Alkyl-iminodisuccinate chelating surfactant and method for synthesizing same

A technology of alkyliminodisuccinate, alkyliminodisuccinic acid, applied in chemical instruments and methods, dissolution, chemical/physical process, etc., can solve pipeline blockage or form new deposits on the surface, The builder effect of sodium metasilicate is not very good, the production cost of washing products increases, etc., to achieve the effects of excellent surface activity and chelating ability, low price and mild conditions

Inactive Publication Date: 2010-03-31
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

4A zeolite was developed and produced in China in the early 1990s. Although this substance can soften water, it increases the production cost of washing products. Since this substance is insoluble in water, it will deposit on clothes, and 4A zeolite will deposit in the discharged wastewater. It will cause pipeline blockage or form new deposits on the surface, which will also be a heavy burden on the environment and ecology; the washing effect of sodium metasilicate is not very good, and it can only play a partial washing effect; δ- Although layered sodium silicate has excellent

Method used

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  • Alkyl-iminodisuccinate chelating surfactant and method for synthesizing same
  • Alkyl-iminodisuccinate chelating surfactant and method for synthesizing same
  • Alkyl-iminodisuccinate chelating surfactant and method for synthesizing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Alkyl imino disuccinate chelating surfactant, its structural formula is as shown in the following formula:

[0025]

[0026] where R is C 12 h 25 , Y is Na.

[0027] The preparation method of alkylimino disuccinate chelating surfactant is as follows:

[0028] (1) according to the mol ratio dodecylamine of substance: maleic anhydride: the ratio of sodium hydroxide=1:2:4 takes by weighing fatty primary amine 21.0Kg, maleic anhydride 22.2Kg and sodium hydroxide 18.1Kg, first hydrogen Sodium oxide is made into the aqueous solution that mass concentration is 25%, after adding maleic anhydride in the alkali solution and dissolving, then add dodecylamine, then add 63.7Kg ethanol in the above-mentioned mixed solution, finally add and account for 6 % copper chloride as catalyst.

[0029] (2) Add the above solution into a high-pressure reactor equipped with a stirring device for reaction, react at a reaction temperature of 140° C. and a reaction pressure of 0.3 MPa for 20 ...

Embodiment 2

[0032] Alkyl imino disuccinate chelating surfactant, its structural formula is as shown in the following formula:

[0033]

[0034] where R is C 18 h 37 , Y is K.

[0035] The preparation method of alkylimino disuccinate chelating surfactant is as follows:

[0036] (1) take fatty primary amine 23.2Kg, maleic anhydride 23.4Kg and potassium hydroxide 24.15Kg in the ratio of the mol ratio octadecylamine of substance: maleic anhydride: potassium hydroxide=1: 3: 5, first hydrogen Potassium oxide is made into an aqueous solution with a mass concentration of 35%, then maleic anhydride is added to the alkali solution for dissolution, then octadecylamine is added, then 45Kg ethanol is added to the above mixed solution, and finally 5% of the total mass of the reactants is added cuprous chloride as a catalyst.

[0037] (2) Add the above solution into a high-pressure reactor equipped with a stirring device for reaction, react at a reaction temperature of 120° C. and a reaction pres...

Embodiment 3

[0040] Alkyl imino disuccinate chelating surfactant, its structural formula is as shown in the following formula:

[0041]

[0042] where R is C 16 h 33 , Y is NH 4 .

[0043] The preparation method of alkylimino disuccinate chelating surfactant is as follows:

[0044] (1) Take by weighing fatty amine 20.8Kg, maleic anhydride 31.2Kg and sodium hydroxide 27.57Kg in the ratio of the mol ratio hexadecylamine: maleic anhydride: sodium hydroxide=1: 4: 8, first hydrogen oxidize Sodium is made into the aqueous solution that mass concentration is 27%, after adding maleic anhydride in the alkali solution and dissolving, then add hexadecylamine, then add 76Kg ethanol in the above-mentioned mixed solution, finally add and account for reactant gross mass 4% Copper acetate was used as a catalyst.

[0045] (2) Add the above solution into a high-pressure reactor equipped with a stirring device for reaction, react at a reaction temperature of 110° C. and a reaction pressure of 2 MPa f...

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Abstract

The invention provides a alkyl-iminodisuccinate chelating surfactant, wherein in the structural formula, R represents paraffin base, and Y represents H, Na, K, or NH4. The method comprises coupling ahydrophobic long carbon chain onto an N atom of iminodisuccinate, thereby making the whole molecule has lipophilicity as well as hydrophilicity. Alkyl-iminodisuccinate is a novel surfactant, and simultaneously has excellent surface activity and chelating capability.

Description

technical field [0001] The invention relates to a class of alkylaminodisuccinate chelating surfactants and a synthesis method thereof, in particular to alkyliminodisuccinic acid and its salt surfactants and a synthesis method thereof. Background technique [0002] Because of its excellent complexation and anti-redeposition properties, sodium tripolyphosphate was once widely used in the detergent preparation industry as a detergent builder. However, with the enhancement of people's awareness of environmental protection, they are increasingly aware of the increasingly serious environmental problems caused by the large-scale use of sodium tripolyphosphate. eutrophication phenomenon. Phosphorus is currently being banned worldwide. The National Environmental Protection Agency has been conducting certification for phosphorus-free laundry detergents since 1996, and banned the sale of phosphorus-containing laundry detergent in areas around inland lakes and reservoirs. Therefore, sy...

Claims

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Application Information

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IPC IPC(8): B01F17/28C09K23/28
Inventor 王军杨许召李刚森
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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