Lubricant composition for internal combustion engine

一种润滑油组合物、内燃机的技术，应用在润滑组合物、石油工业、基料等方向，能够解决油消耗增大、起不到稠化内燃机油的作用等问题，达到蒸发性小、氧化稳定性优异、低温流动性优异的效果

Inactive Publication Date: 2008-11-19
IDEMITSU KOSAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the thickened internal combustion engine oil, in order to reduce the temperature change caused by temperature, a viscosity index improver is added, but it is subjected to too severe shear in the internal combustion engine, so it cannot thicken the internal combustion engine oil. At the same time, the oil Consumption often increases

Method used

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  • Lubricant composition for internal combustion engine
  • Lubricant composition for internal combustion engine
  • Lubricant composition for internal combustion engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0149] Next, although an Example demonstrates this invention more concretely, this invention is not limited to these examples.

[0150] The properties and performances of the lubricating oil compositions obtained in each example were determined by the following methods.

[0151] (1) Kinematic viscosity

[0152] Based on JIS K2283, the kinematic viscosity at 40 degreeC and 100 degreeC was measured.

[0153] (2) Viscosity index

[0154] Measured according to JIS K2283.

[0155] (3) acid value

[0156] Measured according to JIS K2501.

[0157] (4) Base value

[0158] Measured according to JIS K2501 (hydrochloric acid method).

[0159] (5) CCS viscosity

[0160] The viscosity at -35 degreeC was measured according to JISK2010.

[0161] (6) NOACK evaporation test

[0162] Measured under the conditions of 250° C. and 1 hour according to the standard PI-5S-41-93 of the Petroleum Institute.

[0163] (7) ISOT oxidation stability test

[0164] Based on the oxidation stability ...

preparation example 1

[0165] Preparation Example 1 The preparation of α-olefin oligomer hydrogenated product with 30 carbon atoms

[0166] (a) Oligomerization of decene

[0167]Into a three-necked flask with an internal volume of 5 L, 4 L (21.4 moles) of decene monomer (manufactured by Idemitsu Kosan Co., Ltd.: Linialen 10) was added under an inert gas flow, and dicyclopentadiene dissolved in toluene was further added. zirconium dichloride (complex mass: 1168 mg: 4 mmol) and methylaluminoxane (in terms of Al: 40 mmol) similarly dissolved in toluene. These mixtures were kept at 40° C. and stirred for 20 hours, and then 20 ml of methanol was added to stop the oligomerization reaction. Then, the reaction mixture was taken out from the autoclave, 4 L of a 5 mol / L aqueous sodium hydroxide solution was added thereto, and after forced stirring at room temperature for 4 hours, a liquid separation operation was performed. The upper organic layer was taken out, and unreacted decene and by-product decene is...

Embodiment 1～4 and comparative example 1

[0171] The base oils and additives shown in Table 1 were mixed at the ratios shown in Table 1 to prepare lubricating oil compositions for internal combustion engines, and their properties and performance were obtained. The results are shown in Table 1.

[0172] [Table 1]

[0173]

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Abstract

Disclosed is a lubricant composition for internal combustion engines which comprises a base oil containing at least one substance selected from an a-olefin oligomer having 16-40 carbon atoms which is obtained by oligomerizing an a-olefin having 2-20 carbon atoms by using a metallocene catalyst, a hydrogenated product of such an a-olefin oligomer, an a-olefin oligomer having 16-40 carbon atoms which is derived from an a-olefin dimer obtained by using a metallocene catalyst, a hydrogenated product of such an a-olefin oligomer and the like. This lubricant composition for internal combustion engines is excellent in low-temperature fluidity, while having low evaporativity and good oxidation stability.

Description

technical field [0001] The present invention relates to a lubricating oil composition for an internal combustion engine, and more specifically, to a lubricating oil composition for an internal combustion engine having excellent low-temperature fluidity, low evaporation, and excellent oxidation stability. Background technique [0002] In order to save energy, improving the fuel consumption of vehicles is one of the most important issues. As a countermeasure against global warming, CO 2 Reduction considerations are also important for humans. [0003] As a fuel-saving measure for internal combustion engine oil (lubricating oil for internal combustion engine), it is known that reducing the viscosity (reducing the viscosity) is effective in order to reduce the friction loss due to the internal combustion engine oil. However, if the viscosity of the internal combustion engine oil is reduced, the wear resistance that the internal combustion engine oil should have decreases, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M105/04C10N30/00C10N30/02C10N30/08C10N30/10C10N40/25C10N60/02C10N70/00
CPCC10N2230/10C10N2230/02C10M2203/1025C10M105/04C10N2230/08C10N2270/00C10N2260/02C10N2240/10C10N2220/028C10N2270/02C10N2030/02C10N2030/08C10N2030/10C10N2040/25C10N2060/02C10N2070/00C10N2020/071C10N2070/02
Inventor 山田亮
Owner IDEMITSU KOSAN CO LTD
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