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Lubricating Compositions

a technology of lubricating compositions and compositions, applied in the direction of lubricating compositions, liquid carbonaceous fuels, fuels, etc., can solve the problem of reducing fuel economy

Inactive Publication Date: 2013-01-17
THE LUBRIZOL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The lubricating composition effectively imparts improved friction coefficients, viscosity index, shear stability, low temperature performance, reduced operating temperatures, and enhanced wear protection while maintaining acceptable fuel economy, as demonstrated by improved axle efficiency and coefficient of friction tests.

Problems solved by technology

In addition driveline power transmitting devices such as gears or transmissions, especially axle fluids and manual transmission fluids (MTFs), present highly challenging technological problems and solutions for satisfying the multiple and often conflicting lubricating requirements, whilst providing at least one of wear performance, durability and fuel economy.
Conversely, lower viscosity fluids also contribute to elevated gear and transmission operating temperatures, which are believed to reduce fuel economy.

Method used

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  • Lubricating Compositions

Examples

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Effect test

example 1

[0145]a gear oil containing 10 wt % of a commercially available additive package and about 90 wt % of a C12-15-alkyl alcohol-initiated polyalkylene glycol derived from propylene glycol (commercially available from Bayer with the trade name Actaclear™ ND-21). The gear oil further contains about 5 wt % of a viscosity index improver (esters of maleic anhydride-styrene copolymers), about 4.6 wt % of a sulphurised olefin, about 1.9 wt % of phosphorus antiwear agents, about 3.25 wt % of antioxidants (includes phenolic and aminic compounds).

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Abstract

The invention provides a lubricating composition containing hydrocarbyl-capped polyoxyalkylene polyol. The invention further provides lubricating compositions containing the hydrocarbyl-capped polyoxyalkylene polyol; and a method for lubricating a mechanical device with the lubricating composition.

Description

FIELD OF INVENTION[0001]The present invention relates to a lubricating composition comprising hydrocarbyl-capped polyoxyalkylene polyol. The invention further provides lubricating compositions containing the hydrocarbyl-capped polyoxyalkylene polyol; and a method for lubricating a mechanical device with the lubricating composition.BACKGROUND OF THE INVENTION[0002]It is known to lubricate mechanical devices such as driveline power transmitting devices, internal combustion engines or hydraulic systems with a lubricant comprising a polyalkylene glycol oil of lubricating viscosity.[0003]In addition driveline power transmitting devices such as gears or transmissions, especially axle fluids and manual transmission fluids (MTFs), present highly challenging technological problems and solutions for satisfying the multiple and often conflicting lubricating requirements, whilst providing at least one of wear performance, durability and fuel economy. One of the important parameters influencing ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10M105/18C10M137/00
CPCC10M107/34C10M145/36C10N2240/046C10N2240/045C10N2240/044C10N2240/042C10N2240/04C10N2230/06C10N2230/02C10M2227/061C10M2227/06C10M169/044C10M2205/04C10M2207/023C10M2207/026C10M2209/103C10M2209/1033C10M2209/104C10M2209/1045C10M2209/105C10M2209/1055C10M2209/1065C10M2209/107C10M2209/1075C10M2209/108C10M2209/1085C10M2215/064C10M2215/066C10M2219/022C10M2223/00C10M2223/043C10M2223/047C10M2223/063C10M2209/086C10N2030/02C10N2030/06C10N2040/042C10N2040/044C10N2040/04C10N2040/045C10N2040/046
Inventor BUSH, JAMES H.
Owner THE LUBRIZOL CORP