Standard Oil Company (indiana)

Amoco Corporation

John H Udelhofen

Paul J Cahill

Mack W Hunt

Robert J Basalay

Roger W Watson

Samuel W Harris

Luke A Schaap

A process for incorporating molybdenum into overbased alkaline earth metal and alkali metal sulfonates, phenates and salicylates. The incorporation is a post addition of molybdenum into a previously prepared overbased composition. The resulting composition containing molybdenum is gel-free, haze-free, precipitate-free, has a reproducible Total Base Number (TBN) and is commercially acceptable for use in lubricating oil compositions.

Process for the preparation of overbased molybdenum alkaline earth metal

A transamination process for producing Mannich products comprising reacting a polyamine with a substantially formaldehyde-free mononitrogen Mannich adduct.

Transamination process for Mannich products

An improved low viscosity (i.e.) 5 W to 71/2 W engine oil resistant to oxidation and consumption comprising a major portion of a lubricating oil stock, a sulfurized oil, a dispersant, an anti-corrosion agent, an anti-rust agent, a detergent, an anti-oxidant, and a viscosity index improver.

Low viscosity oils

Reaction products obtained from the Mannich condensation of high molecular weight alkyl-substituted hydroxy aromatic compounds, amines and aldehydes provide improved detergency in liquid hydrocarbon fuels. Optionally, a non-volatile hydrocarbon carrier fluid may be included.

Liquid hydrocarbon fuels containing high molecular weight Mannich bases

Mannich additives formed from a tertiary carbinamine, a substantially hydrocarbon compound having at least one acidic or active hydrogen, a polyamine and a formaldehyde-yielding reagent.

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Wheaton, IL, United States of America

John H Udelhofen