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lubricating oil additive composition and method of making the same / Chevron Oronite Llc




Title: lubricating oil additive composition and method of making the same.
Abstract: An oil-soluble lubricating oil additive composition prepared by a process which comprises reacting a succinimide, succinamide or mixtures thereof with a first post-treating agent, thereby producing an initial post-treated product which is reacted with a second post-treating agent. ...


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USPTO Applicaton #: #20100160192
Inventors: William R. Ruhe, Jr.


The Patent Description & Claims data below is from USPTO Patent Application 20100160192, lubricating oil additive composition and method of making the same.

FIELD OF THE INVENTION

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The present invention is directed to an improved dispersant additive composition that is used in engine oils; and it is also directed to the process of making the same.

BACKGROUND

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OF THE INVENTION

It is known to employ nitrogen containing dispersants and/or detergents in the formulation of lubricating oil compositions. Many of the known dispersant/detergent compounds are based on the reaction of an alkenylsuccinic acid or anhydride with an amine or polyamine to produce an alkenylsuccinimide or an alkenyl succinamic acid as determined by selected conditions of reaction. One problem facing the lubricant manufacturer is dispersancy of particulate matter in internal combustion engines. Failure to have adequate particulate matter dispersancy may result in filter plugging, sludge accumulation, and oil thickening.

It has been discovered that the combination of certain aromatic anhydrides and ethylene post-treated dispersants provide improved dispersancy as shown in soot thickening bench tests and diesel engine fuel injector flow loss improvement tests.

DESCRIPTION OF THE RELATED ART

European Published Patent Application No. 0438848 discloses a lubricating oil containing a dispersant prepared by (i) reacting at least one polyamine with at least one acyclic hydrocarbyl substituted succinic acylating agent in which such acyclic hydrocarbyl substituent contains an average of at least 40 carbon atoms, such reaction being conducted using proportions such that the acylating agent is reacted with the polyamine in a mole ratio of from 1.05 to 2.85 moles per mole of polyamine, and (ii) reacting the product so formed with (a) at least one aliphatic vicinal dicarboxylic acid acylating agent containing 4 to 30 carbon atoms in the molecule and in which the two carboxyl groups are separated from each other by two aliphatic carbon atoms, or (b) an anhydride, acid halide, or ester of at least one such dicarboxylic acid acylating agent, or (c) a combination of (a) and (b), using in thereaction of (ii) proportions such that the mole ratio of such acylating agent is from 0.10 to 2.50 moles per mole of said polyamine with the proviso that the total mole ratio of the acylating agents in (i) and (ii) per mole of said polyamine is in the range of 2.40 to 4.50.

JP51130408 discloses a lubricating oil composition that is prepared by adding an effective amount of the reaction product of about 0.05-1 in the weight ratio of boron to nitrogen obtained by treating (a) aromatic polybasic carboxylic acid (phthalic acid, terephthalic acid, trimesic acid, trimellitic acid pyromellitic acid, etc.) and its anhydride, (b) alkenyl-succinic acid, or its anhydride, having alkenyl group jointed of molecular weight about 300-3000 and (c) polyalkylenepolyamine in the molar ratio of (a):(b):(c)=1:1-4:1-4 and treating then the resulting intermediate with boron.

Stuart et al., U.S. Pat. No. 3,287,271discloses lubricating oil compositions containing amine carboxylic acid products.

,LeSuer, U.S. Patent No. U.S. Pat. No. 3,374,174 discloses nitrogen-containing compositions obtained from the reaction of an amine with a high molecular weight carboxylic acid such as a monocarboxylic acid and an alkylene or arylene dicarboxylic acid.

Liston, U.S. Pat. No. 3,692,681 discloses terephthalic acid dispersed in a hydrocarbon medium containing highly hindered acylated alkylene polyamines.

Durand et al. U.S. Pat. No. 4,747,964 discloses additive compositions that may be either (1) the products obtained by reacting alkenylsuccinimides with aromatic dianhydrides, or (2) the products obtained by reacting alkenylsuccinimides with an anhydride or a dianhydride of mono- or polycarboxylic aliphatic, alicyclic or aromatic acid of low molecular weight, the obtained product being then reacted with at least one organic compound having several hydroxyl and/or amine groups. These dispersing additive compositions may be added to lubricating oils in a proportion, for example, from 0.1 to 20% by weight.

