The Lubrizol Corporation

Other

Gordon D Lamb

William D Abraham

Virginia A Carrick

James P Roski

Ewa A Bardasz

Paul E Adams

Jody A Kocsis

Richard A Denis

Thomas J Wolak

Thomas T Curtis

Susan V Cowling

John Kent Pudelski

Margaret C Waid

Michael Yuratich

Frederick W Koch

Robert Jones

Mary Galic Raguz

Renee A Eveland

Michael Stuart Hazell

Carl F Stachew

Paul Ryder

David Dalby

Robert Ian Wilby

R Ian Wilby

A Bardasz Ewa

Apparatus and methods for performing optical analyses in a harsh environment are disclosed. Some of the systems and methods of the present disclosure include fluorescence, absorption, and reflectance detection using a drum spectrometer. Other systems and methods of the present disclosure include a measurement channel and a parallel reference channel concurrently filtering optical signals.

Optical fluid analyzer

A dispersant composition comprising the product of an amine, an alcohol, or an amino alcohol, with a hydrocarbyl-substituted succinic anhydride component exhibits improved viscosity stability and reduced chlorine content, when the hydrocarbyl-substituted succinic anhydride component comprises: (a) 10 to 95 weight percent of a component prepared by reacting a polyisobutylene with maleic anhydride in the presence of chlorine; and (b) 5 to 90 weight percent of a component prepared by reacting a polyisobutylene with maleic anhydride in the substantial absence of chlorine.

Mixed dispersants for lubricants

Lubricating oils containing an additive formulation including at least one sulphonate, saligenin and salixarate detergent provide improved wear performance and decreased sulphur and phosphorus emissions.

Additive formulation for lubricating oils

A composition suitable for reducing sludge and degradation of elastomer seals in engines comprises an oil of lubrication viscosity and a minor amount of a sludge preventing/seal protecting nitrogen containing dispersant, which is a reaction product of a hydrocarbyl-substituted succinic acylating agent having a limited amount of low molecular weight substituent; and a polyamine or condensed polyamine containing less than 20 mole percent of polyamine components of 6 or fewer nitrogen atoms.

Modified polyisobutylene succinimide dispersants having improved seal, sludge, and deposit performance

Lubricating oil composition

A lubricant containing (a) a synthetic base oil composition having an overall kinematic viscosity of at least about 4.8&times;10 m /s (4.8 cSt) at 100&deg; C. and a viscosity index of at least about 110; (b) a dispersant-viscosity modifier; and (c) a sulfur-free functionalized hydrocarbyl-substituted phenol detergent provides improved valve train wear, with longer drain intervals, to heavy duty diesel engines.

Synthetic diesel engine lubricants containing dispersant-viscosity modifier and functionalized phenol detergent

This invention relates to a lubricating oil composition, comprising: (A) a base oil; (B) an alkali or alkaline earth metal salt of a saligenin derivative; (C) an alkali or alkaline earth metal salt of a hydrocarbon-substituted salicylic acid, and (D) a metal salt of a phosphorus-containing compound.

Lubricant compositions containing ester-substituted hindered phenol antioxidants

A lubricant containing (a) a synthetic base oil composition having an overall kinematic viscosity of at least about 4.8&times;10,m,/s (4.8 cSt) at 100&deg; C. and a viscosity index of at least about 110; (b) a dispersant-viscosity modifier; and (c) a sulfur-free functionalized hydrocarbyl-substituted phenol detergent provides improved valve train wear, with longer drain intervals, to heavy duty diesel engines.

A saligenin derivative such as the magnesium salt represented by the formula

Lubricating oil compositions containing saligenin derivatives

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Mickleover, United Kingdom

Gordon D Lamb