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Composite calcium sulfonate-based octaurea lubricating grease, and preparation method thereof

A technology of composite calcium sulfonate-based octapolyurea lubricating grease and lubricating 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 , Excellent adhesion, good extreme pressure and anti-wear effects

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

Examples

Experimental program
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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 (0.69kg); ethylenediamine (0.23kg); MDI (1.28kg); 500SN (33kg); -Diisooctyldiphenylamine (0.2kg)

[0047] Add 30kg of ultra-high alkalinity calcium sulfonate with a total alkalinity of 400mgKOH / g and 15kg of HVI150BS with a kinematic viscosity of 31mm2 / s at 100°C into a 110L atmospheric pressure reactor with heating, stirring, circulation, and cooling Lubricate the base oil, stir, heat up to 80°C, and keep the temperature constant for 10 minutes; add 2.8kg of isopropanol dodecylbenzenesulfonic acid, control the temperature at about 80°C, and stir for 10 minutes; add 0.56kg of acetic acid and acetic acid weight 4 1 times the aqueous solution, stirred for 10 minutes; heated to 85 ° C, kept at a constant temperature f...

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 (0.69kg); ethylenediamine (0.23kg); MDI (1.28kg); 500SN (33kg); - Diisooctyldiphenylamine (0.2 kg).

[0053] Prepare ultra-high base value composite calcium sulfonate-based octapolyurea grease by the method of example 1, the difference is that the total base number of the ultra-high base value calcium sulfonate used is 420mgKOH / g, and the performance data of the grease finished product obtained See Table 1.

Embodiment 3

[0055] Raw material components: ultra-high base value calcium sulfonate (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 (0.52kg); ethylenediamine (0.26kg); MDI (1.42kg); 500SN (33kg); - Diisooctyldiphenylamine (0.2 kg).

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

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Abstract

The present invention provides a composite calcium sulfonate-based octaurea lubricating grease, and a preparation method thereof. According to the lubricating grease, the lubricating grease comprises the following components by adopting the weight of the lubricating grease as the reference, wherein the components comprise, by weight, 1) 10-70% of non-Newtonian calcium sulfonate, 2) 1-10% of higher fatty acid calcium, 3) 1-15% of small-molecule inorganic calcium or organic calcium, 4) 0.5-30% of octaurea, and 5) 10-80% of lubricating base oil. According to the present invention, the lubricating grease adopts the calcium petroleum sulfonate or the synthetic calcium sulfonate as the raw material, and contains the composite calcium thickener and the octaurea compound; the lubricating grease has properties of excellent extreme pressure antiwear property, ultralong lubricating life, excellent adhesion, water resistance, colloidal stability, high drop point, thermal stability, corrosion resistance, salt mist resistance and the like.

Description

technical field [0001] The invention relates to a lubricant, specifically a composite calcium sulfonate-based octapolyurea 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, ca...

Claims

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Application Information

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IPC IPC(8): C10M169/06C10M123/04C10M177/00C10N50/10C10N30/06C10N30/12
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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