Gulf Research & Development Company

Robert J Hartle

Gary M Singerman

Yumi P Ryu

Charles Bello

The antifriction properties of a lubricating oil are enhanced by the addition of a minor amount of an oil-soluble molybdenyl bis-.beta.-diketonate. The antifriction properties are particularly enhanced when the molybdenyl bis-.beta.-diketonate is used in combination with an oil-soluble active sulfur donor, such as a zinc dialkyldithiophosphate.

Lubricating oils containing molybdenyl chelates

Diesel fuel compositions which contain minor amounts of azides having the formula:

Diesel fuel compositions containing certain azides for improved cetane

Gasoline motor fuel compositions which contain minor amounts of an aryl o-aminoazide, such as o-azidoaniline, to impart improved antiknock characteristics and greater oxidation stability to the gasoline.

Gasoline composition containing aryl o-aminoazides

The octane requirement increase of a gasoline fired internal combustion engine is suppressed by the incorporation in the gasoline fed to the engine of a minor amount of cerium (III) or cerium (IV) 2-ethylhexanoate.

Suppressing the octane requirement increase of an automobile engine

A gasoline motor fuel possessing improved antiknock characteristics contains a minor amount of an aliphatic .beta.-diketone and a minor amount of a chelate of cerium(IV) with a .beta.-diketone.

Gasoline fuel compositions containing antiknock additive

A gasoline motor fuel having improved antiknock characteristics is obtained by incorporating a novel chelate of cerium (IV) in the gasoline. Examples of the novel chelates of cerium (IV) include ps

Chelates of cerium (IV), their preparation and gasoline containing said

Novel 1,8-, 2,7-, 3,6- and 2,5-diesters and diacids of phenanthrene.

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Gibsonia, PA, United States of America

Robert J Hartle