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Preparation method for oil-soluble organic molybdenum-sulfur lubricating oil additive

A lubricating oil additive and organic molybdenum technology, which is applied in the field of oil additive preparation, can solve the problems of low molybdenum recovery rate, difficult oil filtration, cumbersome washing steps, etc., and achieve the effect of improving oil solubility and good room temperature stability

Active Publication Date: 2012-10-03
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods also have problems such as low molybdenum recovery rate, cumbersome washing steps, and difficult filtration of oily matter to varying degrees.

Method used

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  • Preparation method for oil-soluble organic molybdenum-sulfur lubricating oil additive
  • Preparation method for oil-soluble organic molybdenum-sulfur lubricating oil additive

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Experimental program
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Embodiment 1

[0038] The preparation method of the oil-soluble organic molybdenum sulfur lubricating oil additive of the present embodiment comprises the following steps:

[0039] Step 1. Mix the hexavalent molybdenum compound, alcohol, deionized water and trialkylamine in a molar ratio of 1:3:7:2 at a temperature of 60°C until the hexavalent molybdenum compound is completely dissolved, and then add the mineral oil and dialkylamine, add 250g of mineral oil and 1.0mol of dialkylamine per mole of hexavalent molybdenum compound, and stir to obtain a mixed solution after 30min; the hexavalent molybdenum compound is preferably molybdenum trioxide; the dioxane base amine is C 16 ~C 26 The aliphatic diamine, preferably diisotridecylamine; The alcohol is preferably n-butanol; The trialkylamine is C 6 ~C 9 The trialkylamine, preferably triethylamine; The mineral oil is preferably naphthenic oil;

[0040] Step 2. Vacuumize the mixture described in step 1 to remove the air, and then pass in nitrog...

Embodiment 2

[0047] The preparation method of the oil-soluble organic molybdenum sulfur lubricating oil additive of the present embodiment comprises the following steps:

[0048] Step 1. Mix the hexavalent molybdenum compound, alcohol, deionized water and trialkylamine in a molar ratio of 1:3:5:2 at a temperature of 70°C until the hexavalent molybdenum compound is completely dissolved, and then add the mineral oil and dialkylamine, add 500g of mineral oil and 2.0mol of dialkylamine per mole of hexavalent molybdenum compound, and stir for 1min to obtain a mixed solution; the hexavalent molybdenum compound is preferably sodium molybdate; the trioxane base amine is C 6 ~C 9 The trialkylamine, preferably tripropylamine; The dialkylamine is C 16 ~C 26 The aliphatic diamine, preferably diisodecylamine; The mineral oil is preferably naphthenic oil; The alcohol is preferably n-pentanol;

[0049] Step 2. Vacuumize the mixture described in step 1 to remove the air, and then pass in nitrogen gas....

Embodiment 3

[0056] The preparation method of the oil-soluble organic molybdenum sulfur lubricating oil additive of the present embodiment comprises the following steps:

[0057] Step 1. Mix the hexavalent molybdenum compound, alcohol, deionized water and trialkylamine in a molar ratio of 1:3:20:2 at a temperature of 60-90°C until the hexavalent molybdenum compound is completely dissolved, and then Add vegetable oil and dialkylamine, add 500g of vegetable oil and 2.2mol of dialkylamine per mole of hexavalent molybdenum compound, and stir for 1min to obtain a mixed solution; the hexavalent molybdenum compound is preferably sodium molybdate; the trioxane base amine is C 6 ~C 9 The trialkylamine, preferably tripropylamine; The dialkylamine is C 16 ~C 26 The aliphatic diamine, preferably diisooctylamine; The vegetable oil is preferably corn oil; The alcohol is preferably n-butanol;

[0058] Step 2. Vacuumize the mixture described in step 1 to remove the air, and then pass in nitrogen gas. ...

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Abstract

The invention provides a preparation method for an oil-soluble organic molybdenum-sulfur lubricating oil additive. The preparation method comprises the following steps: firstly, mixing and stirring a hexavalent molybdenum compound, alcohol, deionized water, alkylamine and lubricating oil basic oil to obtain a mixed solution; secondly, vacuumizing the mixed solution to remove air, dropping CS2 in the atmosphere of nitrogen gas to obtain an oily solution; thirdly, heating and reflowing the oily solution then carrying out reduced pressure distillation to obtain distillation residue; fourthly, carrying out heating treatment on the distillation residue to obtain an organic molybdenum-sulfur compound; and fifthly, uniformly mixing the organic molybdenum-sulfur compound with fatty acid ester surfactants according to the proportion to obtain the oil-soluble organic molybdenum-sulfur lubricating oil additive. The preparation process disclosed by the invention has the advantages of simple flow,strong repeatability and no complex steps such as washing and filtrating, and is suitable for large-scale industrial production. The oil-soluble organic molybdenum-sulfur lubricating oil additive prepared by the preparation method disclosed by the invention is favorable in oil solubility and room temperature stability and is low in molybdenum content.

Description

technical field [0001] The invention relates to a preparation method of an oil additive, in particular to a preparation method of an oil-soluble organic molybdenum-sulfur lubricating oil additive. Background technique [0002] The great idea of ​​synthesizing organic molybdenum compounds and using them in the field of lubrication comes from MoS 2 This is a solid lubricant with excellent friction properties. MoS 2 Insoluble in lubricating oil and grease, its application fields are greatly limited. Therefore, anti-friction and anti-wear additives with organic molybdenum compounds as the main component began to appear in the 1970s. The organic molybdenum compound in the additive is thermally decomposed to generate ultrafine or near nanometer MoS 2 , can adhere to the surface of the friction pair, so that the rough surface is "filled" and becomes smooth, thereby effectively reducing the friction coefficient and improving the anti-wear effect. In addition, adding organic moly...

Claims

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Application Information

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IPC IPC(8): C10M141/12C07F11/00C10N30/06C10N30/10
Inventor 蒋丽娟杜明焕李来平刘燕张新王国栋
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH