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Composite calcium-sulfonate-based tetrapolyurea lubricating grease and preparation method thereof

A technology of composite calcium sulfonate-based tetrapolyurea grease and grease, which is applied in lubricating compositions, petroleum industry, thickeners, etc., can solve the problems of little difference in extreme pressure and anti-wear properties, and achieve stable product quality , good extreme pressure and anti-wear properties, simple preparation process

Active Publication Date: 2012-05-16
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 domestic technical documents also describe the preparation method of this type of lubricating 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 performance such as extreme pressure and anti-wear performance is not much different from the existing technology, which still needs to be further improved.

Method used

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  • Composite calcium-sulfonate-based tetrapolyurea lubricating grease and preparation method thereof
  • Composite calcium-sulfonate-based tetrapolyurea lubricating grease and preparation method thereof
  • Composite calcium-sulfonate-based tetrapolyurea lubricating grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Raw material components: super high base value calcium sulfonate (total base value 400mgKOH / g, 30kg); 150BS (15kg); dodecylbenzenesulfonic acid (2.8kg); acetic acid (0.56kg); Ca(OH) 2 (1.8kg); 12-hydroxystearic acid (2kg); boric acid (2.32kg); octadecylamine (1.08kg); ethylenediamine (0.12kg); MDI (1kg); 500SN (33kg); Diisooctyldiphenylamine (0.2 kg).

[0047] 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 80°C, keep the temperature for 10 minutes; add 2.8kg of dodecylbenzenesulfonic acid, control the temperature at about 80°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; raise the temperature to 85 ° C, keep the temperature for 90 minutes, the mate...

Embodiment 2

[0052] 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); Ca(OH) 2 (1.8kg); 12-hydroxystearic acid (2kg); boric acid (2.32kg); octadecylamine (1.08kg); ethylenediamine (0.12kg); MDI (1kg); 500SN (33kg); Diisooctyldiphenylamine (0.2 kg).

[0053] Prepare ultra-high base value calcium sulfonate-based tetrapolyurea 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, the performance data of the grease finished product obtained See Table 1.

Embodiment 3

[0055] Raw material components: super high base value calcium sulfonate (total base value 400mgKOH / g, 30kg); 150BS (15kg); dodecylbenzenesulfonic acid (2.8kg); acetic acid (0.56kg); Ca(OH) 2 (1.8kg); 12-hydroxystearic acid (2kg); boric acid (2.32kg); dodecylamine (0.88kg); ethylenediamine (0.14kg); MDI (1.18kg); 500SN (33kg); - Diisooctyldiphenylamine (0.2 kg).

[0056] The ultra-high base number composite calcium sulfonate-based tetrapolyurea grease was prepared according to the method of Example 1, except that the fatty amine used was dodecylamine, and the performance data of the obtained grease finished product are shown in Table 1.

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Abstract

The invention discloses a composite calcium-sulfonate-based tetrapolyurea lubricating grease and a preparation method thereof. With the weight of the lubricating grease as a reference, the lubricating grease comprises components of: (1) 10-70% of non-Newtonian fluid calcium sulfonate; (2) 1-10% of higher fatty acid calcium; (3) 1-15% of small-molecule inorganic acid calcium or organic acid calcium; (4) 0.5-30% of tetrapolyurea; and (5) 10-80% of lubricating base oil. According to the lubricating grease, calcium petroleum sulfonate or synthesized calcium sulfonate is adopted as a raw material, and the lubricating oil contains a composite calcium thickening agent and a tetrapolyurea compound. The lubricating grease has excellent extreme pressure wear resistance, ultra-long lubricating life, good adhesion, water resistance, colloid stability, high dropping point, thermal stability, corrosion resistance, and salt spray resistance.

Description

technical field [0001] The invention relates to a lubricant, specifically a composite calcium sulfonate-based tetrapolyurea lubricating 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, c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10M123/02C10M177/00C10N30/06C10N50/10C10N30/12
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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