Liquid hydrocarbon fuels containing high molecular weight Mannich bases
AssigneeStandard Oil Company (Indiana)
InventorsJohn H. Udelhofen, Roger W. Watson
Life of this patent
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Abstract
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.
Claims9
A liquid hydrocarbon combustion fuel containing an amount sufficient to impart improved detergency properties thereto of an additive composition comprising the condensation product of (1) a high molecular weight sulfur-free alkyl-substituted hydroxyaromatic compound wherein the alkyl group has a number average molecular weight of from about 600 to about 3,000, (2) an amine which contains an amino group having at least one active hydrogen atom, and (3) an aldehyde, wherein the respective molar ratio of reactants is 1:0.1-10:0.1-10.
Dependencies are inferred from the claim text.