High base number composite calcium sulfonate lubricating grease and its preparation method

A compound calcium sulfonate grease, the technology of compound calcium sulfonate, applied in the directions of lubricating composition, petroleum industry, additives, etc., can solve the problem of the preparation method of compound calcium sulfonate grease with high base value without explaining the compound effect of organic urea compound, Problems such as high base number complex calcium sulfonate grease are not explained, and the effect of long lubricating life, stable product quality and excellent extreme pressure is achieved

Inactive Publication Date: 2003-04-30
SINOPEC LUBRICANTS TIANJIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of them explained the product of organic urea compound contained in the high-basic value complex calcium sulfonate grease, let alone the composite effect of the orga...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Put 23kg of high alkali value synthetic calcium sulfonate with a total base value of 322mgKOH / g, 13kg of HVI150BS lubricating base oil with a kinematic viscosity of 32.1 at 100°C in a normal-pressure reactor with a volume of 110L and heating, cooling and stirring. 6kg of water, stir, heat up, and keep the temperature at 83°C for 30 minutes; add 0.6kg of acetic acid (pre-diluted with 3 times of water) and 0.75kg of 12 hydroxystearic acid, stir, heat up to 86°C, and then at 86-90 Constant temperature within the temperature range of ℃ for 1.5 hours, the material becomes thick; add 0.4kg calcium hydroxide (diluted into a suspension with 3kg times of water), and stir for 10 minutes; add 0.5kg of boric acid (dilute with 4 times of water, and heat to 95℃, Make it into a hot water solution), heat up to 100°C, and keep the temperature constant for 45 minutes in the temperature range of 95-100°C; heat again to 115°C, and keep the temperature in the temperature range of 115-120°C f...

Embodiment 2

[0020] Embodiment 2 (comparative example)

[0021] In a volume of 110L, with heating, cooling and stirring normal pressure reactor, drop into 23kg of high alkali value synthetic calcium sulfonate with a total base value of 322mgKOH / g, and 13kg of HVI150BS lubricating base oil with a kinematic viscosity of 32.1 at 100°C. 6kg of water, stir, heat up, keep the temperature at 83°C for 30 minutes; add 0.8kg of acetic acid (diluted with three times water in advance) and 0.75kg of 12 hydroxystearic acid, heat up to 88°C, in the temperature range of 86-90°C Keep the temperature inside for 1.5 hours, and the material becomes thicker; add 0.4 calcium hydroxide (diluted with 3 times of water to form a suspension), and stir for 10 minutes; aqueous solution), heated to 100°C, and kept at a constant temperature for 45 minutes in the temperature range of 95-100°C; heated again to 115°C, and kept at a constant temperature for 20 minutes in the temperature range of 115-12...

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PUM

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Abstract

A composite lubricating grease contains high-basicity petroleum calcium sulfonate or synthetic calcium sulfonate, acetic acid, C12-C22 hydroxy fatty acid, boric acid, arylamine-type antioxidizing agent and basic lubricating oil. Its advantages are excellent extreme-pressure resistance to friction, water, salt fog and corrosion, high drop point and thermal stability, good viscosity and long service life.

Description

technical field [0001] The invention relates to a compound calcium sulfonate lubricating grease and a preparation method thereof, in particular to a high-performance high-basic value compound calcium sulfonate lubricating grease containing an organic urea compound. Background technique [0002] Calcium sulfonate with high base value is used as a detergent and has acid neutralization ability, and is widely used as an additive for internal combustion engine lubricating oil. Calcium sulfonate with high base value can be divided into petroleum calcium sulfonate and synthetic calcium sulfonate according to different production methods. Petroleum calcium sulfonate is a by-product petroleum produced when oleum or sulfur trioxide is used to sulfonate mineral lubricating oil. Sulfonic acid is produced by reacting with calcium hydroxide, carbonation and other high alkalinization techniques; synthetic calcium sulfonate is synthesized by sulfonation of fuming sulfuric acid or sulfur tri...

Claims

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Application Information

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IPC IPC(8): C10M135/10
Inventor 刘庆廉融战良温贤勇
Owner SINOPEC LUBRICANTS TIANJIN
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