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Preparation of high-performance composite grease sulphonate lubricating grease

A compound calcium sulfonate lubricating grease and the technology of compound calcium sulfonate are applied in lubricating compositions, petroleum industry, base materials, etc., which can solve the problems of low thickening ability, achieve strong oxidation resistance, good mechanical stability, The effect of good extreme pressure and antiwear properties

Inactive Publication Date: 2008-08-06
益田润石(北京)化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Calcium sulfonate is generally used as a detergent and antirust agent for lubricating oil. Until the 1950s, calcium sulfonate was used as a thickener to prepare grease abroad, but due to its low thickening ability, it occupies a large amount in grease. The main thickener is still mixed soap

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The preparation of the high-performance composite calcium sulfonate lubricating grease of the present invention.

[0038] Add a certain amount of petroleum calcium sulfonate or synthetic calcium sulfonate with high alkali value into the mixture of base oil and water, stir and heat up to 75-90°C, and keep the temperature constant. Add water-diluted acetic acid and fatty acid, stir and heat up, and keep the temperature constant at 90-100°C. When the system thickens, add calcium hydroxide and boric acid to undergo saponification. Continue to heat up to 120-140°C, add C 6 -C 22 amine diisocyanate, stirring, constant temperature. Continue to heat up to 180-200°C for high-temperature compound refining. Cool down to 110°C and add antioxidant, extreme pressure agent and oily agent. Then it is filtered, degassed and purified by circulation, and the finished product is packaged.

[0039] Wherein, the percentage of each component is:

[0040] Base oil: 65

[0041] Composit...

Embodiment 2

[0050] The preparation of the high-performance composite calcium sulfonate lubricating grease of the present invention.

[0051] Add a certain amount of petroleum calcium sulfonate or synthetic calcium sulfonate with high alkali value into the mixture of base oil and water, stir and heat up to 75-90°C, and keep the temperature constant. Add water-diluted acetic acid and fatty acid, stir and heat up, and keep the temperature constant at 90-100°C. When the system thickens, add calcium hydroxide and boric acid to undergo saponification. Continue to heat up to 120-140°C, add C 6 -C 22 amine diisocyanate, stirring, constant temperature. Continue to heat up to 180-200°C for high-temperature compound refining. Cool down to 110°C and add antioxidant, extreme pressure agent and oily agent. Then it is filtered, degassed and purified by circulation, and the finished product is packaged.

[0052] Wherein, the percentage of each component is:

[0053] Base oil: 70

[0054] Composit...

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PUM

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Abstract

The invention discloses a process for preparing complex calcium sulfonate grease with excellent performance, which comprises the following components and mass fractions which are that base oil 40-75, complex calcium sulfonate 10-20, 12 hydroxy stearine, acid 5-15, acetic acid 1-4, boric acid 1.5-6, calcium hydroxide 4-8, anti-oxidant 0.3-1.5, extreme pressure agent 1-5 and oiliness additive 1-4. The complex calcium sulfonate grease of the invention has the advantages of excellent mechanical stability and excellent thermal stability, and the maximum use temperature is 260 DEG C, excellent thermal transformation performance, structure can not be changed under instant high temperature, excellent extreme pressure and antiwear behavior, PD value can reach to 4900N, strongest oxidation resistance, very excellent water-resistant performance and excellent low temperature performance, the process for preparing complex calcium sulfonate grease can be normally used below 15 DEG C. The process for preparing complex calcium sulfonate grease is widely used in the places whose work environment are rougher such as iron, steel, mine and the like.

Description

technical field [0001] The invention relates to a high-performance composite calcium sulfonate lubricating grease and a preparation method thereof, especially a high-performance product used in high-temperature, heavy-load, watery and dusty environments. Background technique [0002] Calcium sulfonate is generally used as a detergent and antirust agent for lubricating oil. Until the 1950s, calcium sulfonate was used as a thickener to prepare grease abroad, but due to its low thickening ability, it occupies a large amount in grease. The main thickener is still mixed soap. After the 1960s and 1970s, people improved calcium sulfonate and further compounded it with fatty acid and borate to prepare high-alkaline complex calcium sulfonate grease, gradually overcoming the characteristics of the original product and improving performance. The great improvement has aroused widespread concern in the international grease industry. [0003] Composite calcium sulfonate grease has excel...

Claims

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Application Information

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IPC IPC(8): C10M105/72C10M177/00C10M137/04C10M133/12C10M133/44C10N30/10
Inventor 王金波于海英杜守琴甄轶黄学东黄学智
Owner 益田润石(北京)化工有限公司
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