Lubricant base oil and lubricant composition

a technology of lubricant base oil and composition, applied in the field of lubricating base oil, can solve the problems of increasing the risk of ignition, and achieve the effects of low vapor pressure, no risk of ignition, and excellent heat resistan

Inactive Publication Date: 2013-04-25
IDEMITSU KOSAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0009]Accordingly, in view of the above, an object of the invention is to provide a lubricating base oil exhibiting a low vapor pressure even with a low viscosity, no risk of ignition, an

Problems solved by technology

A lubricating oil generally includes an organic substance mainly containing hydrocarbons, where lowering the viscosity n

Method used

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  • Lubricant base oil and lubricant composition
  • Lubricant base oil and lubricant composition
  • Lubricant base oil and lubricant composition

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[0061]Next, the invention will be further described in detail based on Examples and Comparatives, which by no means limit the invention. It should be noted that the properties (i.e., kinematic viscosity, viscosity index, pour point, 5%-mass reducing temperature, friction property and metal corrosion behavior) of the lubricating base oil and the lubricating oil composition were evaluated or measured according to the following methods.

[0062](1) Kinematic Viscosity

[0063]A kinematic viscosity was measured according to “Crude petroleum and petroleum products-Determination of kinematic viscosity and calculation of viscosity index from kinematic viscosity” defined in JIS (Japanese Industrial Standards) K2283.

[0064](2) Viscosity Index

[0065]A viscosity index was measured according to “Crude petroleum and petroleum products-Determination of kinematic viscosity and calculation of viscosity index from kinematic viscosity” defined in JIS K2283.

[0066](3) Pour Point

[0067]A pour point was measured ...

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Abstract

A lubricating base oil includes at least one of ionic liquids containing a compound represented by a formula (1): Z+A−, in which Z+ represents a cation and A− represents an anion, in which Z+ is a cyclic quaternary ammonium ion having two different side chains and A− is a conjugated amide ion.

Description

TECHNICAL FIELD[0001]The present invention relates to a lubricating base oil containing an ionic liquid, and a lubricating oil composition.BACKGROUND ART[0002]A lubricating oil generally includes an organic substance mainly containing hydrocarbons, where lowering the viscosity necessarily increases vapor pressure and entails evaporation loss of the lubricating oil and increase in risk of ignition. Especially, the lubricating oil (e.g. hydraulic oil) used in a facility such as machinery in an ironworks that handles high-temperature objects requires fire resistance in order to avoid fire accidents. Further, precision motors used for recent information equipment (e.g. hard disk) requires a lubricating oil exhibiting less evaporation and less scattering in order to minimize adverse effects on neighboring precision devices.[0003]On the other hand, in recent years, it has been reported that an ionic liquid containing cations and anions exhibits an excellent thermal stability and a high io...

Claims

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Application Information

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IPC IPC(8): C10M105/70
CPCC10N2230/10C10M105/70C10M105/72C10N2220/04C10M105/74C10M2219/0406C10M2215/2203C10N2220/022C10N2240/30C10M2215/041C10M2223/0603C10N2220/021C10M2215/223C10M2215/0425C10M171/00C10N2230/12C10M2223/041C10N2240/02C10N2020/02C10N2020/04C10N2030/10C10N2030/12C10N2040/02C10N2040/30C10N2020/077C10M133/38C10M137/10C10M159/12C10M171/04
Inventor YOSHIDA, YUKIOFUJINAMI, YUKITOSHI
Owner IDEMITSU KOSAN CO LTD
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