Amino acid ionic liquid water-based additive and preparation method and application thereof

An ionic liquid and amino acid technology, applied in the field of amino acid ionic liquid water-based additives and their preparation, can solve problems such as environmental pollution, and achieve the effects of environmental friendliness, good solubility, and excellent anti-friction and anti-wear properties.

Inactive Publication Date: 2020-02-28
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ionic liquids that have been studied more at present are mostly concentrated on the imidazole-type ionic liquids containing halogen anions. has become an urgent problem to be solved

Method used

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  • Amino acid ionic liquid water-based additive and preparation method and application thereof
  • Amino acid ionic liquid water-based additive and preparation method and application thereof
  • Amino acid ionic liquid water-based additive and preparation method and application thereof

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[0037] The present invention also provides a preparation method of the amino acid ionic liquid water-based additive described in the above technical solution, comprising the following steps:

[0038] mixing tetraalkyl hydroxide, amino acid and water, and performing an acid-base neutralization reaction to obtain the amino acid ionic liquid water-based additive;

[0039] The amino acids include tryptophan, cysteine, lysine, phenylalanine, serine, methionine or histidine;

[0040] The number of carbons in the alkyl group in the tetraalkyl hydroxide is independently 1-18;

[0041] The tetraalkyl hydroxide is tetraalkyl phosphorus hydroxide or tetraalkyl ammonium hydroxide.

[0042] In the present invention, unless otherwise specified, the raw materials used are conventional commercially available products in this field.

[0043] In the present invention, the molar ratio of the tetraalkyl hydroxide to the amino acid is preferably 1:1˜1:1.4, more preferably 1:1.

[0044] The pres...

Embodiment 1

[0054] Tetrabutylphosphorus hydroxide and histidine were weighed at a molar ratio of 1:1, dissolved in water, and stirred at room temperature for 24 hours. After the reaction was finished, the solvent was evaporated under reduced pressure, the solid was dissolved in dichloromethane, washed with water to remove unreacted raw materials, then the organic phase was dried, and the solvent was evaporated under reduced pressure to obtain a white amino acid ionic liquid water-based additive (structural formula shown in formula 2 ).

[0055]

[0056] Among them, the calculated value of the mass spectrum of the cation part: 259.2549, the measured value: 259.2540, the calculated value of the mass spectrum of the anion part: 154.0617, the measured value: 154.0620.

Embodiment 2

[0058] Weigh tetrabutylphosphorus hydroxide and serine in a molar ratio of 1:1, dissolve in water, and react with stirring at room temperature for 24 hours. After the reaction was finished, the solvent was evaporated under reduced pressure, the solid was dissolved in dichloromethane, washed with water to remove unreacted raw materials, then the organic phase was dried, and the solvent was evaporated under reduced pressure to obtain a white amino acid ionic liquid water-based additive (structural formula is shown in formula 3 ).

[0059]

[0060] Among them, the calculated value of the mass spectrum of the cation part: 259.2549, the measured value: 259.2541, the calculated value of the mass spectrum of the anion part: 104.0348, the measured value: 104.0351.

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Abstract

The invention provides an amino acid ionic liquid water-based additive and a preparation method and application thereof, belonging to the technical field of organic compounds of lubricating oil additives. The structural formula of the amino acid ionic liquid water-based additive provided by the invention is shown as a formula 1 which is described in the specification. The amino acid ionic liquid water-based additive provided by the invention is biodegradable, environment-friendly and pollution-free, and has good solubility. The prepared amino acid ionic liquid water-based additive can also befully dissolved in organic solvents with different polarities, such as chloroform, methanol and water, and has excellent anti-friction and anti-wear properties and high bearing capacity when used as alubricant of a steel/steel friction pair.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil additive organic compounds, and in particular relates to an amino acid ionic liquid water-based additive and a preparation method and application thereof. Background technique [0002] Traditional petroleum-based lubricants can effectively improve anti-friction and anti-wear properties and reduce the wear rate of friction pairs, but traditional petroleum-based lubricants have high cost, low thermal conductivity, high flammability, low flash point, and are easy to cause environmental pollution and affect its widespread use. Compared with this, water-based additives have the advantages of low cost, good fire resistance and thermal conductivity, and environmental protection. However, during the use of water-based additives, water will cause serious corrosion on the metal surface, and the low viscosity of water makes it difficult to form an elastohydrodynamic lubricating film between friction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D233/64C07C229/28C07D209/20C07C229/36C07C229/08C07C323/58C07C209/00C07F9/54C10M133/46C10M133/08C10M133/44C10M135/26C10M133/06C10N30/06C10N30/12
CPCC07C229/08C07C229/28C07C229/36C07C323/58C07D209/20C07D233/64C07F9/5407C10M133/06C10M133/08C10M133/44C10M133/46C10M135/26
Inventor 周峰于强亮杨志权刘志鲁张朝阳蔡美荣刘维民
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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