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Alcohol ether carboxylate preparation method

A technology of alcohol ether carboxylate and alcohol ether, which is applied in the field of preparation of alcohol ether carboxylate, can solve the problems of difficulty in heat transfer and mass transfer, difficulty in improving conversion rate, unrealizable process, etc., and achieves simple process and easy process. The effect of control, big price advantage

Inactive Publication Date: 2015-12-09
ZHEJIANG HUANGMA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method is simple and easy to operate, but the reaction temperature is high, and the process cannot be realized for polyether with poor fluidity, and the viscosity of the reaction system increases with the production of alkyl ether carboxylate during the production process, and the heat transfer of the system And mass transfer is difficult, the conversion rate is difficult to improve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 330.1g (1mol) of AEO3 and 0.4g of tetrabutylammonium bromide, put them into a 1000mL four-neck flask equipped with a stirrer and a thermometer, heat to 40°C in a water bath, and stir for 0.5 hours. Then weigh 40.0g of sodium hydroxide and 116.48g of sodium chloroacetate and mix them evenly and slowly put them into a four-necked flask. After 1 hour of feeding, after feeding, keep the temperature at 40°C and continue to react for 3 hours to obtain viscous fatty alcohol ether carboxylate salt products.

[0026] Add 97.4 g of absolute ethanol into the four-necked flask, keep stirring at 40° C. for 1.0 hour, and stop heating. Remove inorganic salts and excess sodium chloroacetate by suction filtration while it is hot, and the filtrate is further dried by rotary evaporation, and absolute ethanol is recovered to obtain sodium alcohol ether carboxylate as a white solid. Sampling detection, the calculated yield was 95.1%.

[0027] In the above reaction, alcohol ether: al...

Embodiment 2

[0029] Weigh 421.9g (1mol) of isomerized tridecyl alcohol polyoxyethylene (5) ether and 1.35g of tributylamine, put them into a 1000mL four-necked flask equipped with a stirrer and a thermometer, heat to 50°C in a water bath, and stir for 0.5 Hour. Then weigh 67.3g of potassium hydroxide and 128.1g of sodium chloroacetate and mix them evenly and slowly put them into a four-neck flask. After 2 hours, after feeding, keep the temperature at 50°C and continue to react for 4 hours to obtain viscous fatty alcohol ether carboxylate salt products.

[0030] Add 185 g of absolute ethanol into the four-necked flask, keep stirring at 50° C. for 2.0 hours, and stop heating. Inorganic salts and excess sodium chloroacetate were removed by suction filtration while it was hot, the filtrate was further dried by rotary evaporation, and absolute ethanol was recovered to obtain isomeric sodium tridecanol polyoxyethylene (5) ether carboxylate as a white solid. Sampling detection, calculated yield...

Embodiment 3

[0033] Weigh 334.2g (0.5mol) of C12 alcohol polyoxyethylene (7) polyoxypropylene (3) ether and 3.5g of trimethylethylammonium hydroxide, and put them into a 1000mL four-necked flask equipped with a stirrer and a thermometer , heated to 60°C in a water bath, and stirred for 0.5 hours. Then weigh 55.6g of calcium hydroxide and 69.9g of sodium chloroacetate and mix them evenly and slowly put them into a four-neck flask. After 3 hours, after feeding, keep the temperature at 60°C and continue to react for 5 hours to obtain viscous fatty alcohol ether carboxylate salt products.

[0034] Add 185.3 g of absolute ethanol into the four-necked flask, keep stirring at 60° C. for 1.5 hours, and stop heating. Inorganic salts and excess sodium chloroacetate were removed by suction filtration while it was hot, the filtrate was further dried by rotary evaporation, and absolute ethanol was recovered to obtain isomeric sodium tridecanol polyoxyethylene (5) ether carboxylate as a white solid. S...

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PUM

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Abstract

The invention relates to a preparation method of alcohol ether carboxylate and belongs to the technical field of a surfactant. The alcohol ether carboxylate is prepared from alcohol ether and sodium chloroacetate in the presence of alkali metal hydroxide and a phase-transfer catalyst. The preparation method comprises putting alcohol ether and a phase-transfer catalyst into a reactor, mixing an alkali metal hydroxide and sodium chloroacetate to obtain a uniform mixture, putting the mixture into the reactor in batch, carrying out ageing, adding anhydrous ethanol into the reactor, carrying out filtration to remove inorganic salt and excess sodium chloroacetate, and carrying out distillation to remove anhydrous ethanol and to obtain a product. The preparation method of alcohol ether carboxylate has the advantages of simple processes, mild reaction conditions and high conversion rate.

Description

technical field [0001] The invention relates to a method for preparing a high-quality alcohol ether carboxylate, which belongs to the technical field of synthesis of anionic surfactants in organic chemistry. Background technique [0002] Alcohol ether carboxylate (AEC) belongs to anionic surfactants, because of its easy-to-obtain raw materials, mild nature, safe use, easy biodegradation and multi-functionality, it is called an environmentally friendly surfactant and can be used as a textile finishing agent, Cosmetics, hair care products, pesticide emulsifiers, etc. Sodium alcohol ether carboxylate used in the textile industry was first synthesized in 1934. In 1957, AEC was used in cosmetics. In 1964, the mildness, biodegradability and cleanability of AEC were reported. In 1976, a study pointed out that alcohol ether carboxylate does not interfere with the skin's moisture metabolism and resistance, and is an ideal cosmetic component. After entering the 1980s, due to the cha...

Claims

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Application Information

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IPC IPC(8): C07C67/31C07C67/54C07C69/708
CPCC07C67/31C07C67/54C07C69/708
Inventor 高洪军金一丰万庆梅糜泽峰
Owner ZHEJIANG HUANGMA TECH
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