Exxon Chemical Patents, Inc.

Infineum International Limited

Exxon Research and Engineering Company

Robert A Kleist

Antonio Gutierrez

Robert D Lundberg

Won R Song

Albert Rossi

Howard W Turner

Howard C Welborn, Jr

Ricardo A Bloch

Howard C Welborn, Deceased

Jacob I Emert

Stanley J Brois

Jack Ryer

Malcolm Waddoups

William M Davis

Jeremy Roger Spencer

Mark G Stevens

Sanjeev Sharma

Michael T Minotti

Robert D Lunberg

Robert D Lungberg

John G Hedin

Geraldo Barini

Jeremy R Spencer

The residual chlorine content of a polyolefin-substituted carboxylic acylating agent formed by a chlorine-assisted reaction of a polyolefin and an &agr;,&bgr;-unsaturated carboxylic reactant can be reduced by heating the polyolefin-substituted carboxylic acylating agent having a residual chlorine content in the presence of an &agr;,&bgr;-unsaturated carboxylic reactant, optionally in the further presence of a sulfonic acid. Residual chlorine content can be further reduced by using, in the reaction of the polyolefin &agr;,&bgr;-unsaturated carboxylic reactant, a high speed mixer provided with a dual pitch blade.

Polyalkene-substituted carboxylic acid compositions having reduced chlorine content

Low molecular weight Mannich base condensates of hydroxy aromatic compounds, an aldehyde; and an amine, wherein the combined number of substituent carbon atoms does not exceed 80. Such compounds are useful as soot dispersants in lubricating oils when used alone, or in combination with high molecular weight dispersants.

Hydroxy aromatic mannich base condensation products and the use thereof as soot dispersants in lubricating oil compositions

The present invention is directed to an oil-soluble lubricating oil additive comprising at least one terminally unsaturated ethylene/alpha-olefin/diene interpolymer of 300 to 20,000 number average molecular weight substituted with mono- or dicarboxylic acid producing moieties (preferably dicarboxylic acid or anhydride moieties), wherein the terminal unsaturation comprises terminal ethenylidene unsaturation. The mono- and dicarboxylic acid or anhydride substituted interpolymers of this invention are useful per se as additives to lubricating oils, and can also be reacted with a nucleophilic reagent, such s amines, alcohols, amino alcohols and reactive metal compounds, to form products which are also useful lubricating oil additives, e.g., as dispersants.

Ethylene .alpha.-olefin/diene interpolymer-substituted carboxylic acid

The present invention is directed to an oil-soluble lubricating oil additive comprising at least one terminally unsaturated ethylene/alpha-olefin/diene interpolymer of 300 to 20,000 number average molecular weight substituted with mono- or dicarboxylic acid producing moieties (preferably dicarboxylic acid or anhydride moieties), wherein the terminal unsaturation comprises terminal ethenylidene unsaturation. The mono- and dicarboxylic acid or anhydride substituted interpolymers of this invention are useful per se as additives to lubricating oils, and can also be reacted with a nucleophilic reagent, such as amines, alcohols, amino alcohols and reactive metal compounds, to form products which are also useful lubricating oil additives, e.g., as dispersants.

Ethylene alpha-olefin/diene interpolymer-substituted carboxylic acid

The present invention is directed to an oil-soluble fuel and lubricating oil additive comprising at least one terminally unsaturated ethylene alpha-olefin polymer of 300 to 20,000 number average molecular weight substituted with mono- or dicarboxylic acid producing moieties (preferably dicarboxylic acid or anhydride moieties), wherein the terminal unsaturation comprises terminal ethenylidene unsaturation. The mono- and dicarboxylic acid or anhydride substituted polymers of this invention are useful per se as additives to lubricating oils, and can also be reacted with a nucleophilic reagent, such as amines, alcohols, amino alcohols and reactive metal compounds, to form products which are also useful fuel and lubricating oil additives, e.g., as dispersants.

Ethylene alpha-olefin polymer substituted mono- and dicarboxylic acid

The present invention is directed to oil-soluble lubricating oil additives comprising Mannich Base condensates of an alkyl substituted hydroxy aromatic compound with formaldehyde and an amine, wherein the alkyl-moiety of the aromatic compounds is derived from a mixture comprising at least one ethylene alpha-olefin copolymer of 300 to 20,000 number average molecular weight, wherein at least about 30% of the polymer's chains contain terminal ethenylidene unsaturation and (ii) at least one polyalkene derived from at least one C.sub.2 to C.sub.20 alkene, the polyalkene having a number average molecular weight of at least about 900. The Mannich Base condensates of this invention are useful as dispersants.

Ethylene .alpha.-olefin copolymer substituted mannich base lubricant

The present invention is directed to oil-soluble lubricating oil additives comprising borated Mannich Base condensates of an alkyl substituted hydroxy aromatic compound with formaldehyde and an amine, wherein the alkyl-moiety of the aromatic compounds is derived from at least one ethylene alpha-olefin copolymer of 300 to 20,000 number average molecular weight, wherein at least about 30% of the polymer's chains contain terminal ethenylidene unsaturation. The borated Mannich Base condensates of this invention are useful as dispersants.

Borated ethylene alpha-olefin copolymer substituted Mannich base

Borated ethylene alpha-olefin polymer substituted mono- and dicarboxylic

The present invention is directed to oil-soluble lubricating oil additives comprising Mannich Base condensates of an alkyl substituted hydroxy aromatic compound with formaldehyde and an amine, wherein the alkyl-moiety of the aromatic compounds is derived from at least one ethylene alpha-olefin copolymer of 300 to 20,000 number average molecular weight, wherein at least about 30% of the polymer's chains contain terminal ethenylidene unsaturation. The Mannich Base condensates of this invention are useful as dispersants.

Ethylene alpha-olefin copolymer substituted hydroxy aromatic compounds

According to the present invention, improved dispersants are provided which comprise adducts of (A) polymer-substituted mono- and dicarboxylic acid or anhydrides and (B) bis(para-amino cyclohexyl) methane oligomers, wherein the reactants are contacted in a reaction zone in the substantial absence of polar organic solvents.

Ashless dispersants

The present invention is directed to an oil-soluble lubricating oil additive comprising at least one terminally unsaturated ethylene alpha-olefin polymer of 300 to 10,000 number average molecular weight substituted with mono- or dicarboxylic acid producing moieties (preferably dicarboxylic acid or anhydride moieties), wherein the terminal unsaturation comprises terminal ethenylidene unsaturation. The mono- and dicarboxylic acid or anhydride substituted polymers of this invention are useful per se as additives to lubricating oils, and can also be reacted with a nucleophilic reagent, such as amines, alcohols, amino alcohols and reactive metal compounds, to form products which are also useful lubricating oil additives, e.g., as dispersants.

Ethylene alpha-olefin polymer substituted mono-and dicarboxylic acid

The present invention is directed to an oil-soluble lubricating oil additive comprising at least one terminally unsaturated ethylene alpha-olefin polymer of 300 to 10,000 number average molecular weight substituted with thiocarboxylic acid producing moieties (preferably acid or anhydride moieties), wherein the terminal unsaturation comprises ethenylidene unsaturation. The thiocarboxylic acid or anhydride substituted polymers of this invention are useful per se as additives to lubricating oils, and can also be reacted with a nucleophilic reagent, such as amines, alcohols, amino alcohols and metal compounds, to form products which are also useful lubricating oil additives, e.g., as dispersants.

Growing community of inventors

Bayonne, NJ, United States of America

Robert A Kleist