Clark et al., U.S. Pat. No. 6,255,258 discloses oil-soluble dispersant obtainable by reacting the reaction product of a polyamine and a long-chain hydrocarbyl-substituted dicarboxylic acid, anhydride or ester thereof with a polyanhydride, characterized in that the dispersant restricts the viscosity increase in an oil to below 8 Pa.s in the Haake rheology test defined herein at 2% w/w active matter and a shear rate of 0.26 s.sup.-1 Pa.s, and lubricating oil and fuel compositions and additive concentrates containing such a dispersant.

Degonia et al., U.S. Pat. No. 5,241,003 discloses succinimides, succinic esters, and succinic ester-amides are formed by (A) reacting (i) at least one substantially aliphatic polymer of at least one lower olefin, and (ii) an acidic reactant or a mixture of two or more acidic reactants represented by the general formula wherein R and R′ are independently —OH, —O-lower alkyl, a halogen atom, or taken together are a single oxygen atom; and (B) reacting an acylating agent with at least one alcohol (preferably a polyhydric alcohol) or amine (preferably a polyamine having at least one primary amino group).

Wollenberg et al., U.S. Pat. No. 4,612,132 discloses polyamino alkenyl or alkyl succinimides which contain carbamate functionalities which are useful as dispersants in lubricating oils, gasoline's, marine crankcase oils and hydraulic oils.

Wollenberg et al., U.S. Pat. No. 4,747,850 discloses polyamino alkenyl or alkyl succinimides which contain carbamate functionalities which are useful as dispersants in lubricating oils, gasolines, marine crankcase oils and hydraulic oils.

Harrison et al., U.S. Pat. No. 5,334,321 discloses alkenyl or alkyl succinimide additives which are the reaction product of a high molecular weight alkenyl- or alkyl-substituted succinic anhydride and a polyalkylene polyamine having an average of greater than 4 nitrogen atoms per mole, wherein the reaction product is post-treated with a cyclic carbonate, are compatible with fluorocarbon engine seals and, for concentration levels at which fluorocarbon seal compatibility is achieved, possess improved dispersancy and/or detergency properties when employed in lubricating oils and fuels,

Harrison et al., U.S. Pat. No. 5,356,552 discloses alkenyl or alkyl succinimide additives which are the reaction product of a high molecular weight alkenyl- or alkyl-substituted succinic anhydride and a polyalkylene polyamine having an average of greater than 4 nitrogen atoms per mole, wherein the reaction product is post-treated with a cyclic carbonate, are compatible with fluoroelastomer engine seals and, for concentration levels at which fluoroelastomer seal compatibility is achieved, possess improved dispersancy and/or detergency properties when employed in chlorine-free lubricating oils.

Harrison et al., U.S. Pat. No. 5,716,912 discloses a succinimide composition is prepared by reacting a mixture of an alkenyl or alkylsuccinic acid derivative, an unsaturated acidic reagent copolymer, and a polyamine under reactive conditions; then treating the reaction product with either a cyclic carbonate or a linear mono- or polycarbonate or boron compound under reactive conditions.

Harrison et al., U.S. Pat. No. 5,753,597 a polysuccinimide composition is prepared by reacting a mixture of a copolymer of a first unsaturated acidic reagent and a 1,1-disubstituted olefin; a copolymer of a second unsaturated acidic reagent and a 1-olefin, and a polyamine under reactive conditions; then treating the reaction product with either a cyclic carbonate or a linear mono- or polycarbonate or boron compound under reactive conditions.

Harrison et al., U.S. Pat. No. 5,849,676 discloses a succinimide composition is prepared by reacting a mixture of an alkenyl or alkylsuccinic acid derivative, an unsaturated acidic reagent copolymer, and a polyamine under reactive conditions.

Harrison et al., U.S. Pat. No. 6,358,892 discloses a succinimide composition is prepared by reacting a mixture of an alkenyl or alkylsuccinic acid derivative, an unsaturated acidic reagent copolymer, and a polyamine under reactive conditions; then treating the reaction product with either a cyclic carbonate or a linear mono- or polycarbonate or boron compound under reactive conditions.

Harrison et al., U.S. Pat. No. 6,451,920 discloses a process is provided for preparing a mixture of (1) a copolymer of a polyalkene and an unsaturated acidic reagent and (2) a polyalkenyl derivative of an unsaturated acidic reagent, said process comprising (a) copolymerizing (1) a polyalkene containing alkylvinylidene isomer and non-alkylvinylidene isomers and (2) an unsaturated acidic reagent under polymerization conditions in the presence of a free radical initiator; and (b) reacting the product of step (a) with an unsaturated acidic reagent at elevated temperature in the presence of a strong acid.

