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Carboxyl imidazole proton type ionic liquid as well as preparation method and application thereof

A technology of ionic liquid and salt carboxylimidazole, which is applied in the field of carboxylimidazole proton-type ionic liquid and its preparation, can solve the problems of soil pollution and water eutrophication, etc., and achieve strong structural novelty, excellent anti-friction and anti-wear properties, and raw materials Inexpensive and easy to get effects

Active Publication Date: 2022-01-28
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 excessive use of such additives will cause environmental pollution problems such as soil pollution and water eutrophication. Therefore, the development of environmentally friendly lubricating function additives is an urgent need for my country's equipment manufacturing industry and has broad application prospects.

Method used

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  • Carboxyl imidazole proton type ionic liquid as well as preparation method and application thereof
  • Carboxyl imidazole proton type ionic liquid as well as preparation method and application thereof
  • Carboxyl imidazole proton type ionic liquid as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) First, dissolve imidazole, potassium hydroxide, potassium carbonate and tetrabutylammonium bromide in a round-bottomed flask filled with dichloromethane, and stir at room temperature for 2 hours. Then, ethyl acetate was slowly added dropwise into the dichloromethane system, and refluxed at 25°C for 10h. After filtering and washing with saturated saline for several times to obtain a neutral solution, and drying with anhydrous sodium sulfate, the organic phase was distilled off under reduced pressure at room temperature to obtain an oily substance which is ethyl acetate imidazole. Then, ethyl acetate imidazole was dissolved in distilled water, and the pH value of the solution was adjusted to 1 by adding concentrated sulfuric acid dropwise, and refluxed at 60°C for 10 hours. After cooling, the concentrated sulfuric acid was removed with barium chloride, and the moisture was removed by distillation under reduced pressure, that is Can get imidazole acetate;

[0034] (2)...

Embodiment 2

[0036] (1) First, dissolve imidazole, potassium hydroxide, potassium carbonate and tetrabutylammonium bromide in a round-bottomed flask filled with dichloromethane, and stir at room temperature for 4 hours. Then, ethyl hexanoate was slowly added dropwise into the dichloromethane system, and refluxed at 35°C for 15h. After filtering and washing with saturated saline for several times to obtain a neutral solution, and drying with anhydrous sodium sulfate, the organic phase was distilled off under reduced pressure at room temperature to obtain an oily substance which is ethyl imidazole hexanoate. Then, ethyl caproate imidazole was dissolved in distilled water, and the pH value of the solution was adjusted to 1 by adding concentrated sulfuric acid dropwise, and refluxed at 90°C for 15 hours. After cooling, the concentrated sulfuric acid was removed with barium chloride, and the water was removed by distillation under reduced pressure. Imidazole hexanoate can be obtained;

[0037]...

Embodiment 3

[0039] (1) First, dissolve imidazole, potassium hydroxide, potassium carbonate and tetrabutylammonium bromide in a round-bottomed flask filled with dichloromethane, and stir at room temperature for 2 hours. Then, ethyl acetate was slowly added dropwise into the dichloromethane system, and refluxed at 25°C for 10h. After filtering and washing with saturated saline for several times to obtain a neutral solution, and drying with anhydrous sodium sulfate, the organic phase was distilled off under reduced pressure at room temperature to obtain an oily substance which is ethyl acetate imidazole. Then, ethyl acetate imidazole was dissolved in distilled water, and the pH value of the solution was adjusted to 1 by adding concentrated sulfuric acid dropwise, and refluxed at 60°C for 10 hours. After cooling, the concentrated sulfuric acid was removed with barium chloride, and the moisture was removed by distillation under reduced pressure, that is Can get imidazole acetate;

[0040] (2)...

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Abstract

The invention relates to the field of lubricating oil additives, in particular to ammonium salt carboxyl imidazole proton type ionic liquid as well as a preparation method and application thereof. The ionic liquid is an ammonium salt carboxyl imidazole proton type ionic liquid, and the structural formula is shown in a formula (1) in the description. The preparation method of the ammonium salt carboxyl imidazole proton type ionic liquid is simple, and the ammonium salt carboxyl imidazole proton type ionic liquid does not contain halogen, sulfur, phosphorus and other elements and does not cause pollution to the environment; and as an additive, the ammonium salt carboxyl imidazole proton type ionic liquid has excellent friction reduction and wear resistance in composite lithium-based lubricating grease.

Description

technical field [0001] The invention relates to the field of lubricating oil additives, in particular to a carboxyimidazole-based proton-type ionic liquid and a preparation method and application thereof. Background technique [0002] Friction and wear are important reasons for the failure of high-end equipment such as aerospace, large ships, and heavy machinery, as well as daily mechanical parts such as transportation, industrial and agricultural production. Poor lubrication will lead to a large amount of mechanical energy loss. According to incomplete statistics, about 1 / 3 of the world's energy consumption is due to friction, and about 80% of mechanical parts fail due to wear and tear. Grease is an important way to reduce friction and wear. Choosing the right grease can effectively reduce the friction and wear of mechanical parts and ensure the effective operation of equipment. Additives are key components of grease and can significantly improve key properties of grease. ...

Claims

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Application Information

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IPC IPC(8): C07D233/06C07C211/07C07C209/00C10M133/06C10M133/46C10N30/00C10N30/06C10N50/10
CPCC07D233/06C07C211/07C10M133/06C10M133/46C10M2215/224C10M2215/04C10N2030/64C10N2030/06C10N2050/10Y02P20/54
Inventor 张松伟胡丽天方洪岭曲关瑷李毅丁奇
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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