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Mixed-substrate magnesium salt detergent of lubricating oil and preparation method of detergent

A technology of mixing matrix and lubricating oil, applied in the direction of lubricating composition, additive, petroleum industry, etc., to achieve the effect of good colloidal stability

Inactive Publication Date: 2017-09-01
XI'AN PETROLEUM UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In order to solve various problems that may occur when the existing lubricating oil detergents containing different bases are used in combination, the purpose of the present invention is to provide a nanoscale, high alkali value, mixed base lubricant with better comprehensive performance Oil magnesium salt detergent and preparation method of the detergent

Method used

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  • Mixed-substrate magnesium salt detergent of lubricating oil and preparation method of detergent
  • Mixed-substrate magnesium salt detergent of lubricating oil and preparation method of detergent

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Activated magnesium oxide: produced by Shanghai Dunhuang Chemical Factory, with an activity of 60.

[0032] Ammonium petroleum sulfonate: produced by Yumen Petroleum Refinery and Chemical General Plant, the weight content of active ingredients is 48%, and the average relative molecular weight is 487.

[0033] Alkyl salicylic acid: produced by Additive Factory of Lanzhou Petrochemical Company, the weight content of active ingredients is 45%, and the average relative molecular mass is 354.

[0034] Using active magnesium oxide, ammonium petroleum sulfonate and alkyl salicylic acid as raw materials, the method for preparing a magnesium salt detergent for mixed matrix lubricating oil specifically comprises the following steps:

[0035] Step1: Add 80g ammonium petroleum sulfonate, 20g alkyl salicylic acid and 240ml diluent xylene to a three-necked flask equipped with a stirrer, reflux condenser, water separator and thermometer, stir and raise the temperature to 40°C .

[0...

Embodiment 2

[0041] Activated magnesium oxide: produced by Shanghai Dunhuang Chemical Factory, with an activity of 60.

[0042] Ammonium petroleum sulfonate: produced by Yumen Petroleum Refinery and Chemical General Plant, the weight content of active ingredients is 48%, and the average relative molecular weight is 487.

[0043] Alkyl salicylic acid: produced by Additive Factory of Lanzhou Petrochemical Company, the weight content of active ingredients is 45%, and the average relative molecular mass is 354.

[0044] Using active magnesium oxide, ammonium petroleum sulfonate and alkyl salicylic acid as raw materials, the method for preparing a magnesium salt detergent for mixed matrix lubricating oil specifically comprises the following steps:

[0045] Step1: Add 90g ammonium petroleum sulfonate, 10g alkyl salicylic acid and 240ml diluent xylene to a three-neck flask equipped with a stirrer, reflux condenser, water separator and thermometer, stir and raise the temperature to 40°C .

[004...

Embodiment 3

[0051] Activated magnesium oxide: produced by Shanghai Dunhuang Chemical Factory, with an activity of 60.

[0052] Ammonium petroleum sulfonate: produced by Yumen Petroleum Refinery and Chemical General Plant, the weight content of active ingredients is 48%, and the average relative molecular weight is 487.

[0053] Naphthenic acid: produced by Dushanzi Petrochemical General Plant, the weight content of active ingredients is 48%, and the average relative molecular weight is 342.

[0054] Using activated magnesium oxide, ammonium petroleum sulfonate and naphthenic acid as raw materials, the method for preparing a magnesium salt detergent for mixed matrix lubricating oil specifically comprises the following steps:

[0055] Step1: Add 80g petroleum ammonium sulfonate, 20g naphthenic acid and 240ml dilution solvent in the there-necked flask with stirrer, reflux condenser, water separator and thermometer, what this dilution solvent selects is that the distillation range is 80- Str...

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Abstract

The invention discloses a mixed-substrate magnesium salt detergent of lubricating oil and a preparation method of the detergent. The preparation method takes active magnesium oxide and at least two different types of organic acids as raw materials, wherein the organic acids include mahogany acid or petroleum ammonium sulfonate, synthesized sulfonic acid, alkyl salicylic acid and naphthenic acid. The detergent and the method have the benefits that: (1) a super-high base number mixed-substrate magnesium salt detergent product of the lubricating oil, with a base number of greater than 380 mgKOH / g can be prepared; and some performance in high temperature detergency, dispersity, thermostability and the like of the detergent product can be improved specifically by changing proportions of different types of substrates; (2) a series of detergent products with the different base numbers can be prepared by changing proportions of other materials to meet different requirements; the maximum base number can reach above 420 mgKOH / g; and (3) a particle size of a colloid particle of the product is less than 80nm, so that the product has good colloid stability.

Description

technical field [0001] The invention relates to a lubricating oil detergent and a preparation method thereof, in particular to a mixed matrix lubricating oil magnesium salt detergent and a preparation method thereof, belonging to the technical field of lubricating oil additives. Background technique [0002] Metal detergent is a main additive of modern lubricating oil, especially in internal combustion engine oil, its additive amount accounts for 20-40% of the total additive amount, and has an irreplaceable effect. [0003] At present, the detergents commonly used in lubricating oil formulations are mainly calcium salt and magnesium salt detergents. Compared with calcium salt detergents, magnesium salt detergents have the characteristics of high alkali value, low ash content, and strong acid neutralization ability. Therefore, the amount of magnesium salt detergent in lubricating oil is also increasing. [0004] Detergent is a stable colloidal dispersion system formed by sur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M141/08C10M177/00C10N30/04C10N30/08
CPCC10M141/08C10M177/00C10M2207/16C10M2207/262C10M2219/046C10N2030/08C10N2030/04C10N2010/04
Inventor 梁生荣张君涛申志兵钟汉斌
Owner XI'AN PETROLEUM UNIVERSITY
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