Method for synthesizing methyl ricinoleate ethoxylate sulfonate

A technology of ethoxylate and ricinoleic acid, which is applied in the direction of sulfonate preparation, chemical instruments and methods, chemical/physical processes, etc., to achieve the effects of low reaction temperature, high conversion rate and short reaction time

Active Publication Date: 2017-04-26
CHINA RES INST OF DAILY CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation method of this surfactant

Method used

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  • Method for synthesizing methyl ricinoleate ethoxylate sulfonate
  • Method for synthesizing methyl ricinoleate ethoxylate sulfonate
  • Method for synthesizing methyl ricinoleate ethoxylate sulfonate

Examples

Experimental program
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Effect test

Embodiment 1

[0028] 30g (0.046mol) ricinoleic acid methyl ester ethoxylate (average molecular weight 1151, X average value is 13.2, Y average value is 5.9, iodine value is 22.5g / 100g), 100g deionized water, 100g isopropanol , 8.7g (0.084mol) sodium bisulfite, 1.5g tert-butyl peroxybenzoate and 0.13g ferric trichloride were added in a 500ml four-necked flask (ferric trichloride and sulfurous acid should be mixed in advance before feeding) Sodium hydrogen was dissolved in deionized water respectively), heated to 40°C, and reacted for 2h. After the reaction, the water and isopropanol were removed by rotary evaporation, dissolved in excess absolute ethanol, the salt was removed by hot filtration, and the ethanol was removed by rotary evaporation to obtain the product. The main indexes of the product are as follows: (1) the iodine value is 11.8g / 100g; (2) the mass fraction of ricinoleic acid methyl ester ethoxylate sodium sulfonate is 48.2%.

Embodiment 2

[0030] With 20g (0.031mol) methyl ricinoleic acid ethoxylate (average molecular weight 1151, X mean value is 13.2, Y mean value is 5.9, iodine value is 22.5g / 100g), 20g deionized water, 20g methanol, 3.6 g (0.035mol) sodium bisulfite, 1.2g tert-butyl peroxybenzoate and 0.11g ferric trichloride are added in a 250ml four-necked flask (ferric trichloride and sodium bisulfite should be mixed in advance before feeding were dissolved in deionized water), heated to 50°C, and reacted for 2.5h. After the reaction, the water and methanol were removed by rotary evaporation, dissolved with excess absolute ethanol, the salt was removed by hot filtration, and the ethanol was removed by rotary evaporation to obtain the product. The main indexes of the product are as follows: (1) the iodine value is 17.7g / 100g; (2) the mass fraction of ricinoleic acid methyl ester ethoxylate sodium sulfonate is 22.1%.

Embodiment 3

[0032] 30g (0.041mol) ricinoleic acid methyl ester ethoxylate (average molecular weight 739, X average value is 7.9, Y average value is 1.8, iodine value is 35.3g / 100g), 90g deionized water, 90g ethanol, 10g (0.096mol) sodium bisulfite, 1.6g tert-butyl peroxybenzoate and 0.15g ferric trichloride are added in the four-necked flask of 500ml (the ferric trichloride and sodium bisulfite should be separated in advance before feeding) dissolved in deionized water), heated to 40°C, and reacted for h. After the reaction, the water and ethanol were removed by rotary evaporation, dissolved with excess absolute ethanol, the salt was removed by hot filtration, and the ethanol was removed by rotary evaporation to obtain the product. The main indexes of the product are as follows: (1) the iodine value is 14.2g / 100g; (2) the mass fraction of ricinoleic acid methyl ester ethoxylate sodium sulfonate is 58.5%.

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Abstract

A method for synthesizing methyl ricinoleate ethoxylate sulfonate comprises the steps that methyl ricinoleate ethoxylate, sodium bisulfite, a catalyst, deionized water and higher alcohol are added to a reactor, stirred vigorously and subjected to a reaction at 30-55 DEG C for 2-3 h, wherein the mole ratio of the methyl ricinoleate ethoxylate to the sodium bisulfite is 1:(1-3.5), the use quantity of the catalyst is 4.5%-6.5% of the mass of the methyl ricinoleate ethoxylate, and the mass ratio of the higher alcohol, the deionized water and the methyl ricinoleate ethoxylate is (1-3.5):(1-3.5):1; after the reaction, water and the higher alcohol are removed through reduced-pressure distillation, obtained solids are dissolved with excessive absolute ethyl alcohol, salts in the solution are removed through hot filtration, ethyl alcohol is removed through reduced-pressure distillation, and a product is obtained. The method has the advantages of low reaction temperature, short reaction time and high conversion rate.

Description

technical field [0001] The invention relates to a method for synthesizing ricinoleic acid methyl ester ethoxylate sulfonate. Background technique [0002] Ricinoleic acid methyl ester ethoxylate is a typical non-ionic surfactant. Its molecular structure is quite special. Compared with ordinary fatty acid methyl ester ethoxylate, it has an extra branch similar to fatty alcohol The structure of polyoxyethylene ether, in addition, there is a carbon-carbon double bond in the molecule, so it has attracted widespread attention. [0003] Different anionic surfactants can be obtained by sulfonating ricinoleic acid methyl ester ethoxylate as raw material. Sulfonated with sulfur trioxide, and then neutralized with alkali to obtain ricinoleic acid methyl ester ethoxylate sulfonate / ricinoleic acid methyl ester ethoxylate sulfate, because the sulfonic acid group can replace the alpha hydrogen of the ester group, It can also replace the terminal hydrogen of branched polyoxyethylene ethe...

Claims

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Application Information

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IPC IPC(8): C07C303/32C07C309/17B01F17/08C09K23/08
CPCC07C303/32C09K23/00
Inventor 孙永强朱克华武华萍孙晋源张勇周婧洁梁慧斌丁莉荣
Owner CHINA RES INST OF DAILY CHEM IND
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