Calcium-sulfonate-based hexapolyurea lubricating grease and preparation method thereof

A calcium sulfonate-based hexapolyurea lubricating grease and lubricating grease technology, applied in lubricating compositions, petroleum industry, thickeners, etc., to achieve the effects of super long lubricating life, stable product quality, and simple preparation process

Active Publication Date: 2012-04-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The industrial application of compound calcium sulfonate base lubricating grease in China is still in its infancy, and there are also domestic technical documents describing the preparation method of this type of grease, wherein CN 1152949 provides a kind of high alkali value compound calcium sulfonate base containing organic urea compound In the synthesis method of lubricating grease, the organic urea used is dipolyurea. Although its lubricating life and other properties are improved compared with the existing technology, the properties such as extreme pressure and anti-wear properties are not much different from the existing technology, which still needs to be further improved.

Method used

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  • Calcium-sulfonate-based hexapolyurea lubricating grease and preparation method thereof
  • Calcium-sulfonate-based hexapolyurea lubricating grease and preparation method thereof
  • Calcium-sulfonate-based hexapolyurea lubricating grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Raw material components: ultra-high base value calcium sulfonate (total base value 400mgKOH / g, 30kg; 150BS (15kg); dodecylbenzenesulfonic acid (2.8kg); acetic acid (0.56kg); boric acid (2.32kg) ; octadecylamine (0.84kg); ethylenediamine (0.19kg); MDI (1.17kg); 500SN (33kg);

[0038] Add 30kg of super high alkali value calcium sulfonate with a total alkali value of 400mgKOH / g and 15kg of calcium sulfonate with a kinematic viscosity of 31mm at 100°C in a volume of 110L with heating, stirring, circulation and cooling. 2 / s HVI150BS lubricating base oil, stir, heat up to 60°C, keep the temperature for 10 minutes; add 2.8kg of dodecylbenzenesulfonic acid, control the temperature at about 65°C, stir for 10 minutes; add 0.56kg of acetic acid and the weight of acetic acid 4 times the aqueous solution, stir for 10 minutes; add 2.32kg of boric acid and the boric acid solution completely dissolved in 6 times of hot water, stir, keep the temperature at 80°C for 90 minutes, the mate...

Embodiment 2

[0042] Raw material components: ultra-high base value calcium sulfonate (total base value 420mgKOH / g, 30kg); 150BS (15kg); dodecylbenzenesulfonic acid (2.8kg); acetic acid (0.56kg); boric acid (2.32kg ); octadecylamine (0.84kg); ethylenediamine (0.19kg); MDI (1.17kg); 500SN (33kg);

[0043] Prepare ultra-high base value calcium sulfonate-based hexaurea grease by the method of example 1, the difference is that the total base value of the ultra-high base value calcium sulfonate used is 420mgKOH / g, and the performance data of the obtained grease finished product are shown in Table 1.

Embodiment 3

[0045] Raw material components: ultra-high base number calcium sulfonate (total base number 400mgKOH / g, 30kg) 35%; 150BS (15kg) 17.5%; dodecylbenzenesulfonic acid (2.8kg) 3.2%; acetic acid (0.56kg) 0.6%; Boric acid (2.32kg) 2.7%; Laurylamine (0.66kg) 0.77%; Ethylenediamine (0.21kg) 0.24%; MDI (1.33kg) 1.55%; Octyldiphenylamine (0.2kg) 0.2%

[0046] The ultra-high base value calcium sulfonate-based hexapolyurea grease was prepared according to the method of Example 1, except that the fatty amine used was laurylamine, and the performance data of the obtained grease finished product are shown in Table 1.

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Abstract

The invention provides a calcium-sulfonate-based hexapolyurea lubricating grease and a preparation method thereof. With the weight of the lubricating grease as a reference, the lubricating grease comprises components of, by weight: (1) 10-70% of non-Newtonian fluid calcium sulfonate; (2) 0.5-30% of hexapolyurea; and (3) 10-80% of lubrication base oil. According to the invention, Newtonian fluid calcium sulfonate is converted and is subject to a reaction with diisocyanate, diamine and monoamine, such that the calcium-sulfonate-based hexapolyurea lubricating grease is obtained, the lubricating grease provided by the invention has excellent extreme pressure anti-wear capacity, ultra-long lubricating life, good adhesion, good water resistance, good colloid stability, high dropping point, good heat stability, good corrosion resistance, good salt spray resistance, and the like.

Description

technical field [0001] The invention relates to a lubricant, specifically a calcium sulfonate-based hexaurea grease and a preparation method thereof. Background technique [0002] Calcium sulfonate has been used as a detergent and antirust agent for lubricating oil for decades, and is widely used as an additive for internal combustion engine lubricating oil. Its technical development is mainly to make it highly alkaline, that is, to use calcium carbonate with a Active calcium alkylbenzene sulfonate or calcium alkyl carboxylate is dispersed in diluent oil to form a colloidal dispersion system. High base value calcium sulfonate can be divided into petroleum calcium sulfonate and synthetic calcium sulfonate according to different production methods. Calcium petroleum sulfonate is made with oleum or SO 3 Petroleum sulfonic acid, a by-product of the production of white oil from sulfonated mineral lubricating oil, is combined with Ca(OH) 2 Reaction, carbonation and other high a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10M123/02C10M123/04C10M177/00C10N30/06C10N30/12C10N50/10
Inventor 何懿峰孙洪伟刘磊段庆华刘中其姜靓
Owner CHINA PETROLEUM & CHEM CORP
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