Ortho-alkylphenol derived mannich detergent composition and concentrate, fuel and method thereof
OwnerMalcolm G.J. Macduff, Rodney J McAtee +2inventors
InventorsMalcolm G.J. Macduff, Rodney J McAtee, Mitchell M Jackson, David J Moreton
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Abstract
A detergent composition comprises a Mannich reaction product of a hydrocarbyl-substituted ortho-alkyl substituted phenol (1) or a mixture of the phenol (1) and a hydrocarbyl-substituted phenol (2), an aldehyde, and an amine where the phenol (1) is present in the mixture at about 50 mole % or higher. Concentrate and fuel compositions include the detergent composition. A method of controlling deposits in an internal combustion engine comprises operating the engine with the fuel composition which results in unexpectedly superior detergent performance.
Claims21
A detergent composition useful in hydrocarbon fuels, comprising:
- a Mannich reaction product prepared by adding an aldehyde to a mixture of a phenol (1) having a hydrocarbyl substituent and an ortho-alkyl substituent;
- a phenol (2) having a hydrocarbyl substituent wherein the phenol (1) is present at about 50 mole % or higher in a combination of the phenol (1) and the phenol (2);
- and at least one amine selected from the group consisting of a primary monoamine, and a polyamine having at least two amino groups capable of undergoing a Mannich reaction wherein at least one of the amino groups is a primary amino group;
- and reacting the aldehyde;
- the phenol (1);
- the phenol (2);
- and the at least one amine to form the Mannich reaction product.
The detergent composition of 4;
- wherein the aldehyde has 2 to about 6 carbon atoms;
- and the at least one amine is selected from the group consisting of a primary monoamine, a secondary monoamine, and a polyamine having at least two amino groups capable of undergoing a Mannich reaction.
Dependencies are inferred from the claim text.