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Lubricating composition

A technology of lubricating composition and comb polymer, which is applied in the direction of lubricating composition, petroleum industry, etc., and can solve the problems of long-term or continuous fuel economy of undisclosed comb polymer

Inactive Publication Date: 2015-03-25
SHELL INT RES MAATSCHAPPIJ BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no disclosure in US2010 / 0190671 of the use of the comb polymers for providing improved long-term or sustained fuel economy

Method used

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Examples

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[0024] Poly-alpha olefin base oils (PAOs) and their preparation are well known in the art. Preferred poly-alpha olefin base oils that may be used in the lubricating compositions of the present invention may be derived from linear C 2 -C 32 , preferably C 6 -C 16 , alpha olefins. Particularly preferred starting materials for the poly-alphaolefins are 1-octene, 1-decene, 1-dodecene and 1-tetradecene.

[0025] In view of the high production costs of PAOs, the use of base oils of Fischer-Tropsch origin is strongly preferred over PAO base oils. Thus, preferably, the base oil contains more than 50 wt.%, preferably more than 60 wt.%, more preferably more than 70 wt.%, even more preferably more than 80 wt.%. Most preferably greater than 90 wt.% Fischer-Tropsch derived base oil. In a particularly preferred embodiment, not more than 5 wt.%, preferably not more than 2 wt.%, of the base oil is not a base oil of Fischer-Tropsch origin. Even more preferably 100% by weight of the base...

Embodiment

[0103] lubricating oil composition

[0104] A wide variety of engine oils are formulated for use in crankcase engines.

[0105] Table 1 shows the properties of the base oils used. Table 2 shows the composition and properties of the fully formulated engine oil formulations tested; the contents of the components are given in wt.%, based on the total weight of the fully formulated formulations.

[0106] "Base Oil 1" is a commercially available Group III base oil with a kinematic viscosity (ASTM D445) of 4.2 cSt (average) at 100°C. Base Oil 1 is commercially available from, for example, SK Energy (Ulsan, South Korea) (under the trade name "Yubase 4").

[0107] "Base Oil 2" is a commercially available Group III base oil with a kinematic viscosity (ASTM D445) of 6.5 cSt (average) at 100°C. Base Oil 2 is commercially available from, for example, SK Energy (Ulsan, South Korea) (under the trade name "Yubase 6").

[0108] "Base Oil 3" is a Fischer-Tropsch derived base oil ("GTL 4") ...

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Abstract

A lubricating composition for use in the crankcase of an engine comprising a base oil and one or more additives, wherein the base oil comprises a Fischer-Tropsch derived base oil and wherein the lubricating composition comprises one or more comb polymers. The lubricating composition of the present invention has been found to improve sustained fuel economy properties whilst obtaining improved piston cleanliness properties and improved dispersancy properties.

Description

technical field [0001] The present invention relates to lubricating compositions comprising a base oil and one or more additives, especially for use in engine crankcases. In particular, the present invention relates to lubricating compositions comprising a base oil and one or more additives for use in engine crankcases for providing improved sustained fuel economy, as well as improved dispersibility and piston cleanliness in diesel engines. Background technique [0002] Government regulations and market demands continue to emphasize the protection of fossil fuels in the transportation industry. There is an increasing demand for more fuel-efficient vehicles in order to meet the CO 2 emission reduction target. Therefore, any incremental improvement in fuel economy (FE) in the automotive field is of great importance. Lubricants can play an important role in reducing fuel consumption in vehicles, and there is a continuing need to improve the fuel economy performance, particul...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N20/04C10N30/04C10N40/25
CPCC10M169/041C10M2203/1025C10M2205/02C10M2205/024C10M2205/04C10M2205/06C10M2205/08C10M2205/173C10M2209/04C10M2209/062C10M2209/084C10M2209/086C10N2020/01C10N2020/04C10N2010/04C10N2020/011C10N2020/071C10N2030/04C10N2030/02C10N2030/43C10N2030/45C10N2030/54C10N2030/68C10N2030/74C10N2040/25C10N2020/02C10N2060/02C10M169/047
Inventor M·J·维拉斯R·T·迪克森
Owner SHELL INT RES MAATSCHAPPIJ BV
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