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Lubricating oil additive and lubricating oil composition containing the same

Inactive Publication Date: 2007-07-05
ADEKA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0015] According to the present invention, a lubricating oil additive containing a quaternary ammonium salt having a base number of at least 10 mgKOH / g can provide a lubricating oil composition having an extremely small amount of metal components such as calcium or magnesium and excellent cleaning performance.

Problems solved by technology

However, part of a metal-based cleaning agent is burnt together with fuel, and metal components in the metal-based cleaning agent cause various problems.
To be specific, there arises the following problem: metal components released together with exhaust gas adhere to an exhaust gas catalyst to reduce exhaust gas clarifying performance, and, in a diesel engine, reduces the particulate matter (PM) removal performance of a diesel particulate filter (DPF) and inhibits the reuse of the DPF.

Method used

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  • Lubricating oil additive and lubricating oil composition containing the same
  • Lubricating oil additive and lubricating oil composition containing the same
  • Lubricating oil additive and lubricating oil composition containing the same

Examples

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examples

[0050] Hereinafter, the present invention will be described more specifically by way of examples. In the following examples, the term “%” means “% by mass” unless otherwise stated.

[0051] At first, a reference oil having the formulation shown below was prepared. Next, a lubrication oil composition of each of Examples 1 to 5 and Comparative Examples 1 to 5 was prepared by means of the following reference oil and each additive according to the formulation shown in Table 1 below. In each of Examples 1 to 5 and Comparative Examples 1 to 4, an additive was added in such a manner that the total base number of a lubricating oil composition would be 5 mgKOH / g.

[0052] Mineral oil-based high-viscosity-index (VI) oil

[0053] Dynamic viscosity 4.1 mm2 / s (at 100° C.), 18.3 mm2 / s (at 40° C.) viscosity index (VI)=126

[0054] [Reference Oil Formulation]

Base oil100parts by massSuccinimide-based dispersant5.0parts by massPhenol-based antioxidant0.3part by massAmine-based antioxidant0.3part by massZinc ...

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PUM

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Abstract

The present invention provides a lubricating oil additive with excellent cleaning performance which does not include metal components such as calcium or magnesium, and a lubricating oil composition containing the same. The lubricating oil additive according to the present invention is characterized by containing a quaternary ammonium salt having a base number of at least 10 mgKOH / g. Examples of such a quaternary ammonium salt include quaternary ammonium salts obtained by subjecting counter anions in cationic surfactants such as tetraalkylammonium chloride and tetraalkylammonium sulfate to salt-exchange.

Description

TECHNICAL FIELD [0001] The present invention relates to a lubricating oil additive and a lubricating oil composition containing the same. BACKGROUND ART [0002] A metal-based cleaning agent has been conventionally added to engine oil for the purpose of lengthening the lifetime of the engine oil. The metal-based cleaning agent functions to prevent the deposition of sludge in an engine and to neutralize acid substances as by-products of the burning of fuel or as products obtained as a result of deterioration of the engine oil. Perbasic sulfonate, phenate, salicylate, or the like has been used in such metal-based cleaning agents. Of those, a metal-based cleaning agent composed of perbasic calcium sulfonate, calcium salicylate, magnesium sulfonate, or the like has been most generally used because it is relatively inexpensive and has excellent cleaning performance. [0003] However, part of a metal-based cleaning agent is burnt together with fuel, and metal components in the metal-based cle...

Claims

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Application Information

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IPC IPC(8): C10L1/22C10M101/02C10M133/06C10M125/00C10M125/26C10M129/04C10M129/26C10M129/32C10M129/84C10M133/04C10M133/16C10M169/04C10N30/04C10N40/04C10N40/25
CPCC10M133/04C10M133/06C10N2240/10C10N2240/04C10N2230/52C10N2230/12C10N2230/10C10N2230/06C10N2230/041C10M133/16C10M169/04C10M2203/1006C10M2207/026C10M2207/10C10M2207/262C10M2215/02C10M2215/04C10M2215/042C10M2215/06C10M2215/064C10M2215/08C10M2215/28C10M2219/046C10M2223/045C10N2210/02C10N2230/04C10N2010/04C10N2030/041C10N2030/04C10N2030/06C10N2030/10C10N2030/12C10N2030/52C10N2040/04C10N2040/25
Inventor KOISHIKAWA, NAOMI
Owner ADEKA CORP
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