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Lubricating oil composition

A technology of lubricating oil composition and molybdenum compound, applied in the directions of lubricating composition, petroleum industry, additives, etc., can solve the problem of not showing the excellent anti-friction properties of molybdenum-containing additives, and achieve improved fuel consumption reduction, improved friction reduction, Improved anti-friction performance

Pending Publication Date: 2019-10-08
INFINEUM INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the engine is operated at a temperature below 80°C, the excellent antifriction properties of molybdenum-containing additives are not exhibited

Method used

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  • Lubricating oil composition
  • Lubricating oil composition
  • Lubricating oil composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0220] The Schwingung Reibung Verschleiss "SRV" supplied by Optimol was used to evaluate the friction and wear properties of liquid lubricants in a wide range of applications. The oil under test forms a film between the ball and the disc on which the ball makes a sliding or reciprocating stroke and the friction between metal-to-metal contacts is measured. This is used to evaluate the boundary state friction properties of the oil. Different samples and configurations can be used in SRV. In these examples, the average friction was recorded at a frequency of 20 Hz and a temperature of 80°C.

[0221] Two oils having the formulations given in Table 1 below were tested and the average coefficient of friction was recorded at each load shown in Table 2 below.

[0222] Table 1

[0223] additive Oil 1 oil 2 Oil 3 Oil 4 Additive set 1

10.29 10.29 Additive set 8

9.95 9.95 Molybdenum Dithiocarbamate 2

0.70 0.70 0.80 0.80 T...

Embodiment 2

[0234] Four other oils having the formulations given in Table 3 below were tested and the average coefficients of friction were recorded at each load shown in Table 4 below.

[0235]table 3

[0236] additive Oil 5 Oil 6 Oil 7 Oil 8 Additive set 6

9.95 9.95 9.95 9.95 Molybdenum Dithiocarbamate 2

0.80 0.80 0.80 0.80 Irgamet39 5

0.01 0.01 0.01 0.01 viscosity improver 6.60 6.60 6.60 6.60 Ethoxylated Amine Friction Modifiers 7

0 0.10 0.20 0.30 Group III base oil margin margin margin margin Mo, ppm (ASTM D5185) 800 800 800 800

[0237] 6 The additive packages for all oils in Table 3 had the same composition and contained a dispersant combination containing non-borated and boronated polyisobutenyl succinimide dispersants, calcium salicylate detergent, magnesium salicylate detergent, hindered Combinations of phenolic and diphenylamine antioxidants and zinc dialkyldithiophosphates ...

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PUM

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Abstract

The invention relates to reducing friction coefficient in automotive lubricating oil, in particular although not exclusively at lower temperature by combining molybdenum dithiocarbamate additives withbenzotriazole derivative corrosion inhibitors.

Description

[0001] field of invention [0002] The present invention relates to automotive engine lubricating oils exhibiting improved antifriction properties and reduced combustion consumption properties, especially at lower operating temperatures, especially at engine operating temperatures below 80°C. [0003] Background of the invention [0004] Molybdenum-containing additives are known to be used in automotive engine lubricants to improve anti-friction properties. However, it has generally been found that the effectiveness of such additives is not achieved until the engine temperature reaches about 80°C. Therefore, when the engine is operated at a temperature below 80°C, the excellent antifriction properties of molybdenum-containing additives are not exhibited. [0005] Benzotriazole compounds have been used for many years as corrosion inhibitors in lubricating oil compositions to mitigate copper corrosion. [0006] The object of the present invention is to further improve the frict...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/06C10N40/25
CPCC10M169/04C10M2215/223C10M2219/068C10M2215/042C10N2030/06C10N2040/255C10N2010/12C10M141/08C10M2215/26C10M141/12C10N2040/25C10M2219/066C10M125/22C10M135/16C10M133/44C10M133/06C10M129/16C10M129/08C10M125/26C10M137/105C10N2030/12C10M2201/066C10N2030/10C10N2030/04C10N2030/54C10M129/54C10M133/08C10M135/18C10M137/10C10M2207/144C10M2223/045C10N2010/04C10N2020/02
Inventor 松本骏亮河野邦广
Owner INFINEUM INT LTD