Method for synthesizing castor oil polyoxyethylene ether

The technology of a polyoxyethylene ether and a synthesis method is applied in the synthesis field of organic compounds, and can solve the problems such as few reports of the synthesis method, and achieve the effects of low equipment requirements, high yield and light color and luster.

Inactive Publication Date: 2008-07-30
王伟松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few repor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0010] Embodiment 1: add 600g castor oil and 1.1g powdery sodium methoxide in the reaction kettle, be warming up to 130 ℃, after vacuum dehydration 1 hour, add ethylene oxide 109g, after 150 ℃ of reaction is complete, be cooled to 80 ℃ out. material. The test data of this experimental product are: hydroxyl value of 137.7 and molecular weight of 1100.

Example Embodiment

[0011] Embodiment 2: add 400g castor oil and 1.1g solid KOH in the reaction kettle, be warming up to 130 ℃, after vacuum dehydration 1 hour, add ethylene oxide 1032g, after 150 ℃ of reaction is complete, be cooled to 80 ℃ and discharge. The test data of this experimental product are: hydroxyl value of 45.5 and molecular weight of 3329.

Example Embodiment

[0012] Embodiment 3: add the mixture of 500g castor oil and 1.1g powdery sodium methoxide and NaOH in the reaction kettle (mixing in a 1: 1 ratio), be warming up to 130 DEG C, after 1 hour of vacuum dehydration, add 860g of ethylene oxide, After the reaction at 150°C is complete, the temperature is lowered to 80°C for discharging. The test data of this experimental product are: hydroxyl value 60.3, molecular weight 2511.

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PUM

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Abstract

The invention relates to a synthetic method for polyoxyethylene castor oil, and belongs to the synthetic technical field of an organic compound. Castor oil and ethylene oxide are used as the raw material, and the polyoxyethylene castor oil is produced through polyreaction with the existence of a catalyst; the weight ratio between the castor oil and the ethylene oxide is 1: 0.145 to 2.98; the catalyst is any one component or the mixture of more than one component in solid sodium methoxide, sodium methoxide methanol solution, KOH, and NaOH, etc., and the adding amount of the catalyst is 0.05 to 0.2 percent of the weight percentage of the produced polyoxyethylene castor oil. Technological parameters and conditions such as the raw material proportioning, the adding amount of the catalyst, the polyreaction temperature and time, etc. are reasonably determined, the reaction condition is temperate, and the requirement on the equipment is low. The yield rate is high, no impurity can be generated, and the invention is environment friendly. The polyoxyethylene castor oil produced by the invention has light color, transparent appearance, good level dyeing performance, strong compatibility and wide molecular weight adjustment range.

Description

technical field [0001] The invention relates to a synthesis method of castor oil polyoxyethylene ether, which belongs to the technical field of synthesis of organic compounds. Background technique [0002] Castor oil polyoxyethylene ether is a good leveling agent for dyes, with excellent emulsification and leveling performance, good warm viscosity and biodegradability. The product is nonionic in alkaline and neutral media, and cationic in acidic media. It is used as a leveling agent for acid complex dyes, which can reduce the amount of sulfuric acid in the dyeing bath and reduce fabric damage; it can also be used as a leveling agent for neutral dyes and vat dyes, and a stripping agent for wool and nylon fabrics. However, its synthetic methods are rarely reported. Contents of the invention [0003] The purpose of the present invention is to provide a kind of synthetic method of castor oil polyoxyethylene ether with reasonable technology and good usability. [0004] The p...

Claims

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Application Information

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IPC IPC(8): C08G65/28
Inventor 王伟松王新荣孟照平马定连罗青
Owner 王伟松
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