to 80°C to discharge; wherein, in this example, the Mg-Al catalyst is composed of magnesium nitrate and aluminum nitrate in a molar ratio of 3:1.

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Abstract

The invention relates to method for synthesizing castor oil polyoxyethylene polyoxypropylene ether, and belongs to the technical field of synthesis of organic compounds. Raw materials comprise castor oil, ethylene oxide and epoxypropane, A Mg-Al catalyst is added to the castor oil, and vacuum dehydration is carried out for 1-3 hours; ethylene oxide is added, temperature is kept at 110 DEG C to 180 DEG C, epoxypropane is added after curing is carried out for 1-5 hours, and curing is carried out for 3-10 hours at the temperature of 110 DEG C to 180 DEG C; the temperature is reduced to 80 DEG C to 120 DEG C, after vacuum degassing is carried out for 0.5-3 hours, the temperature is reduced to 40 DEG C to 80 DEG C, and discharging is carried out to obtain finished castor oil polyoxyethylene polyoxypropylene ether. The method is applied to synthesizing castor oil polyoxyethylene polyoxypropylene ether, and synthesized castor oil polyoxyethylene polyoxypropylene ether has the advantages of being light in color and luster, transparent in appearance, excellent in physicochemical index, high in compatibility performance, large in molecular weight control range and the like, can be used for the industries of daily use chemicals, medicine and the like with high requirements.

Description

technical field [0001] The invention relates to a synthesis method of castor oil polyoxyethylene polyoxypropylene ether, which belongs to the technical field of organic compound synthesis. Background technique [0002] Castor oil series products have various specifications according to the different addition numbers of EO and PO. The series of products are dispersed in water or easily soluble in water, fatty acid or other organic solvents. In the metal processing industry, it is used to prepare metal cutting fluid; in the textile industry, it is used as a component of chemical fiber oil agent, which has emulsifying and antistatic properties; in the pharmaceutical industry, it is used as an emulsifier to make liniments, creams, emulsions, etc. ; as a deinking agent in the ink industry, with the functions of dispersing, emulsifying, and collecting; as a demulsifying agent for crude oil dehydration, it has good emulsifying and solubilizing effects, and has green surface activit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/26
Inventor 高洪军金一丰万庆梅糜泽锋
Owner ZHEJIANG HUANGMA TECH
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