James I Defrancesco

US Patent:

52660818, Nov 30, 1993

Filed:

Oct 18, 1991

Appl. No.:

7/779456

Inventors:

Noyes L. Avery - Bryn Mawr PA
Angeline B. Cardis - Florence NJ
James V. DeFrancesco - Bensenville IL
Virginia C. Wiszniewski - Voorhees NJ

Assignee:

Mobil Oil Corporation - Fairfax VA

International Classification:

C10L 122

US Classification:

44331

Abstract:

A fuel additive is the reaction product of an intermediate reaction product of a hydrocarbon-substituted succinic anhydride and an aminosalicylic acid, preferably a 4-aminosalicylic acid. The intermediate is reacted with an aldehyde, preferably formaldehyde and an alkylenepolyamine preferably tetraethylenepentamine. The reaction product is post reacted with a hydrocarbon-substituted succinic anhydride which can be the same or different as the hydrocarbon-substituted succinic anhydride of the intermediate. The additive has dispersant and detergent properties and is effective in liquid hydrocarbon or liquid oxygenated fuels or mixtures of the said fuels.