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Synthesis method of polyoxyethylene ether alkylamine cationic surfactant

A technology of polyoxyethylene ether alkylamine and surfactant, which is applied in the field of synthesis of polyoxyethylene ether alkylamine cationic surfactants, and can solve problems such as low yield and long reaction time

Active Publication Date: 2021-09-14
SHANDONG DAMING FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current production of polyoxyethylene ether cationic surfactants has the problems of long reaction time and low yield

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1: Add 59g of ethylene glycol butyl ether and 3g of solid acid catalyst into the reaction kettle, stir at 70°C for 1 hour, then add 48g of epichlorohydrin at a rate of 2 ml / min, and control the reaction temperature at 70°C. Stirring at a rotating speed of 90r / min, the reaction time was 2h, and after the reaction was completed, the content of residual epichlorohydrin in the titrated product was determined by headspace gas chromatography, and the calculated conversion rate was 98.2%. Chlorohydroxypropyl glycol butyl ether was obtained. After the reaction was finished, excess epichlorohydrin was removed by distillation under reduced pressure, and the chlorine ion content in the product was determined by hydrolysis with alkali, and the calculated yield of chlorohydroxypropyl butyl glycol butyl ether was 98.2%.

[0023] Step 2: Add 107g of dodecyldimethyl tertiary amine and 60ml of propylene glycol into the reaction kettle, mix well and raise the temperature to 85°C, an...

Embodiment 2

[0026] Step 1: Add 159g of commercially available AEO-3 sample and 5g of solid acid catalyst into the reaction kettle, stir at 60°C for 1h, then add 48g of epichlorohydrin at a rate of 4 ml / min, raise the temperature to 60°C, and keep it warm for 4h. Prepare chlorohydroxypropyl polyoxyethylene ether. After the reaction was over, the excessive epichlorohydrin was distilled off under reduced pressure, and the chlorine ion content in the product was determined by adding alkali hydrolysis, and the calculated chlorohydroxypropyl polyoxyethylene ether yield was 97.5%.

[0027] Step 2: Add 60ml of absolute ethanol to 107g of dodecyl dimethyl tertiary amine, raise the temperature to 80°C, add the chlorohydroxypropyl polyoxyethylene ether prepared in step 1 at a speed of 7 ml / min, and complete the addition After heat preservation for 3 hours, 40% aqueous sodium hydroxide solution was added to adjust the pH to 9-10, the reaction temperature was raised to 100°C, and the reflux reaction w...

Embodiment 3

[0030] Step 1: Add 269g of commercially available AEO-9 sample and 6g of solid acid catalyst into the reaction kettle, stir at 60°C for 1h, then add 44g of epichlorohydrin at a rate of 4 ml / min, stir and keep at 60°C for 4h to obtain Chlorohydroxypropyl polyoxyethylene ether. After the reaction was over, the excessive epichlorohydrin was distilled off under reduced pressure, and the chlorine ion content in the product was determined by alkali hydrolysis, and the calculated and determined chlorohydroxypropyl polyoxyethylene ether yield was 97.6%.

[0031] Step 2: Add 98g of dodecyldimethyl tertiary amine and 60ml of ethanol into the reaction kettle, stir and raise the temperature to 70°C, and add the chlorohydroxypropyl polyoxyethylene ether prepared in step 1 at a speed of 8 ml / min After the addition, keep the reaction for 4 hours, add 30% sodium hydroxide aqueous solution to adjust the pH to 9-10, raise the reaction temperature to 100 ° C, continue to reflux and stir the reac...

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PUM

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Abstract

The invention relates to a synthesis method of a polyoxyethylene ether alkylamine cationic surfactant, which is characterized in that fatty alcohol-polyoxyethylene ether, epichlorohydrin and alkyl tertiary amine are subjected to polymerization reaction under the action of a catalyst to obtain the polyoxyethylene ether alkylamine cationic surfactant. The method has the characteristics of short reaction time and high yield. The product provided by the invention has excellent emulsifying and wetting properties, is not influenced in acid-base and high-salt environments, and is suitable for being used in operations such as oilfield acidification, well drilling, water injection, viscosity reduction of thickened oil and the like.

Description

technical field [0001] The invention relates to a synthesis method of a polyoxyethylene ether alkylamine cationic surfactant. Background technique [0002] Surfactants play an important role in industrial and agricultural production and people's daily life. With the rapid development of chemical industry technology, the types and uses of surfactants are more extensive, and the products are being developed in the direction of diversification and serialization. They are used in Functional surfactants with excellent emulsifying, wetting, and dispersing properties in specific fields have attracted more and more attention. [0003] Polyoxyethylene ether cationic surfactants have broad application prospects in oilfield development due to their superior properties of sterilization, salt resistance and emulsification. However, there are few reports on polyoxyethylene ether cationic surfactants. Jilin Institute of Chemical Technology reported a polyoxyethylene ether cationic surfac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C217/28C07C213/06B01F17/18B01F17/42C09K23/18C09K23/42
CPCC07C213/06C07C217/28
Inventor 李国利
Owner SHANDONG DAMING FINE CHEM CO LTD
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