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Compound grease of calcium sulfonic acid, and preparation method

A technology of compound calcium sulfonate and lubricating grease, which is applied in lubricating compositions, petroleum industry, additives, etc., can solve the problem of high cost, achieve the effect of improving dropping point and good comprehensive performance

Active Publication Date: 2006-12-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But the basic value of the main raw material overbasic calcium sulfonate used in the above two patents is about 400mgKOH / g, even if its content is reduced, the cost is still very high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Add 400g of overbasic calcium sulfonate with a base value of 280mgKOH / g to 200g of 500SN mineral oil, heat to 80-95°C, add 38.5g of water and 5.4g of acetic acid, and wait until the material thickens, use a Fourier transform infrared spectrometer Test, there is an absorption peak of calcite-type calcium carbonate at 881-886cm-1, add 150g of 500SN mineral oil, add 18g of 12 hydroxystearic acid, stir for 5 minutes, add a mixture of 11g of boric acid and 40g of hot water, add a solution of 80g Suspension of 20g calcium hydroxide in water, kept at 90-100°C for 30 minutes, heated to 180°C, added 160g of 500SN mineral oil, stirred evenly, cooled to room temperature, and ground evenly. The lubricating grease is composed of: 42.9% by weight of overbased calcium sulfonate, 2.0% by weight of calcium 12-hydroxystearate soap, 1.8% by weight of calcium borate, and 53.2% by weight of base oil. The physical and chemical performance analysis results of the lubricating grease are shown ...

Embodiment 2

[0033] Add 500g of overbasic calcium sulfonate with a base value of 300mgKOH / g to 300g of 500SN mineral oil, heat to 80-95°C, add 40g of water and 6g of acetic acid, wait until the material becomes thick, and test it with a Fourier transform infrared spectrometer. There is an absorption peak of calcite-type calcium carbonate at 881-886cm-1, add a suspension of 28g calcium hydroxide dissolved in 80g water, add 26g 12 hydroxystearic acid, stir for 5 minutes, add a mixture of 15g boric acid and 40g hot water , kept at 90-100°C for 40 minutes, heated to 200°C, cooled to 100°C, added 160g of 150BS mineral oil, stirred evenly, and ground. The lubricating grease is composed of: 48.8% by weight of overbased calcium sulfonate, 2.7% by weight of calcium 12-hydroxystearate soap, 2.6% by weight of calcium borate, and 45.6% by weight of base oil. The physical and chemical performance analysis results of the lubricating grease are shown in Table 1.

Embodiment 3

[0035] Add 400g of overbasic calcium sulfonate with a base value of 314mgKOH / g to 200g of 150BS mineral oil, heat to 80-95°C, add 20g of water and 6g of acetic acid, wait until the material becomes thick, and test it with a Fourier transform infrared spectrometer. There is an absorption peak of calcite-type calcium carbonate at 881-886cm-1, add 200g150BS, stir evenly, add 28.4g12 hydroxystearic acid, add a mixture of 16.4g boric acid and 40g hot water, add 13.9g hydroxide dissolved in 30g water Calcium suspension, stirred for 5 minutes, kept at 90-100°C for 40 minutes, heated to 200°C, cooled, and ground. The lubricating grease is composed of: 46.6% by weight of overbased calcium sulfonate, 3.5% by weight of calcium 12-hydroxystearate soap, 3.0% by weight of calcium borate, and 46.6% by weight of base oil. The physical and chemical performance analysis results of the lubricating grease are shown in Table 1.

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PUM

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Abstract

This invention relates to composite lubricating grease, which comprises: calcium sulfonate with a base number of 250-320 mgKOH / g 30-60 wt. %, calcium borate 0.8-5.1 wt. %, C12-C24 fatty acid calcium soap 1.0-6.8 wt. %, and lubricating base oil. The composite lubricating grease has such advantages as low cost, good synthetical properties, high dropping point, high colloid stability and good water proof property.

Description

technical field [0001] The invention relates to a lubricant, in particular to a composite calcium sulfonate lubricating grease and a preparation method thereof. Background technique [0002] Calcium sulfonate is often used as a detergent and antirust agent for lubricating oil. Since the 1950s, some people abroad have used calcium sulfonate as a thickener to make calcium-based grease. The fat drop point obtained is high, but the oil-soluble Newtonian calcium sulfonate is used at this time, and the thickening ability is very small, so they are generally used together with traditional fatty acid soap thickeners in a small proportion. In the 1960s and 1970s, people found a way to transform Newtonian calcium sulfonate into a non-Newtonian body with thixotropic properties, and introduced the high alkalinization technology of calcium sulfonate in the preparation process of calcium sulfonate-based grease. Made overbased calcium sulfonate base grease. But these early calcium sulfon...

Claims

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Application Information

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IPC IPC(8): C10M135/10
Inventor 刘显秋李茂森王平
Owner CHINA PETROLEUM & CHEM CORP
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