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Lubricating Composition Containing a Dispersant

a technology of dispersant and lubricating composition, which is applied in the preparation of carboxylic compounds, fuels, organic chemistry, etc., to achieve the effect of mitigating soot thickening

Inactive Publication Date: 2013-06-06
THE LUBRIZOL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a compound that can be used in a lubricant to prevent the lubricant from thickening with soot. This compound helps to keep the lubricant flowing smoothly through the engine and ensures it doesn't become too viscous.

Problems solved by technology

Whilst improvements in engine design and operation have contributed to reducing emissions, some engine design advances are believed to have generated other challenges for the lubricant.

Method used

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  • Lubricating Composition Containing a Dispersant
  • Lubricating Composition Containing a Dispersant
  • Lubricating Composition Containing a Dispersant

Examples

Experimental program
Comparison scheme
Effect test

example 1 (

Preparative Example 1 (EX1)

[0112]A 5 L 5 neck flask is charged with 1326.8 g of polyisobutylene (vinylidene content of 5-8 mol %, and number average molecular weight of about 2050) and 1044 g of hexane. A thermocouple, water condenser and two subsurface gas inlet tubes are connected to the flask. Prior to the gas inlet, two sinter gas filters, air trap and flow meter are connected. Prior to the flow meter an air trap is connected. After the condenser, a dry-ice tap, air trap, o-toluidine trap, water trap (500 mL) and caustic trap are connected. The contents of the flask are stirred for 2 hours. The flask is then heated to 65° C. and 58 g of chlorine is added over a period of 4 hours. The reaction is blown with nitrogen gas for 30 minutes, before cooling to ambient temperature. The flask is then heated to 130° C. over 4 hours to remove hexane under vacuum. The reaction yields 1293.5 g of product.

example 2 (

Preparative Example 2 (EX2)

[0113]979.4 g of the product of EX1 and 982.4 g of dodecane are charged into a 500 ml flask. The flask has a Friedrichs condenser attached and Tygon™ tubing from the condenser outlet to a caustic trap. The thermocouple is placed in a pocket to prevent corrosion and a PTFE stirrer is used. The contents of the flask are stirred for 30 minutes at 50° C. Trans-cinnamic acid (146.5 g) is then added at room temperature via a powder funnel. The resulting mixture is stirred (250 rpm) and heated to 90° C. under nitrogen. The mixture is then heated to 180° C. over 1 hour and held at 180° C. for 18 hours. The reaction is then vacuum stripped over 7 hours while increasing the temperature from 150° C. to 200° C., before cooling to ambient temperature.

example 3 (

Preparative Example 3 (EX3)

[0114]292.7 g of the product of EX1 and 250 g of dodecane are charged into a 1 L flask. The flask has a Friedrichs condenser attached and Tygon™ tubing from the condenser outlet to a caustic trap. The thermocouple is placed in a pocket to prevent corrosion and a PTFE stirrer is used. The contents of the flask are stirred for 30 minutes at 50° C. before cooling to ambient temperature. 32.5 g of phenylpropiolic acid is added in one portion. The resulting mixture is stirred (250 rpm) and heated to 90° C. under nitrogen. The mixture is then heated to 180° C. over 1.5 hour and held at 180° C. for 18 hours. The reaction is then vacuum stripped over 10 hours while increasing the temperature from 150° C. to 200° C., before cooling to ambient temperature.

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Abstract

The invention provides a lubricating composition containing a compound comprising the reaction product of a polyolefin, an ethylenically unsaturated aromatic acylating agent (or carboxylic reactant), and an amine, and an oil of lubricating viscosity. The invention further relates to the use of the lubricating composition in an internal combustion engine.

Description

FIELD OF INVENTION[0001]The invention provides a lubricating composition containing a dispersant and an oil of lubricating viscosity. The invention further relates to the use of the lubricating composition in an internal combustion engine.BACKGROUND OF THE INVENTION[0002]Engine manufacturers have focused on improving engine design in order to minimise emissions of particulates and pollutants, and improve cleanliness and fuel economy. One of the improvements in engine design is the use of exhaust gas recirculation (EGR) engines. Heavy duty diesel vehicles may use exhaust gas recirculation (EGR) engines in efforts to reduce environmental emissions. Whilst improvements in engine design and operation have contributed to reducing emissions, some engine design advances are believed to have generated other challenges for the lubricant. For example, EGR is believed to have led to increased formation and / or accumulation of soot and sludge. Among the consequences of recirculating the exhaust ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10M133/12
CPCC10M133/56C10M133/12C10M159/02C10M2205/022C10M2207/023C10M2207/028C10M2207/262C10M2215/064C10M2215/28C10M2217/06C10M2219/046C10M2219/106C10M2223/045C10N2210/01C10N2210/02C10N2230/04C10N2230/40C10N2230/45C10N2230/52C10N2240/10C10N2240/101C10N2240/102C10N2240/103C10N2240/104C10N2240/105C10M149/02C10M2205/024C10M2209/084C10N2260/09C10N2260/10C10N2030/04C10N2030/40C10N2030/45C10N2030/52C10N2010/02C10N2040/251C10N2040/252C10N2040/253C10N2040/255C10N2040/26C10N2040/25C10N2010/04C10N2060/10C10N2060/09C10M161/00C10M133/44C10M159/12C10M163/00C10M2215/223C10N2030/02
Inventor GIESELMAN, MATTHEW D.JONES, JOANNE L.EVELAND, RENEE A.MOSIER, PATRICK E.ELLYATT, WILLIAM
Owner THE LUBRIZOL CORP