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Use of a diester to improve the Anti-wear properties of a lubricant composition

A technology for lubricating compositions and uses, applied in the field of lubricating compositions, can solve problems such as damage to post-processing systems

Active Publication Date: 2021-07-23
TOTAL MARKETING SERVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] This is because sulfur, phosphorus and sulfated ash can damage the aftertreatment system installed on the vehicle

Method used

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  • Use of a diester to improve the Anti-wear properties of a lubricant composition
  • Use of a diester to improve the Anti-wear properties of a lubricant composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0193] Preparation of Lubricating Compositions Comprising the Diesters Claimed According to the Invention and Comparative Compositions

[0194] The lubricating compositions (I1 and I2) of the present invention using the diester of formula (I) and the lubricating compositions without the diester of formula (I) were formulated using the components and amounts (expressed in weight percent) indicated in Table 1 below. Comparative compositions (C1 and C2).

[0195] The lubricating composition is obtained by simply mixing the following components at room temperature:

[0196] - Base oils of group III (KV100=4.2 mm2 / s, KV40=19.1 mm2 / s, VI is 126), available for example from the company SK Lubricantes under the trade name 4 commercially available,

[0197] - Conventional additive package 1 comprising antiwear additives (bis[O,O-bis(2-ethylhexyl)] and bis(dithiophosphate)zinc, for example under the name 269R), antioxidants, friction modifiers, dispersants and detergents,

[019...

Embodiment 2

[0209] Evaluation of anti-wear performance

[0210] Evaluation method

[0211] This evaluation is based on a procedure according to standard ASTM D2670, which requires the use of a FALEX tribometer under the following test conditions.

[0212] - Specimen: FALEX steel

[0213] - Grinding time: 300s;

[0214] - Test duration: 180 minutes;

[0215] - Grinding load: 445N;

[0216] - Test load: 1335N;

[0217] - Speed: 290 rpm;

[0218] - room temperature.

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Abstract

The present invention relates to the use of a diester of the following formula (I): Ra-C(O)-O-([C(R)2]n-O)s-C(O)-Rb(I), as an additive to improve the anti-wear properties of a lubricant composition comprising one or more anti-wear additive(s).

Description

technical field [0001] The present invention relates to the field of lubricating compositions, especially lubricating compositions for vehicle engines, especially motor vehicle engines. The invention relates more particularly to the use of new compounds of diester type as additives in these lubricating compositions in order to improve their antiwear properties while advantageously reducing the amount of antiwear additives they contain. Background technique [0002] Lubricating compositions, also known as "lubricants," are commonly used in engines with the primary purpose of reducing friction between the various metal parts that move in the engine. They are moreover effective in preventing premature wear and even damage to these components, especially to their surfaces. [0003] For this purpose, a lubricating composition typically consists of a base oil, usually in combination with various additives, which are specifically designed to stimulate the lubricating properties of...

Claims

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Application Information

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IPC IPC(8): C10M129/74C10N30/06C10M105/38C10M141/10C10M169/04
CPCC10M105/38C10M129/74C10M141/10C10M169/04C10M2203/1025C10M2207/283C10M2207/2835C10M2209/084C10M2223/045C10N2020/071C10N2030/06C10N2030/08C10N2030/02C10N2040/25C10N2010/04C10N2020/02C10M2203/003C10M2205/0285
Inventor N·尚帕涅G·罗比诺
Owner TOTAL MARKETING SERVICES
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