Texaco Inc.

Ethyl Corporation

Dsm Copolymer, Inc.

Maria M Kapuscinski

Christopher S Liu

Larry D Grina

Theodore E Nalesnik

Robert T Biggs

Ronald E Jones

Benjamin J Kaufman

Nicholas Benfaremo

William P Hart

Rodney L Sung

Thomas F DeRosa

Rosemary J Jennejahn

Harry Chafetz

Raymond C Schlicht

Cyril A Migdal

Lee Ann Brugger

Richard A Abranshe

Multifunctional viscosity index improvers for lubricating oils based on a hydrocarbon polymer holding pendant functional groups containing phenothiazine, and pendant functional groups containing aromatic amine antioxidant.

Dispersant and antioxidant VI improvers based on olefin copolymers

A polymeric lubricant additive that behaves as a viscosity index improver and imparts enhanced anti-oxidancy, dispersancy, and anti-wear properties to said lubricant oil has been prepared. The polymeric substrate is a random co- or terpolymer of ethylene propylene and a third monomer; or a block terpolymer of styrene--ethylenebutylene--styrene where hydrogenation has removed aliphatic unsaturation. Ethylenically unsaturated carboxylic acid or acid anhydride is grafted to these aforementioned substrates and imidized with amino-thiadiazole of the formula: ##STR1## wherein R.sub.1 is H.sub.2 or a (C.sub.1 -C.sub.10) alkyl radical selected from the group consisting of a alkyl, alkenyl, alkoxyl, aralkyl, alkaryl, hydroxyalkyl and aminoalkyl, to produce said polymeric lubricant additive.

Process for making a polymeric lubricant additive designed to enhance

Lube oils of improved properties contain ethylene-propylene copolymer bearing moieties derived from the reaction product of allyl glycidyl ether and a heterocyclic amine such as N-(3-aminopropyl) morpholine.

Lubricating oil containing dispersant viscosity index improver

A method of producing a clear dispersant OCP VI improver. The method comprises admixing a polar modifier to a VI improver during the preparation process or to a final product at a sufficiently high temperature to produce the desired clear dispersant VI improver.

Modifiers for improving clarity of multifunctional VI improver oil

A polymeric lubricant additive that behaves as a viscosity index improver and imparts enhanced anti-oxidancy, dispersancy, and anti-wear properties to said lubricant oil has been prepared. The polymeric substrate is a random co- or terpolymer of ethylene propylene and a third monomer; or a block terpolymer of styrene-(ethylenebutylene)-styrene where hydrogenation has removed aliphatic unsaturation. Ethylenically unsaturated carboxylic acid or acid anhydride is grafted to these aforementioned substrates and imidized with amino-thiadiazole of the formula: ##STR1## wherein R.sub.1 is H.sub.2 or a (C.sub.1 -C.sub.10) alkyl radical selected from the group consisting of a alkyl, alkenyl, alkoxyl, aralkyl, alkaryl, hydroxyalkyl and aminoalkyl, to produce said polymeric lubricant additive.

Polymeric lubricant additive designed to enhance anti-wear,

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 with pendant thiazoline units.

Multifunction viscosity index improvers

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

Multifunctional viscosity index improvers based on polymers containing

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 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

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

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.

Dispersant-antioxidant viscosity index improver

A dispersant and viscosity index improver for lubricating oils containing an EPR or EPT polymer onto which has been free radically grafted an unsaturated urethane or unsaturated urea.

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Carmel, NY, United States of America

Maria M Kapuscinski