Friction improver, preparation method and lubricating oil composition thereof

A technology of lubricating oil composition and friction modifier, applied in lubricating composition, additive, petroleum industry, etc., can solve the problems of dark color, poor compound effect of friction modifier and ZDDP, etc., and achieve the effect of expanding use

Active Publication Date: 2010-06-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of poor compounding effect and deep color of friction modifier and ZDDP in the prior art, and provide a light-colored friction modifier with good anti-wear performance and compounding effect with ZDDP and its preparation method and lubricating oil compositions containing the friction modifier

Method used

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  • Friction improver, preparation method and lubricating oil composition thereof
  • Friction improver, preparation method and lubricating oil composition thereof
  • Friction improver, preparation method and lubricating oil composition thereof

Examples

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preparation example Construction

[0031] The preparation method of the friction modifier provided by the present invention comprises reacting fatty acid glycerides with phosphorus pentasulfide to obtain sulfuric acid products; then reacting the obtained phosphorus sulfuric acid products with zinc oxide and / or zinc hydroxide, wherein the fatty acid glycerides are One or more of the compounds shown in formula (7), formula (8), formula (9) and formula (10):

[0032]

[0033] Formula (7) Formula (8)

[0034]

[0035] Formula (9) Formula (10)

[0036] where R 7 , R 8 , R 9 , R 10 , R 11 and R 12 Each may be an alkyl group or an alkenyl group having 8 to 24 carbon atoms.

[0037] Preferably, R 7 , R 8 , R 9 , R 10 , R 11 and R 12 Each is an alkyl or alkenyl group with 12-18 carbon atoms.

[0038] The reaction temperature of the fatty acid glyceride and phosphorus pentasulfide can be 20-120° C., the reaction time can be 1-8 hours, and the weight ratio of phosphorus pentasulfide to fatty acid glyce...

Embodiment 1

[0054] This example is used to illustrate the preparation of the friction modifier of the present invention.

[0055] Add 500 grams of cottonseed oil, 300 grams of glycerin, and 4 grams 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 lower the temperature to 60°C, separate and remove the precipitated glycerol, add 1mol / L hydrochloric acid to make the system acidic (pH value = 4), wash 3 times with water (each time with 300 ml of deionized water), and remove it with anhydrous sodium sulfate. After freeing moisture, keep it 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. for 4 hours, and the precipitate was filtered off to obtain the target product, which was designated as A1. The zinc content of the product measured by the ICP method i...

Embodiment 2

[0057] This example is used to illustrate the preparation of the friction modifier of the present invention.

[0058] Add 500 grams of soybean oil, 180 grams of glycerin, and 4 grams of NaOH into a 1000-ml three-neck 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 . Add 35 g of ZnO to the filtrate, raise the temperature to 80° C. and react for 4 hours, and filter off the precipitate to obtain the target product, which is designated as A2. The zinc content of the product measured by the ICP method inductively coupled pl...

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Abstract

The invention provides a friction improver which is the compound represented by the formula (1).The invention also provides a preparation method of the friction improver, which comprises the following steps of: reacting fatty glyceride with phosphorus pentasulfide to obtain a sulfur phosphoric acid product; and reacting the sulfur phosphoric acid product with zinc oxide and/or zinc hydroxide. The invention also provides a lubricating oil composition containing the friction improver. The color of the friction improver is similar to that of the original vegetable oil, thereby solving the problem in color of T405, and the tribological feature of the friction improver is not inferior to or partially superior to that of T405.The friction improver also solves the problem that T405 can not be compounded with ZDDP, thereby widening the application range.

Description

technical field [0001] The invention relates to a friction modifier, a preparation method thereof and a lubricating oil composition containing the friction modifier. 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. Lubricants contain base oils and additives. Zinc dialkyl dithiophosphate (ZDDP) is one of the most commonly used lubricating oil additives, it has anti-oxidation, anti-corrosion and anti-wear properties. Friction modifier is also a lubricant additive. When a friction modifier is added to a common base oil and used between moving parts, the friction modifier can significantly reduce the friction coefficient of the contact surface from a physical point of view. ZDDP and friction modifiers often need to be compounded as additives for lubricating oils. [0003] Vulcanized whale oil is a versatile friction modifier develo...

Claims

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Application Information

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