Texaco Inc.

Theodore E Nalesnik

Maria M Kapuscinski

Sheldon Herbstman

Robert T Biggs

Benjamin J Kaufman

Nicholas Benfaremo

Cyril A Migdal

Thomas F DeRosa

Christopher S Liu

James G Dadura

Thomas J Karol

Harry Chafetz

Raymond C Schlicht

Rosemary J Jennejahn

Thomas E Hayden

Tushar Kanti Bera

Kashmir S Virk

Carmen M Cusano

Nicholas Benfarmeo

Richard A Abramshe

Jie Cheng

Jacob Emert

Rolfe J Hartley

Multi-functional viscosity index improvers for lubricating oils containing an EPM or EPDM polymer onto which has been grafted an unsaturated functional monomer containing phenothiazine.

Multifunctional viscosity index improver containing phenothiazine

Multifunctional viscosity index improvers for lubricating oils containing an EPM or EPDM polymer onto which has been grafted with an unsaturated reactive monomer and thereafter reacted with amino alkylphenothiazine.

An additive composition comprising a graft and aminoheteroaromatic derivatized copolymer prepared from ethylene and at least one C.sub.3 -C.sub.10 alpha-monoolefin and, optionally, a comprising from about 15 to 80 mole percent of ethylene, from about 20 to 85 mole percent of said C.sub.3 -C.sub.10 alpha-monoolefin and from about 0 to 15 mole percent of said polyene having a number average molecular weight ranging from about 5000 to 500,000 which has been reacted with at least one olefinic carboxylic acid acylating agent to form one or more acylating reaction intermediates characterized by having a carboxylic acid acylating function within their structure and reacting said reaction intermediate with an aminoheteroaromatic compound and a lubricating oil composition containing same are provided.

Dispersant, VI improver, additive and lubricating oil composition

A method of retarding the darkening effect of a unreacted, excess antioxidant amine in a DAOCP comprising:

Method for retarding darkening of a dispersant-antioxidant olefin

An additive composition comprising a graft and derivatized block copolymer prepared from a styrene-ethylenebutylene-styrene characterized in that unsaturation in the styrene blocks is equal to or greater than 50 percent, and the ethylenebutylene block is hydrogenated leaving no more than 10 percent unsaturation which has been grafted with at least one olefinic carboxylic acid acylating agent and then derivatized with an aminoaromatic compound from the group consisting of aminopyridines, aminopyrazines and aminopyrimidines, and a lubricating oil composition containing same are provided.

Dispersant and VI improver additive and lubrication oil composition

An additive composition comprising a graft and derivatized copolymer prepared from ethylene and at least one C.sub.3 -C.sub.10 alpha-monoolefin and, optionally, a polyene selected from non-conjugated dienes and trienes comprising from about 15 to 80 mole percent of ethylene, from about 20 to 85 mole percent of said C.sub.3 -C.sub.10 alpha-monoolefin and from about 0 to 15 mole percent of said polyene having an average molecular weight ranging from about 5,500 to 500,000, which has been reacted with at least one olefinic carboxylic acid acylating agent to form one or more acylating reaction intermediates characterized by having a carboxylic acid acylating function within their structure and reacting said reaction intermediate with a N-(2-aminoalkyl)imidizolidone to form said graft derivatized copolymer, and a lubricating oil composition containing same are provided.

Viton seal compatible dispersant and lubricating oil composition

An additive composition comprising a graft and amine-derivatized polymer having an average molecular weight ranging from about 300 to 3500 which has been reacted with at least one olefinic carboxylic acid acylating agent to form one or more acylating reaction intermediates characterized by having a carboxylic acid acylating function within their structure and reacting said reaction intermediate with an amino-aromatic polyamine compound from the group consisting of an N-arylphenylenediamine, an aminothiazole, an aminocarbazole, an amino-indazolinone, an aminomercaptotriazole and an aminoperimidine to form said graft and amine-derivatized copolymer, and a lubricating oil composition containing same are provided.

