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Basic ashless additives and lubricating compositions containing same

A technology of lubricant composition and lubricating viscosity, which is applied in the preparation of lubricating compositions, additives, organic compounds, etc., and can solve problems such as poor durability

Active Publication Date: 2022-02-18
THE LUBRIZOL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While the disclosed gamma-amino esters can titrate ASTM D4739, they are less persistent in the oil life cycle where shorter drain intervals are required

Method used

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  • Basic ashless additives and lubricating compositions containing same
  • Basic ashless additives and lubricating compositions containing same
  • Basic ashless additives and lubricating compositions containing same

Examples

Experimental program
Comparison scheme
Effect test

example A

[0143] Example A (comparison)

[0144] Equipped with overhead stirrer, thermocouple, N 2 Ethanol (1000 ml) was added to a 2 L round bottom flask with an inlet and a water-cooled condenser, followed by α-methylbenzylamine (131.3 g), and the mixture was stirred. Ethyl acrylate (108.5 g) was added thereto over a period of 4 hours. The reaction was allowed to exotherm. The reaction mixture was then stirred for an additional 3 hours and then left to stand overnight. The reaction mixture was then concentrated under reduced pressure to remove ethanol. The resulting liquid was then vacuum stripped at 110° C. at a pressure of 0 to 20 mbar. This yielded 226.6 g of ethyl 3-((1-phenylethyl)amino)propanoate.

example B

[0145] Example B (comparison)

[0146] Equipped with overhead stirrer, thermocouple, N 2 Acetonitrile (1500ml), α-methylbenzylamine (100g), potassium carbonate (250.9g), and potassium iodide (24.7g) were added to the inlet and 3L jacketed vessel of the water-cooled condenser. To the stirred mixture was added ethyl chloroacetate (197.1 g) over a period of 1 hour and the reaction was stirred at room temperature for 2 hours. The reaction was heated to 50°C for 5 hours, then heated to 70°C and stirred for 7 hours. The reaction mixture was cooled to room temperature and filtered. The filtrate was concentrated under reduced pressure and filtered again. This yielded 188 g of diethyl 2,2'-((1-phenylethyl)azadiyl)diacetate.

example C

[0148] N-Benzylglycine ethyl ester was purchased commercially from Sigma-Aldrich, Inc.

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PUM

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Abstract

The disclosed technology relates to a lubricating composition comprising an oil of lubricating viscosity and an ashless basic amine additive selected from a N-aralkyl [alpha]-carbonyl functional amine. The basic amine additives used in the lubricating oils of the disclosed technology impart basicity measured as total base number (TBN) without adding sulfated ash. Lubricating oils containing the basic amine additives of the disclosed technology simultaneously achieve seal compatibility, deposit, and corrosion control.

Description

technical field [0001] The disclosed technology relates to additives for lubricating oil compositions, lubricating oils containing the additives, and methods for lubricating engines. The additives used in the lubricating oils of the disclosed technology impart alkalinity measured in Total Base Number (TBN) without the addition of sulfated ash, phosphorus and sulfur. These additives reduce crankcase corrosion and have improved compatibility with fluoroelastomer seals. Background technique [0002] Lubricating oil compositions for lubricating internal combustion engines contain mostly base oils of lubricating viscosity and various lubricating oil additives to improve the properties of the oil. Lubricant additives are used to improve detergency, reduce engine wear, provide stability against heat and oxidation, inhibit corrosion and increase engine efficiency by reducing friction. Internal combustion engines produce acidic and pro-oxidant by-products due to incomplete combusti...

Claims

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Application Information

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IPC IPC(8): C10M167/00C10M133/06C07C227/08C07C229/12C10N40/25C10N30/12
CPCC10M167/00C10M133/06C07C227/08C10M2215/04C10M2215/28C10M2219/046C10M2219/089C10M2207/144C10M2223/045C10M2205/022C10M2205/024C10M2219/022C10M2215/064C10M2215/06C10N2040/25C10N2030/12C10N2030/36C07C229/12C10N2060/14C10N2010/04C10M2203/1025C10N2030/52C10M2207/262C10M2207/289C10N2030/42C10N2030/45C10M2215/08C10M133/16C10N2020/02C10N2010/02C10M2217/06C10N2030/43C10M169/04C10M2203/003C10M2215/26C10N2030/04C10N2040/04
Inventor D·J·萨科曼多W·R·S·巴顿A·斯通利张琰湜E·E·德尔布里奇
Owner THE LUBRIZOL CORP