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Extreme pressure antiwear agent and preparation method thereof and lubricating oil combination

A technology of lubricating oil composition and extreme pressure antiwear agent, which is applied in the direction of lubricating composition, additives, petroleum industry, etc., can solve the problems of poor oil solubility and dark color of polarized antiwear agents, and achieve improved antiwear performance and Oxygen resistance, extreme pressure performance improvement, good anti-wear effect

Active Publication Date: 2012-12-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages of poor oil solubility and dark color of polarized antiwear agents caused by the increase of sulfur content in the vulcanization process of vegetable oil in the prior art, and provide a kind of oil solubility that is good, and has good extreme pressure performance, antiwear performance and antiwear performance. Oxidative extreme pressure antiwear agent, preparation method thereof, and lubricating oil composition containing the extreme pressure antiwear agent

Method used

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  • Extreme pressure antiwear agent and preparation method thereof and lubricating oil combination
  • Extreme pressure antiwear agent and preparation method thereof and lubricating oil combination
  • Extreme pressure antiwear agent and preparation method thereof and lubricating oil combination

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preparation example Construction

[0036] The preparation method of the extreme pressure antiwear agent also provided by the present invention comprises reacting fatty acid glycerides with phosphorus pentasulfide to obtain a sulfuric acid product; reacting the obtained phosphorus sulfuric acid product with zinc oxide and / or zinc hydroxide to obtain zinc sulfuric acid salt; Then, in the presence of sulfur, the resulting zinc thiophosphate is co-sulfurized with olefins, wherein the fatty acid glycerides are compounds represented by formula (7), formula (8), formula (9) and formula (10) One or more of:

[0037]

[0038] Formula (7) Formula (8)

[0039]

[0040] Formula (9) Formula (10)

[0041] where R 7 , R 8 , R 9 , R 10 , R 11 and R 12 Each is an alkyl or alkenyl group with 8-24 carbon atoms.

[0042] The reaction temperature of the fatty acid glyceride and phosphorus pentasulfide can be 20-120°C, preferably 60-90°C, the reaction time can be 1-8 hours, preferably 1.5-3 hours, an...

Embodiment 1

[0060] This example is used to illustrate the preparation of the extreme pressure antiwear agent of the present invention.

[0061] (1) Add 500 g of cottonseed oil, 300 g of glycerin, and 4 g of CaO into a 1000 ml three-neck flask, start stirring, raise the temperature to 200°C, and keep the temperature for 2 hours. Then cool down to 60°C, separate the precipitated glycerol, add 1mol / L hydrochloric acid to make the system acidic (pH value = 4), wash with water 3 times (each time with 300 ml of deionized water), and remove free water with anhydrous sodium sulfate Afterwards, heat preservation in an oven at 115° C. for 3 hours. Then add 60 g P 2 S 5 , after reacting at 60 °C for 2 h, the excess P was filtered off 2 S 5 . 30 g of ZnO was added to the filtrate, the temperature was raised to 80° C. and reacted for 4 hours, and the precipitate was filtered off to obtain zinc thiophosphate.

[0062] (2) 100 grams of zinc thiophosphate prepared in step (1) and 30 grams of 1-hexa...

Embodiment 2

[0064] This example is used to illustrate the preparation of the extreme pressure antiwear agent of the present invention.

[0065] (1) Add 500 grams of soybean oil, 180 grams of glycerin, and 4 grams of NaOH into a 1000 ml three-necked flask, start stirring, raise the temperature to 220°C, and keep the temperature for 4 hours. Then cool down to 60°C, separate the precipitated glycerol, add 1mol / L hydrochloric acid to make the system acidic (pH value = 4), wash with water 3 times (each time with 300 ml of deionized water), and remove free water with anhydrous sodium sulfate Afterwards, heat preservation in an oven at 115° C. for 3 hours. Then add 80 grams of P 2 S 5 , after reacting at 70 °C for 2 h, the excess P was filtered off 2 S 5 . 35 g of ZnO was added to the filtrate, the temperature was raised to 80° C. and reacted for 4 hours, and the precipitate was filtered off to obtain zinc thiophosphate.

[0066] (2) Add 100 grams of zinc thiophosphate prepared in step (1)...

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Abstract

The invention relates to an extreme pressure antiwear agent which is characterized by being a product by the joint sulphidation of thio-phosphate zinc and alkene; and the thio-phosphate zinc is compound denoted by a formula (1). The invention further provides a preparation method of the extreme pressure antiwear agent, comprising the following steps of: reacting fatty glyceride with phosphorus pentasulfite to obtain a thio-phosphate product; reacting the obtained thio-phosphate product with zinc oxide and / or zinc hydroxide to obtain the thio-phosphate zinc; and jointly sulphidizing the obtained thio-phosphate zinc and the alkene in the presence of sulfur. The invention further provides a lubricating oil combination containing the extreme pressure antiwear agent.

Description

technical field [0001] The invention relates to an extreme pressure antiwear agent, a preparation method thereof and a lubricating oil composition containing the extreme pressure antiwear agent. Background technique [0002] Lubricating oil works between two mechanical parts that are in relative motion and contact, and protect the moving parts from or less damage by forming a thin film. Lubricating oil consists of two parts: base oil and additives. Extreme pressure antiwear agents and friction modifiers are commonly used lubricant additives. When the two types of additives are added to the common base oil and used between moving parts, the friction modifier can significantly reduce the friction coefficient of the contact surface in terms of physical properties, and the extreme pressure anti-wear agent can only slightly or not reduce the friction of the contact surface Coefficient of friction, this coefficient of friction is obtained under low motion intensity, at this time...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M137/10C10N30/06
Inventor 段庆华冯亮
Owner CHINA PETROLEUM & CHEM CORP
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