Harrison, U.S. Pat. No. 6,214,775 discloses a haze-free post-treated succinimide prepared by treating an alkenyl or alkyl succinimide with an oil-soluble, strong acid and contacting the treated succinimide with a cyclic carbonate to form the haze-free post-treated succinimide.

SUMMARY

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OF THE INVENTION

In its broadest embodiment, the present invention is directed to a lubricating oil additive composition prepared by the process which comprises the stops of:

(A) reacting a polyalkenyl succinic acid or a polyalkenyl succinic anhydride with at least one polyalkylene polyamine, having at least three nitrogen atoms, thereby producing a succinimide or succinamide or mixtures thereof;

(B) reacting the product of step (A) with a phthalic anhydride or naphthalic anhydride post-treating agent or mixtures thereof, thereby producing an initial post-treated succinimide or succinamide or mixtures thereof; and

(C) reacting the product of step (B) with a cyclic carbonate thereby producing a final post-treated succinimide or succinamide or mixtures thereof, wherein at least one basic nitrogen remains in the final post-treated succinimide or succinamide or mixtures thereof.

The present invention is also directed to a lubricating oil composition comprising a major amount of an oil of lubricating viscosity and a minor amount of a lubricating oil additive composition prepared by the process which comprises the steps of:

(A) reacting a polyalkenyl succinic acid or a polyalkenyl succinic anhydride with at least one polyalkylene polyamine, having at least three nitrogen atoms, thereby producing a succinimide or succinamide or mixtures thereof;

(B) reacting the product of step (A) with a phthalic anhydride or naphthalic anhydride post-treating agent or mixtures thereof, thereby producing an initial post-treated succinimide or succinamide or mixtures thereof; and

(C) reacting the product of step (B) with a cyclic carbonate thereby producing a final post-treated succinimide or succinamide or mixtures thereof, wherein at least one basic nitrogen remains in the final post-treated succinimide or succinamide or mixtures thereof.

The present invention is also directed to a method of making a lubricating oil additive composition which comprises the steps of:

(A) reacting a polyalkenyl succinic acid or a polyalkenyl succinic anhydride with at least one polyalkylene polyamine, having at least three nitrogen atoms, thereby producing a succinimide or succinamide or mixtures thereof;

(B) reacting the product of step (A) with a phthalic anhydride or naphthalic anhydride post-treating agent or mixtures thereof, thereby producing an initial post-treated succinimide or succinamide or mixtures thereof; and

(C) reacting the product of step (B) with a cyclic carbonate thereby producing a final post-treated succinimide or succinamide or mixtures thereof, wherein at least one basic nitrogen remains in the final post-treated succinimide or succinamide or mixtures thereof.

Accordingly, the present invention relates to multi-functional lubricating oil additives which are useful as dispersants in an internal combustion engine.




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Solid anti-friction devices, materials therefor, lubricant or separant compositions for moving solid surfaces, and miscellaneous mineral oil compositions
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stats Patent Info
Application #
US 20100160192 A1
Publish Date
06/24/2010
Document #
File Date
12/31/1969
USPTO Class
Other USPTO Classes
International Class
/
Drawings
0




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Chevron Oronite Llc


Browse recent Chevron Oronite Llc patents



Solid Anti-friction Devices, Materials Therefor, Lubricant Or Separant Compositions For Moving Solid Surfaces, And Miscellaneous Mineral Oil Compositions   Lubricants Or Separants For Moving Solid Surfaces And Miscellaneous Mineral Oil Compositions (e.g., Water Containing, Etc.)   Heterocyclic Ring Compound; A Heterocyclic Ring Is One Having As Ring Members Only Carbon And At Least One Hetero Atom Selected From Nitrogen And Chalcogen (i.e., Oxygen, Sulfur, Selenium, Or Tellurium)   The Hetero Ring Contains Five Members Including Nitrogen And Carbon (e.g., Polyvinylpyrrolidone, Etc.)   Plural Oxygens Double Bonded Directly To Ring Carbons Of The Hetero Ring Which Are Adjacent To The Ring Nitrogen  

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20100624|20100160192|lubricating oil additive composition and making the same|An oil-soluble lubricating oil additive composition prepared by a process which comprises reacting a succinimide, succinamide or mixtures thereof with a first post-treating agent, thereby producing an initial post-treated product which is reacted with a second post-treating agent. |Chevron-Oronite-Llc
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