Composite calcium sulfonate grease lubricant and preparation method thereof

A composite calcium sulfonate and a technology for synthesizing calcium sulfonate, which are used in lubricating compositions, petroleum industry, thickeners, etc., can solve problems such as dependence and lack of large-scale production of composite calcium sulfonate, and achieve stable structure and performance, easy to use Controls, simple effects

Active Publication Date: 2010-07-28
SHANGHAI HITECRUN SPECIAL LUBRICATE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, domestic influential manufacturers have focused on compound calcium sulfonate grease as the key research object. However, due to problems such as raw materials, formulations and production method co

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] In a volume of 80L band heating and stirring normal pressure reaction kettle, drop into 15Kg of high base value synthetic calcium sulfonate with total base value of 392mgKOH / g, 15Kg of HVI150BS lubricating base oil with kinematic viscosity of 32CSt at 100°C, and 3.5Kg of water, Stir, heat up to 85-98°C temperature range and keep constant temperature for 2 hours, the material gradually becomes fat; add 10Kg of HVI150BS lubricating base oil, 0.262Kg of calcium hydroxide (diluted into a suspension with 2.6 times of water), 0.6Kg of boric acid (diluted with 3 times water), heat up to 88°C, and keep the temperature at 88-96°C for 30 minutes; heat to 98°C, add 0.42Kg12 hydroxystearic acid, and keep the temperature at 98-105°C for 45 minutes; Melting at 160-210°C at high temperature, cooling down to 110°C, circulation, homogenization, and degassing to become finished products. The test results are shown in Table 1.

[0040] The inspection data of table 1 embodiment 1

[0041...

Embodiment 2

[0044] Put 12Kg of high alkali value synthetic calcium sulfonate with a total base value of 403mgKOH / g, 14Kg of 500SN lubricating base oil with a kinematic viscosity of 9.5CSt at 100°C, and 3.2Kg of water in an 80L atmospheric pressure reactor with heating and stirring. , stirring and heating to a constant temperature of 88-100°C for 2.2 hours, and the material gradually becomes fat; add 12Kg of 500SN lubricating base oil, 0.24Kg of calcium hydroxide (diluted into a suspension with 2.6 times of water), and 0.5Kg of Boric acid (diluted with 3 times of water), heated up to 88°C, kept at 88-96°C for 30 minutes; heated to 98°C, added 0.8Kg12 hydroxystearic acid, kept at 98-105°C for 45 minutes; Melt at 160-210°C at high temperature, lower the temperature, stir when the temperature drops to 120°C, continue to cool down to 110°C, circulate, homogenize, and degas to become a finished product. The test results are shown in Table 2.

[0045] The inspection data of table 2 embodiment 2...

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PUM

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Abstract

The invention discloses a composite calcium sulfonate grease lubricant and a preparation method thereof. The grease lubricant has the following ingredients by proportion: A) base oil which accounts for 40-80% of the gross weight of the grease lubricant, with kinematic viscosity of 40-1600mm2/s at temperature of 40 DEG C; B) high base number synthesized calcium sulfonate which accounts for 10-50% of the gross weight of the grease lubricant, with total alkali value of 380-420mgKOH/g; and C) a composite densifier comprising C12-C22 hydroxy fatty acid, boric acid, phosphoric acid and calcium hydroxide, accounting for 0.5-5%, 0.5-3%, 0.5-3% and 0.5-2% of the gross weight of the grease lubricant respectively. The preparation method comprises the following steps: mixing, stirring, heating, heating up, homogenizing, degassing, etc. In the invention, no transforming agents are used, amorphous calcium carbonate can be thoroughly converted into calcite crystal form calcium carbonate merely by adding water, and phosphoric acid and boric acid are used in the composite technology formula to improve the technology of composite calcium sulfonate grease lubricant. The method has the advantages of simple method and easy control and the product has stable performances.

Description

technical field [0001] The invention relates to a high alkali value composite calcium sulfonate grease and a preparation method thereof, in particular to a composite calcium sulfonate grease with simple method and excellent performance and a preparation method thereof. Background technique [0002] Composite calcium sulfonate-based grease is a kind of high-temperature multi-effect grease. Without any additives, this grease has excellent extreme pressure and anti-wear properties, corrosion resistance and rust resistance. At the same time, it has high and low temperature performance, mechanical stability, Colloidal stability, oxidation stability, and water resistance are excellent. Since the mid-1980s, it has been the technical focus of research at home and abroad. Such as US4560489, US4597880, US4824584, US5126062, US5308514, US5338467 represented by Ron Muir et al. Although the development of domestic compound calcium sulfonate grease is relatively late, recently there hav...

Claims

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Application Information

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IPC IPC(8): C10M169/06C10M117/04C10M113/08C10N30/12C10N30/06C10N50/10
Inventor 张连惠孙宗飞
Owner SHANGHAI HITECRUN SPECIAL LUBRICATE SCI & TECH
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