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Lubricating oil composition for industrial machinery and equipment

A technology of lubricating oil composition and industrial machinery, which is applied in the direction of lubricating composition, petroleum industry, additives, etc., can solve the problems of sludge generation and friction coefficient increase of sliding parts, etc., and achieve excellent sludge resistance and anti-stick-slip performance Excellent wear and friction properties, sludge resistance and extreme pressure properties

Inactive Publication Date: 2007-03-28
NIPPON OIL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, until now, zinc-based anti-wear agents such as zinc dithiophosphate (ZnDTP) have been widely used as anti-wear agents for hydraulic oils, but the use of zinc-based anti-wear agents can lead to sludge generation
In addition, the anti-wear effect produced by using ZnDTP, etc. is realized by forming a hard film such as iron phosphate on the metal surface, but the formation of this film will lead to an increase in the friction coefficient of the sliding part, so it cannot be said from the point of view of energy saving. is preferred

Method used

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  • Lubricating oil composition for industrial machinery and equipment
  • Lubricating oil composition for industrial machinery and equipment
  • Lubricating oil composition for industrial machinery and equipment

Examples

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Embodiment

[0466] The present invention will be described in more detail below by way of examples. In addition, the gear oil, the lubricating oil for a paper machine, the lubricating oil for a sliding guide surface, and the hydraulic oil which are specific embodiments of the lubricating composition of the present invention will be described sequentially through respective examples.

[0467] [Gear Oil Composition-1]

[0468] This example relates to an embodiment in which a gear oil is obtained by blending the above-mentioned base oil with the component (C-1), the component (C-2), or a mixture thereof.

[0469] The types and amounts of the base oils tested and the additives added therein are shown below. In addition, the test method performed on each lubricating oil composition compounded is similarly shown below. The obtained test results are shown in Tables 1 to 3.

[0470] (IAE oil temperature)

[0471] According to the IAE gear test stipulated in IP166 / 77 (92), the gear box is oper...

Embodiment 6～8

[0887] In Examples 6 to 8, lubricating compositions having the compositions shown in Table 4 were prepared using the above-mentioned base oil, additives, and the following oily improvers.

[0888] (D) Ester oiliness improver

[0889] D1: Esters of sorbitan and oleic acid (25mol% sorbitan monooleate, 40mol% sorbitan dioleate, 30mol% sorbitan trioleate, Oleate 5mol%)

[0890] D2: Triesters of mixed fatty acids of glycerol, acetic acid and fatty acids with 16 to 20 carbon atoms (fatty acid composition: 66 mol% of acetic acid, 30 mol% of straight-chain saturated fatty acids with 16 to 20 carbon atoms, 18 carbon atoms Straight chain unsaturated fatty acid 4mol%)

[0891] D3: Esters of glycerin and branched saturated fatty acids with 16 to 20 carbon atoms (monoglyceride 25 mol%, diglyceride 75 mol%, triglyceride 0 mol%).

[0892] Next, for each of the lubricating oil compositions obtained in Examples 6 to 8, a thermal stability test, an SRV (micro-reciprocating dynamic friction) ...

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Abstract

A lubricative composition for industrial machinery and equipment which comprises a base oil selected from among mineral oils, fats and oils, synthetic oils, and mixtures of two or more of them, and at least one additive selected from among the following components (A) to (D): (A): (A-1) a phosphorus-containing carboxylic acid and / or (A-2) a thiophosphoric ester (B): a dispersant viscosity index improver, (C): (C-1) a specific amidocarboxylic acid and / or (C-2) a specific carboxylic acid, and (D): an ester oiliness improver. The composition is favorable as a lubricating oil composition and useful as a gear oil composition, a lubricating oil composition for paper machines or slide guides, a hydraulic oil, or the like.

Description

technical field [0001] The present invention relates to a novel lubricating composition for industrial machinery, specifically, it relates to various properties required according to the usage conditions of the industrial machinery while being excellent in lubricating properties such as wear resistance, extreme pressure, and friction characteristics An excellent lubricating oil composition, more specifically, a gear oil composition, a lubricating oil composition for a paper machine, a lubricating oil composition for sliding guide surfaces, and a hydraulic oil. In particular, the gear oil composition has excellent sludge resistance and extreme pressure properties, the lubricating oil composition for paper machine has excellent sludge resistance and extreme pressure properties, and the lubricating oil composition for sliding guide surfaces has excellent friction characteristics and anti-stick-slip properties. All are excellent, and the hydraulic oil is excellent in sludge inhibi...

Claims

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Application Information

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IPC IPC(8): C10M129/40C10M129/68C10M129/74C10M129/76C10M133/16C10M137/04C10M137/10C10M149/02C10M161/00C10N10/02C10N10/04C10N30/00C10N30/04C10N30/06C10N30/08C10N30/10C10N30/12C10N40/02C10N40/04C10N40/08
Inventor 泷川克也别府幸治三本信一秦正广秋山英治
Owner NIPPON OIL CO LTD
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