Chevron Oronite Company LLC

Kam-Sik Ng

Elaine S Yamaguchi

Kenneth Dale Nelson

Paula S Rogers

A lubricating oil composition is disclosed which comprises (a) a major amount of an oil of lubricating viscosity; and (b) an oil-soluble titanium compound of Formula I: wherein R, R, Rand Rare independently a C-Calkoxy group, and further wherein the lubricating oil composition is free of any zinc dialkyldithiophosphate.

Lubricating oil compositions

Disclosed is a method for improving copper corrosion performance of a lubricating oil composition containing (a) a major amount of a base oil of lubricating viscosity; and (b) one or more dispersants containing one or more basic nitrogen atoms. The method involves adding to the lubricating oil composition an effective amount of one or more copper corrosion performance improving agents containing one or more oil-soluble titanium compounds.

Method for improving copper corrosion performance

Disclosed is a method for improving compatibility of a fluorocarbon elastomer seal with a lubricating oil composition containing (a) a major amount of a base oil of lubricating viscosity; and (b) one or more dispersants containing one or more basic nitrogen atoms. The method involves adding to the lubricating oil composition an effective amount of one or more fluorocarbon elastomer compatibility improving agents comprising one or more oil-soluble titanium compounds.

Method for improving fluorocarbon elastomer seal compatibility

Disclosed is a method for improving compatibility of a fluorocarbon elastomer seal with a lubricating oil composition containing (a) a major amount of a base oil of lubricating viscosity; and (b) one or more dispersants containing one or more basic nitrogen atoms. The method involves adding to the lubricating oil composition an effective amount of one or more fluorocarbon elastomer compatibility improving agents of the general formula Si&#x2014;Xor a hydrolysis product thereof, wherein each X is independently a hydroxyl-containing group, hydrocarbyloxy-containing group, acyloxy-containing group, amino-containing group, monoalkyl amino-containing group or dialkyl amino-containing group.

Disclosed is a method for improving copper corrosion performance of a lubricating oil composition containing (a) a major amount of a base oil of lubricating viscosity; and (b) one or more dispersants containing one or more basic nitrogen atoms. The method involves adding to the lubricating oil composition an effective amount of one or more copper corrosion performance improving agents of the general formula Si&#x2014;Xor a hydrolysis product thereof, wherein each X is independently a hydroxyl-containing group, hydrocarbyloxy-containing group, acyloxy-containing group, amino-containing group, monoalkyl amino-containing group or dialkyl amino-containing group.

A lubricating oil composition is disclosed which comprises (a) a major amount of an oil of lubricating viscosity, and (b) an oil-soluble tetra-functional hydrolyzable silane compound of the general formula Si&#x2014;Xor a hydrolysis product thereof, wherein each X is independently a hydroxyl-containing group, hydrocarbyloxy-containing group, acyloxy-containing group, amino-containing group, monoalkyl amino-containing group or a dialkyl amino-containing group, and further wherein the lubricating oil composition is free of any zinc dialkyl dithiophosphate.

Disclosed are lubricating oil compositions comprising a major amount of an oil of lubricating viscosity and a tetra-functional hydrolyzable silane compound of the general formula Si&#x2014;Xor hydrolysis product thereof, wherein X is independently selected from the group consisting of hydroxyl, alkoxy, aryloxy, acyloxy, amino, monoalkyl amino and dialkyl amino.

Tetraoxy-silane lubricating oil compositions

Disclosed is a method for forming an antiwear film on an internal engine component comprising: contacting a surface of an internal wearing component of the engine with a tetra-functional hydrolyzable silane compound of the general formula Si&#x2014;Xor hydrolysis product thereof, wherein X is independently selected from the group consisting of hydroxyl, alkoxy, aryloxy, acyloxy, amino, monoalkyl amino and dialkyl amino; and hydrolyzing and condensing the tetra-functional silane to thereby form a film. Also disclosed are mixed silane films and the products produced by these methods.

Growing community of inventors

San Lorenzo, CA, United States of America

Kam-Sik Ng