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8-uril grease lubricant and its preparation method

A technology of lubricating grease and lubricating oil base oil, which is applied in the direction of lubricating composition, petroleum industry, thickener, etc., can solve the problem of few reports of octaurea lubricating grease, and achieve the effect of good extreme pressure performance

Active Publication Date: 2012-04-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the reports of the prior art mainly focus on the preparation and synthesis of diurea grease, but there are few reports on octaurea grease

Method used

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  • 8-uril grease lubricant and its preparation method
  • 8-uril grease lubricant and its preparation method
  • 8-uril grease lubricant and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] First, mix about 145 grams of 500SN (kinematic viscosity at 40°C is 92-98cSt) and 37.8 grams of MDI and heat it to 50°C, slowly add 9.08 grams of ethylenediamine, raise the temperature to 80°C, react for 30 minutes, and slowly add 4.54 grams of ethylenediamine , keep the temperature at 80°C, react for 30 minutes, mix about 145 grams of base oil and 20.37 grams of octadecylamine, heat it to 60°C and add it to the above mixture, keep the temperature at 80°C, react for 30 minutes, continue to heat up to 210°C, and then add about 145 grams of Cool the base oil to about 100°C and grind it.

Embodiment 2

[0041]First, mix about 146.67 grams of 150BS (kinematic viscosity of 29cSt at 100°C) and 23.77 grams of TDI and heat it to 40°C, slowly add 5.57 grams of propylenediamine, raise the temperature to 70°C, react for 30min, slowly add 2.79 grams of propylenediamine, and keep the temperature constant 70°C, react for 30 minutes, mix about 146.67 grams of base oil and 27.88 grams of dodecylamine, heat to 50°C and add to the above mixture, keep the temperature at 70°C, react for 30 minutes, continue to heat up to 200°C, and then add about 146.67 grams of base oil Cool to about 80°C and grind.

Embodiment 3

[0043] First, mix about 148.33 grams of PAO10 synthetic oil (kinematic viscosity at 100 °C is 9.8-10.2 cSt) and 31.27 grams of HDI and heat it to 45 °C, slowly add 10.05 grams of p-phenylenediamine, heat up to 75 °C, react for 30 minutes, and slowly add 5.03 gram of p-phenylenediamine, keep the temperature at 75°C, react for 30min, mix about 148.33g of base oil and 8.66g of aniline and heat it to 55°C, add it to the above mixture, keep the temperature at 75°C, react for 30min, continue to heat up to 205°C, then add 148.33 About one gram of base oil is cooled to about 90°C for grinding.

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Abstract

An 8-uril grease lubricant contains, by weight, 70-90% of lubricating base oil and 10-30% of an 8-uril densifier calculated according to the total weight of the grease lubricant being 100%. The preparation method of the 8-uril grease lubricant provided by the invention comprises a step of respectively performing reactions between diisocyanate and diamines and between diisocyanate and monoamines to obtain the 8-uril grease lubricant. In comparison with a 2-uril grease lubricant, the 8-uril grease lubricant has higher dropping point, better extreme pressure performance, colloid stability and shearing stability.

Description

technical field [0001] The invention relates to an octaurea lubricating grease and a preparation method thereof Background technique [0002] Grease is composed of grease, thickener and additives. Thickener is an indispensable component in grease, and its properties are one of the main factors that directly affect the performance of grease. Polyurea thickener and polyurea grease are developed to meet the more stringent requirements for lubricating materials due to the rapid development of modern industrial technology and equipment. [0003] With the rapid development of modern industry, the requirements for lubricating materials are becoming more and more stringent. Mechanical equipment operating continuously under high load, high speed and high temperature, the high temperature range of lubricating grease reaches 175-235 ℃ or higher, and requires a long Long service life of lubrication to prolong grease change cycle, improve production efficiency and reduce production cost...

Claims

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Application Information

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IPC IPC(8): C10M169/06C10M119/24C10M177/00C10N50/10C10N30/06
Inventor 刘磊孙洪伟何懿峰段庆华
Owner CHINA PETROLEUM & CHEM CORP
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