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Chelated surfacant

A surfactant and chelating technology, applied in the field of surfactants, can solve the problems of EDTA degradability and complicated production process, and achieve the effect of strong surface activity and chelating ability, short process flow and broad application prospects

Inactive Publication Date: 2005-11-23
长春师范学院 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Among the chelating surfactants, EDTA derivative surfactants are more researched, but their production process is relatively complicated, and highly toxic cyanide is used in most production processes, and the degradability of EDTA itself has been recently restricted. question

Method used

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  • Chelated surfacant
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Examples

Experimental program
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Effect test

Embodiment Construction

[0013] 1. Synthesis of monolauryl iminodisuccinate

[0014] A whole set of Soxhlet extraction device is used as the reaction device. The flask was filled with 24.9 g (0.1 mol) of dry iminodisuccinic acid, 18.6 g (0.1 mol) of lauryl alcohol, 0.5 ml of sulfuric acid and 600 ml of solvent dimethylformamide. 100 grams of anhydrous magnesium sulfate are packed in a filter paper bucket in the extractor to absorb the water taken out in the reaction system. The reaction was stirred and heated to reflux for 15 hours, then stopped. The mixture in the flask was distilled under reduced pressure to recover most of the solvent, about 480 ml of dimethylformamide, the residue was cooled, poured into 1 liter of cold water to form a precipitate, stirred and washed the precipitate, filtered to collect the precipitate, the precipitate Pour it into 1 liter of 0.01 mole sodium bicarbonate solution, stir and wash, filter, wash the precipitate with water, and dry the precipitate under vacuum at 40-...

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PUM

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Abstract

This invention relates to a chelating surface activator, which belongs to fine chemistry technology field. The chemical constitutional formula is the right one, wherein X2=O,R2=H,X1=O or N,R1=aliphatic hydrocarbon radical; or X1=O, R1=H,X2=O or N,R2aliphatic hydrocarbon radical. The surface activator has good surface activity and chelating ability at the same time; it can improve the salt endurance and hard water resistance greatly when companied with other surface activity.

Description

Technical field: [0001] The invention belongs to the technical field of fine chemicals and relates to a surfactant. Background technique: [0002] Among the chelating surfactants, EDTA derivative surfactants are more researched, but their production process is relatively complicated, and highly toxic cyanide is used in most production processes, and the degradability of EDTA itself has been recently restricted. question. Invention content: [0003] The technical problem to be solved by the invention is to disclose a degradable chelating surfactant. [0004] The chelating surfactant provided by the invention is obtained by reacting iminodisuccinic acid with fatty alcohol or fatty amine in the presence of a catalyst. [0005] The structural general formula of iminodisuccinate derivative surfactant of the present invention is: [0006] [0007] where X 2 =O,R 2 =H,X 1 = O or N, R 1 = aliphatic hydrocarbon group; [0008] or where X 1 =O,R 1 =H,X 2 = O or N, R 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K23/28
Inventor 李志宏刘启民李晓莉张永宏赵伦
Owner 长春师范学院
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