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Gear oil composition for automobile

A composition and gear oil technology, applied in the directions of lubricating compositions, petroleum industry, additives, etc., can solve the problems of unsatisfactory improvement of anti-wear ability, extreme pressure thermal oxidation stability, etc. Seizure load, good maintenance, improved antioxidant effect

Inactive Publication Date: 2011-03-30
SUZHOU SHIHAO BUILDING MATERIAL NEW TECH ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is that the improvement of the anti-wear ability, extreme pressure property and thermal oxidation stability of the gear oil for vehicles in the prior art is not ideal, and a new type of gear oil composition for vehicles is specially provided

Method used

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  • Gear oil composition for automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] This example is used to illustrate the gear oil disclosed in the present invention.

[0021] First prepare 946.2 parts by weight of SAE 80W / 90 viscosity-adjusted base oil, heat at 70-80°C and stir for 60-90 minutes, then add 20 parts by weight of octyl stearate (Shanghai Huayi Chemical Auxiliary Co., Ltd. Produced by the company), 8.5 parts by weight of sulfurized isobutylene (T321 produced by Nanjing Runyou Chemical Additive Co., Ltd.), 8 parts by weight of sulfurized olefin cottonseed oil (T405 produced by Jinzhou Kangtai Lubricating Oil Additive Co., Ltd.), 6 parts by weight of trimethyl phosphate Phenyl ester (T306 produced by Jinzhou Kangtai Lubricating Oil Additive Co., Ltd.), 5 parts by weight of zinc dialkyldithiophosphate (T202 produced by Jinzhou Kangtai Lubricating Oil Additive Co., Ltd.), 5 parts by weight of dinonyl naphthalene sulfonic acid Barium (T705 produced by Jinzhou Kangtai Lubricating Oil Additive Co., Ltd.), 10 parts by weight of ultra-basic calci...

Embodiment 2

[0023] This example is used to illustrate the gear oil disclosed in the present invention.

[0024] First prepare 928.3 parts by weight of SAE 75W viscosity-adjusting base oil, heat at 70-80°C and stir for 60-90 minutes, then add 23 parts by weight of octyl stearate, 9.2 parts by weight of isobutylene vulcanization, 8.4 parts by weight of Parts of sulfurized olefin cottonseed oil, 6.8 parts by weight of tricresyl phosphate, 6.8 parts by weight of zinc dialkyldithiophosphate, 5 parts by weight of barium dinonyl naphthalene sulfonate, 12 parts by weight of superbasic value sulfonic acid Calcium, 0.5 parts by weight of benzotriazole, and continue to heat and stir at 70-80°C for 90 minutes to prepare the high-load gear oil A2 provided by the invention that can meet the requirements of automatic transmissions. Wherein the mass ratio of sulfur to phosphorus in A2 is 18.

Embodiment 3

[0026] The preparation process is the same as in Example 1, except that 20 parts by weight of octyl stearate is replaced by 20 parts by weight of isooctyl palmitate (produced by Guangzhou Jiayi Chemical Co., Ltd.), to obtain gear oil composition A3 .

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Abstract

The invention discloses a gear oil composition for an automobile. The gear oil composition for the automobile comprises viscosity blend base oil, a sulfur-containing extreme pressure additive, a phosphorus-containing wear-resistant additive, an antirust additive, a metal passivator and a synthetic ester oiliness additive, wherein the synthetic ester oiliness additive may be one or more of trimethylolpropane trioleate, octyl stearate, butyl stearate, isooctyl stearate and isooctyl palmitate; and the synthetic ester oiliness additive accounts for 2 to 10 percent of the total weight of the gear oil composition. The gear oil has the advantages of high wear resistance, high maximum non-seizure load, high load-bearing capacity, high viscosity index, high low-temperature flowability, high lubricating property and the like, is suitable for the lubrication of an automobile manual gearbox and a rear drive axle gear and is also suitable for an automobile automatic gearbox.

Description

【Technical field】 [0001] The invention relates to a gear oil for vehicles, in particular to a lubricating oil composition for gears of manual gearboxes and rear drive axles. 【Background technique】 [0002] The gear oil required for the manual transmission and rear drive axle of automobiles is a product with a large quantity and a wide range of products. Wear resistance, shear stability, etc. [0003] Patent CN1209449 discloses a gear lubrication additive composition, including a certain amount of diluent, sulfur-containing extreme pressure additive, phosphorus-containing anti-wear additive, anti-rust additive, friction modifier, antioxidant or metal deactivator. In the existing gear oil technology, when selecting oily agents and extreme pressure antiwear agents, most of them use the traditional sulfur-phosphorus-chlorine-zinc system for mutual matching. Although the anti-wear ability of gears can be improved to a certain extent, the effect is not good. It is not ideal, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M163/00C10M129/70C10M135/34C10M159/08C10M137/04C10M137/10C10N40/04C10N30/02C10N30/06C10N30/10
Inventor 杨杰
Owner SUZHOU SHIHAO BUILDING MATERIAL NEW TECH ENG
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