Lubricating grease composition

A technology of grease composition and lithium stearate, applied in lubricating composition, petroleum industry, etc., can solve the problems of fluidity, oil separation, heat resistance, water resistance, shear stability, etc., and achieve oil separation resistance High, stable sliding characteristics, stable reproducible effect

Inactive Publication Date: 2015-04-15
JX NIPPON OIL & ENERGY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the basic properties of grease are obtained by compounding thickeners, and fluidity (hardness), oil separation, heat resistance, water resistance, and shear stability are affected

Method used

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  • Lubricating grease composition
  • Lubricating grease composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～12、 comparative example 1～6

[0062] In Examples 1 to 12 and Comparative Examples 1 to 6, the base oil, the thickener, and each additive were put into a stainless steel container in the compounding amounts (expressed in mass %) shown in Tables 1 to 2, and heated to about 220°C to dissolve evenly. After cooling, when it became a semi-solid state, pressurized dispersion treatment was performed with a roll (three-roll mill) to obtain a grease composition having the composition shown in Tables 1-2.

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Abstract

The present invention provides a lubricating grease composition with high mechanical shear stability. The lubricating grease composition is characterized in that a fatty acid lithium-based thickener obtained by mixing lithium stearate and 12-hydroxy lithium stearate, and more than one additives containing phosphorus and / or sulfur are matched and mixed in a base oil.

Description

technical field [0001] The present invention relates to a grease composition having high stability against mechanical shear. Background technique [0002] Grease is a semi-solid oil agent made by dispersing fibrous thickeners such as metal soaps and urea compounds in liquid lubricating oil. Since it is semi-solid, it has the advantages of less oil leakage, simplification and miniaturization of the lubrication system, and is widely used in mechanical components of various industrial machines represented by automobiles, especially bearings, etc. (Non-Patent Document 1) . Specific main application targets include transportation machinery such as automobiles and railways; information equipment such as computers; iron and steel equipment such as rolling mills; and industrial machinery such as machine tools and construction machinery. [0003] In addition to base oils and thickeners, greases are blended with various performance additives to impart lubricity, oxidation stability,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10N30/00C10N50/10
Inventor 坂本清美荒井孝菖蒲祐辅设乐裕治
Owner JX NIPPON OIL & ENERGY CORP
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