Ureido lubricating grease and its preparation method

A urea-based lubricating grease, urea-based technology, applied in lubricating compositions, petroleum industry, thickeners, etc., can solve problems such as failure to meet specification requirements, poor thickening ability of hydrogenated oil, thin lubricating grease, etc., to overcome The effect of poor thickening ability, high dropping point and low bearing vibration value

Inactive Publication Date: 2004-05-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, after testing, it was found that the thickening ability of hydrogenated oil is poor. In the case of the same amount of thickener, the lubricating grease prepared solely with hydrogenated oil as the base oil is soft and thin, which cannot meet the specification requirements. Easy to splash during operation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Prepare 100g of lubricating grease with a thickening amount of 30%. Weigh 52.5g hydrogenated oil (viscosity 10mm 2 / s) and divided into two parts, put dodecylamine and TDI into hydrogenated oil and heat and melt, wait until the temperature reaches 80°C, mix and react and stir, continue heating until 210°C, add 17.5g castor oil (viscosity 8mm 2 / s), cooled to room temperature and ground twice. The prepared lubricating grease is numbered LBG-1. The analysis results are shown in Table 2.

Embodiment 2

[0020] Prepare 100g of lubricating grease with a thickener of 20%. Weigh 54g hydrogenated oil (viscosity 12mm 2 / s) and divided into two parts, put octadecylamine and MDI into hydrogenated oil, heat and melt, mix and react when the temperature reaches 70°C and stir, continue heating until 210°C, add 26g rapeseed oil (viscosity 10mm 2 / s), cooled to room temperature and ground twice. The prepared lubricating grease is numbered LBG-2. The analysis results are shown in Table 2.

Embodiment 3

[0022] Prepare 100g of lubricating grease with a thickener of 20%. Weigh 60g hydrogenated oil (viscosity 10mm 2 / s) and divided into two parts, put octadecylamine and MDI into hydrogenated oil, heat and melt, mix and react when the temperature reaches 80°C and stir, continue heating until 210°C, add 10g rapeseed oil and 10g castor oil, Cool to room temperature and grind twice. The prepared lubricating grease is numbered LBG-3. The analysis results are shown in Table 2.

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Abstract

An carbamide-base lubricating grease contains hydrogenated mineral oil, plant oil and carbamide-base thickening agent. Its advantages are high thickening power and dripping point, and low vibration and noise of bearing.

Description

technical field [0001] The invention relates to lubricating grease and its preparation method, in particular to urea-based lubricating grease and its preparation method. technical background [0002] Urea-based grease is a high-performance grease with high dropping point and good oxidation stability. It is widely used in automobile and steel industries, and it is also used more and more in bearings. The vast majority of urea-based greases are prepared from commonly used mineral oil or synthetic oil. Mineral oil introduces more impurities, causing abnormal vibration of the bearing during application, increasing wear and shortening the life of the bearing; synthetic oil is more expensive. There are also those who use refined hydrogenated mineral oil to prepare urea-based grease. At present, there are two patents on the use of refined hydrogenated mineral oil to prepare urea-based grease. One is JP 06108078, and its composition is the high purity oil that contains at least 20%...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M115/08
Inventor 杨玮姚智勤孙洪伟
Owner CHINA PETROLEUM & CHEM CORP
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