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Additive composition

a technology of additive composition and composition, applied in the direction of lubricant composition, organic chemistry, fuel, etc., can solve the problems of increasing the downtime of the vehicle, increasing the wear of the lubricated engine components, and the inability to retain the basicity of the lubricant composition throughout its life, so as to improve the drain interval of engine oil

Inactive Publication Date: 2007-01-04
AFTON CHEMICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a new release additive composition that includes an overbased detergent in solid or semi-solid form. This composition can be added to a lubricant composition to improve the drain interval of engine oil. The technical effect of this invention is to provide a more effective and efficient additive composition for improving the performance of engine oil.

Problems solved by technology

Such by-products lead to the formation of high temperature deposits, low temperature sludge formation and corrosion of various engine parts which ultimately leads to increased wear of lubricated engine components.
However, the ability to retain the basicity of the lubricant composition throughout its life is a problem.
Failure to maintain oil's basicity can dramatically increase a vehicle's downtime, for example by requiring more frequent oil changes than the recommended 20,000 or 30,000 miles, or dramatically shorten an engine's life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

Nominal 5 wt % Grafted E-P Rubber Dissolved in 300 TBN Sulfonate

[0037] Into a reaction flask equipped with a condenser, thermocouple, thermometer, gas inlet, and stirrer was added 500 gms of a 300 TBN sulfonate, H-611 manufactured by Afton Chemical (Richmond, Va.). The reagent was blanketed with nitrogen. The reaction was heated to 135° C. With vigorous stirring, 25 gms of an ethylene-propylene copolymer grafted with 1.99 wt % maleic anhydride, PA-1275 manufactured by DSM for Afton Chemical, was added to the reaction. The reaction was stirred for 6 hours or until the rubber was completely dissolved. Analyticals: TBN=294, Product exists as a semi-solid at room temperature.

example 2

Nominal 7.5 wt % Grafted E-P Rubber Dissolved in 300 TBN Sulfonate

[0038] Into a reaction flask equipped with a condenser, thermocouple, thermometer, gas inlet, and stirrer was added 500 gms of a 300 TBN sulfonate, H-611 manufactured by Afton Chemical (Richmond, Va.). The reagent was blanketed with nitrogen. The reaction was heated to 135° C. With vigorous stirring, 37.5 gms of an ethylene-propylene copolymer grafted with 1.99 wt % maleic anhydride, PA-1275 manufactured by DSM for Afton Chemical, was added to the reaction. The reaction was stirred for 6 hours or until the rubber was completely dissolved. Analyticals: TBN=290, Product solidified on cooling.

example 3

Nominal 10 wt % Grafted E-P Rubber Dissolved in 300 TBN Sulfonate

[0039] Into a reaction flask equipped with a condenser, thermocouple, thermometer, gas inlet, and stirrer was added 500 gms of a 300 TBN sulfonate, H-611 manufactured by Afton Chemical (Richmond, Va.). The reagent was blanketed with nitrogen. The reaction was heated to 135° C. With vigorous stirring, 50 gms of an ethylene-propylene copolymer grafted with 1.99 wt % maleic anhydride, PA-1275 manufactured by DSM for Afton Chemical, was added to the reaction. The reaction was stirred for 6 hours or until the rubber was completely dissolved. Analyticals: TBN=284, Product solidified on cooling.

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Abstract

A release additive composition including at least one overbased detergent present in a form chosen from a solid and a semi-solid is disclosed. Also disclosed is a lubrication system and a method of improving the drain interval of oil.

Description

DESCRIPTION OF THE DISCLOSURE [0001] 1. Field of the Disclosure [0002] The present disclosure relates to a release additive composition comprising at least one overbased detergent present in a form chosen from a solid and a semi-solid. [0003] 2. Background of the Disclosure [0004] During the combustion process in internal combustion engines, mineral and organic acidic by-products are produced. Concurrently, other acidic products can be generated by the degradation of lubricants used in internal combustion engines. Such by-products lead to the formation of high temperature deposits, low temperature sludge formation and corrosion of various engine parts which ultimately leads to increased wear of lubricated engine components. Basic substances are typically added to lubricants to neutralize the acidic products in order to break the cycle of sludge and high temperature deposit formation and accelerated wear of engine parts. [0005] Overbased detergents are generally salts or complexes ha...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10M159/20
CPCC10M141/02C10N2250/08C10M159/20C10M159/22C10M159/24C10M169/042C10M169/047C10M171/00C10M175/0091C10M2203/003C10M2203/1006C10M2205/00C10M2205/022C10M2205/024C10M2207/026C10M2207/028C10M2207/26C10M2207/262C10M2207/401C10M2209/084C10M2209/086C10M2219/046C10N2230/72C10N2240/10C10M141/08C10N2030/72C10N2040/25C10N2050/08
Inventor MATHUR, NARESH C.ESCHE, CARL K. JR.PASSUT, CHARLES A.
Owner AFTON CHEMICAL