Ashless detergent additives for fuels and lubricants
AssigneePhillips Petroleum Company
InventorsAlbert N. De Vault, Hans D. Holtz
Life of this patent
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Abstract
A long chain monocarboxylic acid is reacted with a multi-amine to produce an amide and the amide is then treated with sulfonic acid to produce a sulfonate to provide compounds which are suitable as ashless detergent additives and the method for producing these compounds are provided. In a preferred embodiment the detergent additives are combined with hydrocarbons suitable as fuel in an internal combustion engine and with oil formulations to provide ashless fuel detergent compositions and lubricant detergent compositions.
Claims12
A method for producing detergent additive for lubricants and fuels comprising:
- 1. reacting a long chain monocarboxylic acid having the general formula R'COOH in which R' is a long chain aliphatic radical having 10-30 carbon atoms with a multi-amine represented by the generic formula N(RNH.sub.2).sub.3 wherein R is an aliphatic radical having 1-6 carbon atoms to produce an amide and
- 2. further reacting the product of (1) with sulfonic acid represented by the formula R"SO.sub.3 H where R" is aliphatic, cycloaliphatic, or alkaryl having 12-30 carbon atoms in the molecule to produce a sulfonated product.
A compound useful as a detergent additive for lubricants and fuels prepared by reacting with a sulfonic acid represented by the formula R"SO.sub.3 H where R" is aliphatic, cycloaliphatic, or alkaryl having 12-30 carbon atoms in the molecule the product of the reaction of a long chain monocarboxylic acid having the general formula R'COOH in which R' is a long chain aliphatic radical having 10-30 carbon atoms and a multi-amine represented by the generic formula N(RNH.sub.2).sub.3 wherein R is an aliphatic radical having 1-6 carbon atoms.
A composition comprising a hydrocarbon suitable as fuel in an internal combustion engine and a compound of claim 5, said compound of claim 6 present in an amount effective as an ashless fuel detergent additive.
Dependencies are inferred from the claim text.