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Combination of general gear oil

A technology of composition and gear oil, which is applied in the direction of lubricating composition and petroleum industry, etc., can solve the problems of relatively little research on the effect of additive compounding, and achieve the effects of improving thermal oxidation stability, reducing total consumption, and being convenient to use

Active Publication Date: 2009-06-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Early vehicle gear oils and industrial gear oils focused on the development of additive components, and there were relatively few studies on the compounding effect of various additives

Method used

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  • Combination of general gear oil
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Examples

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example 1

[0020] First formulate the base oil of the general purpose gear oil composition of the present invention. In a mixing tank with agitator, add 25% by weight of HVI100SN mineral oil, 75% by weight of HVI 120BS mineral oil, and add 1.0% by weight of pour point depressant polyalpha-olefin and 0.6% by weight of viscosity index improver polymethacrylate , stirred at 70-80° C. for 1-3 h to obtain the 80 wt / 90 base oil of the composition of the present invention. Then add 3.0% by weight of sulfurized isobutylene, 1.0% by weight of triphenyl thiophosphate, 0.03% by weight of benzotriazole, 0.2% by weight of phosphonate, 0.05% by weight of synthetic calcium sulfonate, 0.5% by weight Isooctyl acid phosphate amine salt. Continue to heat and stir for 1-3h, thus obtaining the general gear oil composition of the present invention. The results are shown in Table 1.

example 2

[0022] First formulate the base oil of the general purpose gear oil composition of the present invention. In the blending kettle with agitator, add polyalpha-olefin synthetic oil (40℃ kinematic viscosity 336mm 2 / s), and add 0.8% by weight viscosity index improver polymethacrylate, stir at 70-80°C for 1-3h, to obtain the N of the composition of the present invention 320 base oil. Then add 0.85% by weight of sulfurized isobutylene, 0.5% by weight of phosphorothioate double ester amine salt, 0.03% by weight of tolutriazole, 0.1% by weight of phosphonate, 0.03% by weight of petroleum calcium sulfonate, 0.1% by weight % isooctyl acid phosphate amine salt, and continue to heat and stir for 1-3h, thus obtaining the general gear oil composition of the present invention. The results are shown in Table 2.

example 3

[0024] First formulate the base oil of the general purpose gear oil composition of the present invention. In a mixing kettle with a stirrer, add 45% by weight of HVI350SN mineral oil, 55% by weight of poly-α-olefin synthetic oil (100°C kinematic viscosity 32.6mm 2 / s), and adding 0.8% by weight viscosity index improver polymethacrylate, stirring at 70-80°C for 1-3h, to obtain the 85% by weight / 90 base oil of the composition of the present invention. Then add 1.5% by weight of sulfurized isobutylene, 0.6% by weight of nitrogen-containing derivatives of sulfuric acid phosphoric acid, 0.04% by weight of thiadiazole polysulfide, 0.15% by weight of phosphonate, 0.13% by weight of isooctyl acid phosphate amine Salt. Continue to heat and stir for 1-3h, thus obtaining the general gear oil composition of the present invention. The results are shown in Table 3.

[0025] Table 1 Main properties of 80W / 90 GL-5 gear oil composition

[0026]

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Abstract

A universal oil composition for gear contains mineral lubricating oil or synthetic lubricating oil or their mixture, at least one viscosity index improver and / or pour depressor, at least one S-contained extreme-pressure agent, at least one P-contained antiwear agent, phosphate-type multi-effect agent, oil agent (1-hydroxyethylene-1, 1-biphosphonate), and at least one metallic deactivator and / or antirust agent.

Description

technical field [0001] The present invention relates to a lubricating oil composition, particularly a general purpose gear oil composition. technical background [0002] The vehicle gear oil required for the manual transmission and rear axle of vehicles (including cars and trucks) is a product with a large amount and a wide range of products, and it is required to have excellent extreme pressure and anti-wear properties, thermal oxidation stability, anti-corrosion Rust and anti-foam performance, need to add a variety of functional additives to meet the oil requirements. [0003] Early vehicle gear oils and industrial gear oils focused on the development of additive components, and there were relatively few studies on the compounding effect of various additives. Patent ZL 97112343.8 introduces a gear oil compounding agent, the corrosion inhibitor of which is composed of fatty acid ester amine salt and sulfonate, and uses boron-containing phosphoric acid ester as a component ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M145/14C10N40/04
Inventor 李勇李云鹏
Owner CHINA PETROLEUM & CHEM CORP
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