The Lubrizol Corporation

Jack C Kelley

Melody Wilk

William D Abraham

Paul E Adams

Patrick E Mosier

Matthew D Gieselman

Ewan E Delbridge

Haihu Qin

John Kent Pudelski

James D Burrington

John J Mullay

Mark C Davies

Jonathan S Vilardo

Ewa A Bardasz

Marina Baum

Michael J Covitch

Brent R Dohner

William Bricker Chamberlin, Iii

David Price

Daniel J Knapton

Chor Huang

Craig J Jones

Frank V Zalar

Thomas S Derevjanik

Frank M Van Lier

David A McCaughey

David B Skursha

Saleem Al-Ahmad

Lewis A Williams

Melody A Wilk

Ying Wang

William B Chamberlin

A lubricant composition of an oil of lubricating viscosity, an ashless condensation reaction product of an olefin polymer, having a number average molecular weight of 2,000 to 70,000, comprising carboxylic acid or equivalent functionality grafted onto the polymer backbone, with a monoamine or a polyamine often having a single primary amino group; a succinimide dispersant; and an overbased metal detergent, in an amount such that the total base number of the lubricant composition is less than 6.5, exhibits good sludge prevention performance in a gasoline engine.

Nitrogen-functionalized olefin polymers for engine lubricants

The disclosed technology relates to additive packages for lubricating compositions in diesel and gasoline powered vehicles. In particular, the disclosed technology provides an additive package that can be added to a lubricating composition with oil of lubricating viscosity to improve at least one of (A) piston deposit, (B) piston cleanliness, (C) soot induced viscosity thickening, and (D) oxidation induced viscosity thickening.

Lubricant additive booster system

The disclosed invention relates to a composition comprising an oil of lubricating viscosity, a hydrogenated copolymer of an olefin block and vinyl aromatic block, wherein the polymer is optionally functionalized, and a star polymer. Use of the composition as a lubricating composition is disclosed.

Polymer blends useful as viscosity modifiers

The present invention relates to a controlled release gel with an ashless component and defined ash-producing component. Further, the invention relates to the use of a controlled release gel with a controlled level of ash-producing (i.e., metal) components for delivery of additives into lubricants wherein the gel has reduced ash and SAPS producing components.

Low ash controlled release gels

An internal combustion engine with a catalyst-containing exhaust-gas aftertreatment device is lubricated with a composition of a base oil; and a zinc salt of a mixture of phosphorus-containing compounds having hydrocarbyl groups Rand Rwhere the average total number of carbon atoms in Rplus Rfor the mixture of phosphorus-containing compounds is at least 9.5, where 4 to 30 weight percent of such groups contain 2 to 4 carbon atoms and where in less than 8 mole percent of the phosphorus-containing molecules in the mixture of phosphorus-containing compounds each of Rand Rcontain 2 to 4 carbon atoms.

Method of lubricating an internal combustion engine and improving the efficiency of the emissions control system of the engine

Internal combustion engines exhibit improved efficiency of the emissions control system by using a lubricating oil composition of a base oil, an alkali or alkaline earth metal-containing detergent; a metal salt of one or more phosphorus-containing compounds represented by the formula (I), wherein Xand Xare independently O or S, and Rand Rare independently hydrocarbyl groups, the average total number of carbon atoms in Rand Rfor the one or more phosphorus-containing compounds being at least 10.4; and an acylated nitrogen-containing compound having at least about 10 alphatic carbon atoms and a TBN of at least about 2; the lubricating oil composition being characterized by a phosphorus concentration of up to about 0.12% by weight and the substantial absence of copper, thereby generating a lean-phosphorus containing exhaust gas.

A composition for lubricating an internal combustion engine includes an oil of lubricating viscosity; a predominantly linear alkylbenzenesulfonate detergent having a metal ratio of at least 8; and a combination of hindered phenolic ester antioxidant and aromatic amine antioxidant. The amount of any phenate detergent is less than 15% by weight of the total amount of detergents.

Sulfonate detergent system for improved fuel economy

Molybdenum, sulfur and boron containing lubricating oil composition

A composition comprising: a high-sulfur API Group I mineral oil base stock; a molybdenum dithiocarbamate in an amount suitable to provide 50 to about 600 ppm molybdenum to the composition; a succinimide dispersant based on a polyolefin-substituted succinic structure, where the polyolefin has a number average molecular weight of at least 1500; a zinc dialkyldithiophosphate derived from at least one secondary alcohol; and a hindered phenol, alkylated aromatic amine, or sulfurized olefin oxidation inhibitor, is capable of passing a Sequence III test.

Engine lubricant using molybdenum dithiocarbamate as an antioxidant top treatment in high sulfur base stocks

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Chagrin Falls, OH, United States of America

Jack C Kelley