Dispersant - anti-oxidant additive and lubricating oil composition

An additive, a lubricating oil composition which incorporates the additive, and a concentrate for a lubricating oil are disclosed. The additive includes (a) a halogenated copolymer prepared from ethylene, a C.sub.3 to C.sub.18 alpha-olefin, preferably a C.sub.3 to C.sub.8, or mixtures thereof, and at least one halogen, and (b) an amino-aromatic polyamine compound. Most preferably, the copolymer is prepared from ethylene, propylene and at least one polyene. The lubricating oil composition comprises a major amount of an oil of lubricating viscosity and a minor amount, effective to impart viscosity index improvement, dispersancy and antioxidant properties to the oil, of the prescribed additive. The concentrate comprises a diluent oil of lubricating oil viscosity and from about 1 to about 50 weight percent of the prescribed additive based on the total weight of the concentrate.

Multifunctional viscosity index improvers having dispersant and

An additive composition comprising a graft and amine-derivatized copolymer prepared from ethylene and at least one C.sub.3 to C.sub.10 alpha-monoolefin and, optionally, a polyene selected from non-conjugated dienes and trienes comprising from about 15 to 80 mole percent of ethylene, from about 20 to 85 mole percent of said C.sub.3 to C.sub.10 alpha-monoolefin and from about 0 to 15 mole percent of said polyene, the copolymer having a number average molecular weight ranging from about 5,500 to about 50,000 and having grafted thereon at least 1.8 molecules of a carboxylic acid acylating function per molecule of the copolymer and reacting the grafted copolymer with an amine substituted phenothiazine to form the grafted and amine-derivatized copolymer, and a lubricating oil composition containing same are provided.

Dispersant additive and lubricating oil composition containing same

An additive reaction product prepared by the steps comprising reacting a copolymer selected from the group consisting of ethylene copolymers prepared from ethylene and at least one C.sub.3 -C.sub.10 alpha-monoolefin and, optionally, a polyene selected fron non-conjugated dienes and trienes comprising from about 15 to 80 mole percent of ethylene, from about 20 to 85 mole percent of said C.sub.3 -C.sub.10 alpha-monoolefin, and from about 0 to 15 mole percent of said polyene and block copolymers prepared from styrene and a diene monomer having from 4 to 6 carbon atoms, said copolymer being a number average molecular weight ranging from about 25,000 to 300,000, with at least one olefinic carboxylic acid acylating agent to form one or more acylating reaction intermediates characterized by having a carboxylic acid acylating function with their structure; reacting said reaction intermediate in with an unsaturated hydrocarbyl amine to form an imide reaction product; and reacting said imide reaction product with a nitroso compound, and a lubricating oil compositon containing same.

Dispersant, VI improver and antioxidant additive, and lubricating oil

An additive composition comprising an amine-derivatized oxidized copolymer prepared from ethylene and at least one C.sub.3 to C.sub.10 alpha-monoolefin and, optionally, a polyene selected from non-conjugated dienes and trienes comprising from about 15 to 30 mole percent of ethylene, from about 20 to 85 mole percent of said C.sub.3 to C.sub.10 alpha-monoolefin and from about 0 to 15 mole percent of said polyene having a number average molecular weight ranging from about 5,000 to 500,000 which has been reacted with a formaldehyde compound and an amino-aromatic polyamine compound from the group consisting of an N-arylphenylenediamine, an aminocarbazoly, an aminomercaptotriazole, and an aminoperimidine to form said amine-derivatized oxidized copolymer and a lubricating oil composition containing same are provided.

Dispersant and antioxidant additive and lubricating oil composition

Multifunctional viscosity index improvers for lubricating oils containing olefin copolymers which have pendant groups derived from vinylbenzyl chloride and N-phenyl-p-phenylene diamine.

Multifunctional viscosity index improver containing units from

A lubricating oil composition having improved dispersancy and antioxidancy. The dispersant being prepared by coupling mono- and/or bis-alkenyl succinimides with an aldehyde and hydroxyaromatic amine. The resulting coupled succinimide is then acylated with an acylating agent to form a Mannich hydroxyaromatic amine coupled acylated mono and/or bis-alkenyl succinimide.

Acylated mannich base mono and/or bis-succinimide lubricating oil

Dispersant and antioxidant viscosity index improvers for lubricating oils containing an EPR or EPT polymer onto which has been graft polymerized with vinyl azlactone and thereafter reacted with N-phenyl-p-phenylene diamine.

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Wappingers Falls, NY, United States of America

Theodore E Nalesnik