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Gear oil composition

A technology of composition and gear oil, which is applied in lubricating compositions, petroleum industry, additives, etc., can solve problems such as cost increase, achieve excellent corrosion resistance and oxidation stability, and improve corrosion resistance and oxidation stability.

Inactive Publication Date: 2012-12-12
JAPAN ENERGY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] For example, when synthetic oil represented by poly-alpha-olefin (PAO) is used as the base oil used in the lubricating oil composition, although it is easy to solve the performance part of the above-mentioned problem, there is a problem that the cost will be greatly increased. raised questions

Method used

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  • Gear oil composition

Examples

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Embodiment

[0048] Hereinafter, examples are given to illustrate the present invention in further detail, but the present invention is not limited in any way by the following examples.

[0049] [Preparation of gear oil composition]

[0050] In accordance with the formulation ratios shown in the upper part of Table 1 and Table 2 (the amount added is mass % based on the total amount of the composition), using the following lubricating oil base oil and additives, prepared Example 1 and Comparative Examples 1 to 13 Gear oil composition.

[0051]

[0052] [A component: Lubricant base oil]

[0053] A-1: Mineral oil (kinematic viscosity at 100°C: 7.6mm 2 / s, viscosity index: 129, aromatic component: 0.0% by mass, sulfur component: 0.0008% by mass)

[0054] a-2: Mineral oil (kinematic viscosity at 100°C: 7.6mm 2 / s, viscosity index: 100, aromatic component: 5.9% by mass, sulfur component: 0.16% by mass)

[0055]

[0056] [B component: extreme pressure agent]

[0057] B-1: Dilauryl phosp...

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Abstract

The present invention provides a gear oil composition, which is high level with low-temperature fluidity and shearing stabilizing ability, having moderate extreme pressure property, and having excellent corrosion resistance and oxygenize stabilizing ability.The gear oil composition is characterized in that: lubricating oil basic oil (A) with viscosity index greater or equal 110 containing : at least one phosphorus series extreme pressure agent (B) selecting from families composed by phosphite ester and phosphoric acid esters with phosphorus element 0.05-0.5 wt%, azote series anticorrosion agent (C-1) with 0.005-0.2wt%, azote sulphur series anticorrosion agent (C-2) with 0.005-0.2 wt%, ethylene -alpha -olefin copolymer (D) as viscosity index improver with 1-10wt%, and 0.02-0.2wt% zinc element zinc dialkyl dithiophosphate (E) with sulphur ingredient less than or equal to 1.4wt%.

Description

technical field [0001] The invention relates to a gear oil composition, in particular to a gear oil composition used in a high-speed, high-load environment. Background technique [0002] Currently, various types of lubricating oils are used in various industrial fields in order to reduce the friction and wear of contact surfaces when metals come into contact with each other and slide. Among the lubricating oils, gear oils are required to have excellent extreme pressure properties, oxidation stability, wear resistance, shear stability, etc. in addition to lubricity under usage conditions. In order to satisfy these properties, gear oils have conventionally been manufactured by blending various additives such as extreme pressure agents, anticorrosion agents, antioxidants, and viscosity index improvers into base oils containing mineral oils and / or synthetic oils. [0003] For example, Japanese Patent Application Laid-Open No. 2002-371291 (Patent Document 1) discloses a lubricat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M143/00C10M137/10C10N40/04C10N30/06C10N30/02
CPCC10M127/02C10M137/04C10M169/04C10N2030/02C10N2030/10C10N2030/12
Inventor 真锅义隆长沼伯之
Owner JAPAN ENERGY CORP