Gear oil composition

A technology of composition and gear oil, applied in the directions of lubricating composition, petroleum industry, additives, etc., can solve problems such as reduction

Active Publication Date: 2014-04-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the previous formula, although the ph

Method used

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Examples

Experimental program
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Example Embodiment

[0075] Preparation of organothiophosphonic acid A

[0076] Add 1000 grams of polyisobutylene with a number average molecular weight of 1000 in a three-necked flask equipped with electric stirring, and add P 2 S 5 168g, gradually heating up from room temperature to 210°C, heating rate at 30°C / hour, constant temperature reaction at 210°C for 12 hours, at this time the material gradually changes from colorless to brown, and 8.5g of water vapor is introduced for reaction and post-treatment . The obtained polyisobutylene thiophosphonic acid has a sulfur content of 5.2% and a phosphorus content of 2.2%, which is referred to as organothiophosphonic acid A.

[0077] Preparation of organothiophosphonic acid B

[0078] Add 1,000 grams of polyisobutylene with a number average molecular weight of 2300 to a three-necked flask equipped with electric stirring, and add P 2 S 5 158 grams, gradually warmed from room temperature to 225°C, heating rate 30°C / hour, constant temperature reaction at 225°...

Example Embodiment

[0079] Example 1

[0080] In Example 1, the molar ratio of the raw material organothiophosphonic acid A to the alkyl salicylic acid was 1:1.5, and the saponification reaction was performed by adding the raw materials at once.

[0081] Add 60 grams of organothiophosphonic acid A (molecular weight = 1112, 0.054 mol) and 62.72 grams (0.081 mol) of alkyl salicylic acid to a 500ml three-necked flask equipped with a temperature control system and electric stirring, and then add 120ml of No. 200 solvent gasoline. Stir for 5 minutes, then add 8.9 grams of calcium oxide (0.159mol), add 5 grams of water (0.278mol), 2.2 grams of 98% concentrated sulfuric acid, and then increase the temperature to 95°C for 6.5 hours of reaction. At this time, the material turns into a brown liquid. Add 85 grams of 150SN diluent oil, then distill the water, cool the material to 50°C, centrifuge for 30 minutes on a centrifuge with a rotation speed of 2000 rpm, remove the residue and distill to obtain a low-alkal...

Example Embodiment

[0082] Example 2

[0083] In Example 2, the molar ratio of the raw material organothiophosphonic acid A to the alkyl salicylic acid was 1:1.5, and the saponification reaction was carried out by adding the raw materials twice.

[0084] In a 500ml three-necked flask equipped with a temperature control system and electric stirring, add 60 grams of organothiophosphonic acid A (molecular weight 1112, 0.054mol), then add 120ml of No. 200 solvent gasoline, stir for 5 minutes, add 4.6 grams of calcium oxide (0.082 mol), add 3 grams of water (0.17 mol), stir for 25 minutes, heat up to 95°C and react for 2 hours, at which time the material turns into a brown liquid. Then add 62.72 grams (0.081 mol) of alkyl salicylic acid and react for 15 minutes, add 4.3 grams of calcium oxide (0.076 mol), 2 grams of water (0.111 mol), 2.2 grams of 98% concentrated sulfuric acid, and control the reaction temperature to 95°C. After 3.5 hours of reaction, add 85 grams of 150SN diluent oil, then distill water...

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Abstract

The invention provides a gear oil composition which comprises the following main components: (A) a low-alkali detergent with the mass accounting for 0.1%-2.0% of the total mass of the composition, (B) a sulfur-containing extreme-pressure anti-wear agent with the mass accounting for 1.0%-4.0% of the total mass of the composition, (C) an antioxidant with the mass accounting for 0.2%-2.0% of the total mass of the composition, (D) a ZDDP (zinc dialkyl dithiophosphate) oxidation and corrosion inhibitor with the mass accounting for 0.05%-1.0% of the total mass of the composition, (E) an oiliness agent with the mass accounting for 0.2%-1.2% of the total mass of the composition and (F) lubricating base oil, wherein a preparation method of the low-alkali detergent comprises the following steps: producing a saponification reaction of organic sulfur phosphonic acid, alkali metal and/or alkaline-earth metal oxide, water and alkyl salicylic acid with an inorganic acid and/or aryl carboxylic acid accelerant at the same time or successively, and collecting products. The gear oil composition is low in additive dosage and phosphorus content, relatively low in corrosivity, and relatively good in extreme pressure property and wear resistance, is a lubricating oil composition with excellent performance, and meets the requirements of low emission and environmental friendliness of lubricating oil.

Description

technical field [0001] The invention relates to a gear oil composition, in particular to a vehicle gear oil suitable for high-speed impact load, high-speed low-torque and low-speed high-torque working conditions. Background technique [0002] The transmission and steering mechanisms of automobiles, such as transmissions, steering gears, and rear axle gearbox transmissions, all require gear oil. The function of vehicle gear oil is to reduce the wear of gear transmission parts, reduce the power loss caused by friction, cool and dissipate heat, prevent corrosion and rust of gear parts, and reduce noise, vibration and impact between gears. A vehicle gear oil with excellent performance should have good lubricity and extreme pressure and anti-wear properties, good low temperature and viscosity-temperature properties, good thermal oxidation stability and rust resistance. [0003] Therefore, in order to meet the above requirements when developing vehicle gear oil, it should be cons...

Claims

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Application Information

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IPC IPC(8): C10M141/10C10M137/14C10M129/54C10N30/04C10N40/04C10N30/06C10N30/12
Inventor 刘依农段庆华张耀
Owner CHINA PETROLEUM & CHEM CORP
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