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A kind of organic molybdenum lubricating grease additive and preparation method thereof

A technology of lubricating grease and additives, applied in the directions of additives, organic chemistry, lubricating compositions, etc., can solve the problems of inferior tribological performance, low activity, non-conformity, etc., and achieve the effect of excellent tribological characteristics and excellent anti-friction performance.

Active Publication Date: 2019-03-01
张卫东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Molybdenum dialkyldithiophosphate and molybdenum dialkyldithiocarbamate contain elements such as phosphorus, sulfur and nitrogen, which may cause sintering of components or produce acids such as compound hydrolysis during use, which will cause cylinder and seal Corrosion of the original parts affects the use, and its use has begun to be reduced; the trinuclear molybdenum-sulfur compound has not been widely used due to the difficulty in preparation and high cost; most of the organic molybdenum that does not contain sulfur and phosphorus is molybdenum complexes, and there is no pollution Also does not poison catalysts, but exhibits less tribological properties than sulfur-containing organomolybdenum compounds and generally has lower molybdenum content
For example, the content of molybdenum in the organic molybdenum lubricating oil additive disclosed in Chinese patent (CN101029265A) is 0.1-8.0%. Although it is a phosphorus-free and sulfur-free additive, its reaction system is complicated. The organic molybdenum lubricating oil additive must contain amine groups in order to react to obtain the organic molybdenum lubricating oil additive, resulting in the final product containing nitrogen, which does not meet the current environmental protection requirements, and the selected inorganic molybdenum source reacts with organic matter. The activity is small, and the product The rate is low, therefore, the molybdenum content in the final product is low

Method used

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  • A kind of organic molybdenum lubricating grease additive and preparation method thereof
  • A kind of organic molybdenum lubricating grease additive and preparation method thereof
  • A kind of organic molybdenum lubricating grease additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Weigh 56.4g of oleic acid and add it to a 250ml three-neck flask, heat at 30°C for 5min, then add 15mL of triethylamine, stir well, add 25g of molybdenum dioxide dichloride in 5 times, stir and react at 30°C under nitrogen atmosphere After 1 hour, a dark blue oily liquid was obtained. Add 30ml of deionized water to the above system to wash three times, and separate to obtain the upper organic phase, which was dissolved in dichloromethane, filtered to remove solid particles, and then decompressed and rotated by a rotary evaporator to remove dichloromethane. Methane, dried in vacuo to obtain dark blue target compound M-1.

[0051] Wherein, the molybdenum content is 21.15% of the total weight of the organic molybdenum lubricating grease additive.

[0052] The structural formula of oleic acid is: ;

[0053] The reaction equation of above-mentioned reaction is:

[0054] ;

[0055] The structural formula of target compound M-1 is:

[0056] .

Embodiment 2

[0058] Weigh 29g of n-dodecylbenzoic acid and add it into a 250ml three-neck flask, mix it with 50ml of ethyl acetate, heat at 60°C for 5min, then add 15mL of triethylamine, stir well to dissolve it, add 25g of diethylamine in 5 times Chlorine molybdenum dioxide, stirred and reacted at 60°C for 1 hour under a nitrogen atmosphere to obtain a dark blue oily liquid, removed ethyl acetate by rotary evaporation under reduced pressure, added 30ml deionized water to the above system to wash three times, separated, and obtained the upper organic phase solution In dichloromethane, the solid particles were removed by filtration, and then the dichloromethane was removed by rotary evaporator under reduced pressure, and the dark blue target compound M-2 was obtained by vacuum drying.

[0059] Wherein, the molybdenum content is 11.75% of the total weight of the organic molybdenum lubricating grease additive.

[0060] The structural formula of n-dodecylbenzoic acid is: ;

[0061] The reac...

Embodiment 3

[0066] Weigh 40g of lauric acid and add it to a 250ml three-neck flask, heat at 30°C for 5min, then add 15mL of triethylamine, stir well, add 25g of molybdenum dichloride in 5 times, stir and react at 30°C under nitrogen atmosphere for 1 hour, to obtain a dark blue oily liquid, add 30ml deionized water to the above system and wash three times, separate, obtain the upper organic phase and dissolve it in dichloromethane, filter to remove solid particles, and then remove dichloromethane by rotary evaporation under reduced pressure , dried in vacuo to obtain dark blue target compound M-3.

[0067] Wherein, the molybdenum content is 18.15% of the total weight of the organic molybdenum lubricating grease additive.

[0068] The structural formula of lauric acid is: ;

[0069] The reaction equation of above-mentioned reaction is:

[0070] ;

[0071] The structural formula of target compound M-3 is: .

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Abstract

The invention provides an organic molybdenum lubricating grease additive. The organic molybdenum lubricating grease additive is prepared by reacting an organic compound containing hydroxyl, an inorganic molybdenum source and triethylamine, wherein the organic compound containing the hydroxyl is carboxylic acid, alcohol or phenol; the inorganic molybdenum source is MoO2Cl2. The invention further provides a preparation method of the organic molybdenum lubricating grease additive. The prepared organic molybdenum lubricating grease additive is free from phosphorus, sulfur, nitrogen and halogen, so that the defects of corrosion and sintering among friction components can be overcome; even if a part of additive burns in a using process, the generation of sulfides and nitrides can be avoided; the organic molybdenum lubricating grease additive is environment-friendly; moreover, molybdenum content of a prepared target additive is more than 10 percent, and the prepared target additive has superior anti-friction and friction-reducing properties, and has a superior friction feature when being applied to lubricating grease.

Description

technical field [0001] The invention belongs to the field of lubricating oil additives, in particular to an organic molybdenum lubricating grease additive and a preparation method thereof. Background technique [0002] With the continuous increase of environmental protection and the improvement of energy-saving awareness, the content of phosphorus, sulfur, nitrogen and other elements in automotive oil products is strictly limited. For lubricating grease, there are not only restrictions on the content of phosphorus, sulfur, nitrogen and other elements in the oil, but also higher requirements on friction performance. Therefore, the demand for high-quality lubricating oil is imminent, and the core problem of improving the quality of lubricating oil products is to solve the anti-wear and anti-friction properties of additives. [0003] For a long time, it has been believed that the addition of phosphorus, sulfur, halogen and other elements to lubricating oil will improve the ant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F11/00C08G65/328C10M139/00C10M155/00C10N30/06
CPCC07F11/005C08G65/328C10M139/00C10M155/00C10M2227/066C10M2229/00C10N2030/06
Inventor 张卫东乔亚丽杨杰
Owner 张卫东