Functional fluids for internal combustion engines

• Main Authors: KENDALL, DAVID ROY, BREWER, MARK LAWRENCE
• Format: Patent
• Language: English
• Published: 19.04.2012
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; CHEMISTRY; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS; LIQUEFIED PETROLEUM GAS; LUBRICANTS; LUBRICATING COMPOSITIONS; METALLURGY; NATURAL GAS; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION

The present invention provides a functional fluid suitable for use in an internal combustion engine, comprising: (a) a major amount of a base fluid; (b) a minor amount of a polysubstituted alkanol amine derivative reaction product obtainable by reacting: (i) a carboxylate compound of formula (I) RCOOR in which: R is an aliphatic C-hydrocarbon radical; and R is hydrogen or alkyl, mono- or polyhydroxyalkyl, or ammonium; with (ii) an alkanol amine of the formula (II) NHRR, wherein R and R are independently selected from hydrogen atoms and linear or branched-chain hydrocarbon groups, the carbon chain of which is optionally interrupted by one or more -NH- groups and which optionally has at least one hydroxyl group attached to a carbon atom of the hydrocarbon group, with the proviso that R and Rare not both hydrogen atoms and that at least one of said residues R and R carries at least one hydroxyl group; in a molar ratio of the -COO- groups of the carboxylate compound of formula (I) to the molar sum of OH and NH groups of the alkanol amine of formula (II) in a range and under reaction conditions supporting the formation of a reaction product comprising polysubstituted alkanol amine derivatives; and (c) a minor amount of a detergent additive.