Imidazoline amophoteric surface active agent and its synthesis technology

A technology of surfactant and imidazoline, which is applied in the field of imidazoline amphoteric surfactant and its synthesis process, to achieve excellent cleaning and detergency performance, high purity, and performance-enhancing effects

Inactive Publication Date: 2007-02-14
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

At present, there is no relevant report about imidazoline phosphate amphoteric surfactant with carboxyethyl group and its synthesis process

Method used

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  • Imidazoline amophoteric surface active agent and its synthesis technology
  • Imidazoline amophoteric surface active agent and its synthesis technology

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Melt 1 mol of lauric acid, add 1.1 mol of hydroxymethylethylenediamine, under the condition of residual pressure of 60mmHg and stirring, raise the temperature to 210°C at a rate of 3°C / min, and remove the reaction water in time, at this temperature Keep it for 1 hour, and then distill off excess hydroxymethylethylenediamine at a residual pressure of 10 mmHg to obtain an imidazoline intermediate. Add 1.2 mol of water and 0.1 mol of sodium hydroxide as a catalyst to the synthesized imidazoline intermediate, and react at 60° C. for 4 hours with sufficient stirring. After the imidazoline ring was completely hydrolyzed and opened, the temperature was raised to 110°C, and excess water was distilled off. After that, 1 mol of butyl acrylate was added dropwise, fully stirred and controlled at 70° C., and kept fully stirred and at the reaction temperature after the addition was completed, and the reaction was continued for 3 hours. Add 0.5 mol of phosphorus pentoxide in batches ...

Embodiment 2

[0030] Melt 1mol of palmitic acid first, add 1.3mol of hydroxyethylethylenediamine, under the condition of residual pressure of 70mmHg and stirring, raise the temperature to 220°C at a rate of 5°C / min, and remove the reaction water in time, at this temperature Keep it under the pressure for 1.5h, and then distill off excess hydroxyethylethylenediamine under the residual pressure of 15mmHg to obtain the imidazoline intermediate. Add 1.1 mol of water and 0.08 mol of potassium hydroxide as a catalyst to the synthesized imidazoline intermediate, and react at 80° C. for 2 hours under sufficient stirring. After the imidazoline ring is completely hydrolyzed and opened, the temperature is raised to 120°C, and excess water is distilled off. After that, 1 mol of ethyl acrylate was added dropwise, fully stirred and controlled at 60° C., and kept fully stirred and at the reaction temperature after the addition was completed, and the reaction was continued for 4 hours. Add 0.5 mol of phos...

Embodiment 3

[0032] First melt 1 mol of cocoic acid, add 1.5 mol of hydroxypropyl ethylenediamine, under the condition of residual pressure of 80mmHg and stirring, rise to 240 ℃ with a heating rate of 8 ℃ / min, and remove the reaction water in time. Keep at the temperature for 0.5h, and then distill off excess hydroxypropylethylenediamine at a residual pressure of 20mmHg to obtain an imidazoline intermediate. Add 1.4 mol of water and 0.07 mol of sodium hydroxide as a catalyst to the synthesized imidazoline intermediate, and react at 95° C. for 1 hour with full stirring. After the imidazoline ring is completely hydrolyzed and opened, the temperature is raised to 130°C, and excess water is distilled off. After that, 1 mol of propyl acrylate was added dropwise, fully stirred and controlled at 80° C., and kept fully stirred and at the reaction temperature after the addition was completed, and the reaction was continued for 2 hours. Add 0.5 mol of phosphorus pentoxide in batches to the reaction...

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Abstract

The present invention is amphoteric imidazoline surfactant in the structure as shown and its synthesis. The amphoteric imidazoline surfactant of the present invention contains phosphate ester radical and carboxyethyl radical and has improved product performance.

Description

technical field [0001] The invention belongs to an imidazoline amphoteric surfactant and a synthesis process thereof, in particular to an imidazoline phosphate amphoteric surfactant with a carboxyethyl group and a synthesis process thereof. Background technique [0002] Imidazoline amphoteric surfactant is a kind of surfactant with excellent performance. At present, there are many reports on the synthesis of imidazoline amphoteric surfactants in the world, most of which are imidazoline carboxylate and sulfonate amphoteric surfactants. There are few research reports on imidazoline phosphate surfactants. Patent CN87104560.5 reacts fatty acids with polyamine compounds and ethylene oxide, and then reacts with phosphorus pentoxide to obtain phosphate imidazoline derivatives. It is a kind of chemical agent with corrosion and scale inhibition effect for oil field sewage treatment and reinjection water system. Li Shuan and Huang Chao used long-chain fatty acids, hydroxyethylethyle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/141C07F9/143
Inventor 王丰收李春霞杜志平王万绪李佩秀韩建英樊文俊
Owner CHINA RES INST OF DAILY CHEM IND
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