Lubricating oil additive composition for internal combustion engine

a technology of lubricating oil additive and composition, which is applied in the direction of lubricant composition, organic chemistry, fuels, etc., can solve the problems of increasing black smoke and pm, reducing the nosub>x /sub>level and the pm level of exhaust gas, and reducing the base number. , to achieve the effect of increasing the base number

Inactive Publication Date: 2005-08-18
IDEMITSU KOSAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005] The present invention has been conceived under such circumstances, and an object of the present invention is to provide a lubricating oil additive for internal combustion engines, which additive enables preparation of a lubricating oil composition for internal combustion engines having an enhanced base number without impairing the performance of an exhaust gas treatment apparatus such as a PM trap or an oxidation catalyst member. Another object of the invention is to provide a lubricating oil additive composition for internal combustion engines. Still another object of the invention is to provide a lubricating oil composition for internal combustion engines containing the lubricating oil additive composition.

Problems solved by technology

Therefore, reduction of the NOx level and the PM level of exhaust gas is a problem to be immediately solved.
However, when the combustion peak temperature is lowered, generation of black smoke and PM increases, thereby requiring provision of an exhaust gas post-treatment apparatus.
Thus, when a conventional diesel engine oil is employed, a metallic component contained in the oil causes plugging of the apparatus.
When the metallic component level of the oil is lowered (i.e., upon reduction in the amount of a metallic detergent and an anti-wear agent), detergency and wear resistance are deteriorated.

Method used

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  • Lubricating oil additive composition for internal combustion engine
  • Lubricating oil additive composition for internal combustion engine
  • Lubricating oil additive composition for internal combustion engine

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0043] Diethylenetriamine (DETA) (10.3 g, 0.1 mol) dissolved in xylene (20 mL) was placed in a 200-mL separable flask, and purged with nitrogen. The temperature of the solution was maintained at 50° C. To the solution, hexadecenylsuccinic anhydride (HDSA) (32.4 g, 0.1 mol) dissolved in xylene (50 mL) and a mineral oil (17.5 g, equivalent to 150 neutral and to about 30 mass % in the final product) were added dropwise under sufficient stirring conditions. The temperature of the reaction mixture rose to about 80° C. through exothermic reaction heat. The mixture was allowed to react at about 100° C. for four hours under nitrogen flow while dehydration was performed. Thereafter, unreacted DETA, formed water, and xylene were removed under reduced pressure, followed by cooling and filtration, thereby yielding 57 g of hexadecenylsuccinimide having a base number (as determined through the HCl method) of 101 mg KOH / g.

example 2

[0044] The procedure of Example 1 was repeated, except that aminoethylpiperazine (AEP) (12.9 g, 0.1 mol) was used instead of DETA, to thereby yield 58 g of hexadecenylsuccinimide having a base number of 98 mg KOH / g.

example 3

[0045] The procedure of Example 1 was repeated, except that a mixture of AEP (6.5 g, 0.05 mol) and DETA (5.2 g, 0.05 mol) was used instead of DETA, to thereby yield 57 g of hexadecenylsuccinimide having a base number of 93 mg KOH / g.

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Abstract

The invention provides a lubricating oil additive for internal combustion engines which additive enables to prepare a lubricating oil composition for internal combustion engines having an enhanced base number without impairing the performance of an exhaust gas treatment apparatus such as a PM trap or an oxidation catalyst member; a lubricating oil additive composition for internal combustion engines; and a lubricating oil composition for internal combustion engines containing the lubricating oil additive composition.
The invention is directed to a lubricating oil additive composition for internal combustion engines including a succinimide compound represented by formula (1):
(wherein R1 represents a C6-C30 alkenyl group or alkyl group; each of R7, R8, R9, and R10 represents hydrogen or a C1-C3 alkyl group; q is an integer from 2 to 4; n is an integer from 0 to 3; r is an integer from 2 to 4; and A represents an amino group or an N-piperazyl group), or a boron-introduced product thereof; and to use thereof.

Description

TECHNICAL FIELD [0001] The present invention relates to a lubricating oil additive composition for internal combustion engines, and to a lubricating oil composition for internal combustion engines containing the additive composition. The lubricating oil composition for internal combustion engines exhibits excellent detergency at high temperature, exhibits excellent heat resistance, has low ash content, and does not affect an exhaust gas treatment apparatus such as a particulate matter (hereinafter abbreviated as PM) trap or an oxidation catalyst member for oxidizing uncombusted fuel or lubricating oil, and therefore can meet future emission gas regulations. BACKGROUND ART [0002] Conventionally, lubricating oils for internal combustion engines, particularly those for diesel engines, have employed a metallic detergent-dispersant and an ash-less detergent-dispersant in combination. Generally employed metallic detergent-dispersants include sulfonates, phenates, salicylates, phosphonates...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10M133/16C10M133/56C10M141/06C10M141/12
CPCC07D207/412C10N2260/14C10M133/56C10M141/06C10M141/12C10M2203/1006C10M2207/284C10M2207/285C10M2207/289C10M2207/30C10M2215/086C10M2215/221C10M2215/28C10N2230/04C10N2230/08C10N2230/38C10N2230/45C10N2230/50C10N2230/52C10N2240/10C10N2240/102C10N2240/103C10N2260/12C10M133/16C10N2030/04C10N2030/08C10N2040/25C10N2060/12C10N2060/14C10N2030/38C10N2030/45C10N2030/50C10N2030/52C10N2040/252C10N2040/253
Inventor KOSHIMA, HIROAKITERADA, IZUMIKATAFUCHI, TADASHIKAMANO, HIDEKI
Owner IDEMITSU KOSAN CO LTD
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