Abstract:
A method of removing deposits from a diesel engine, the method comprising combusting in the engine a diesel fuel composition comprising an engine cleaning additive, wherein the engine cleaning additive is the product of a Mannich reaction between: (a) an aldehyde; (b) ammonia, hydrazine or an amine; and (c) an optionally substituted phenol; wherein the or each substituent of the phenol component (c) has an average molecular weight of less than 400.
Abstract:
A method of removing deposits from a diesel engine, the method comprising combusting in the engine a diesel fuel composition comprising an engine cleaning additive, wherein the engine cleaning additive is the product of a Mannich reaction between: (a) an aldehyde; (b) ammonia, hydrazine or an amine; and (c) an optionally substituted phenol; wherein the or each substituent of the phenol component (c) has an average molecular weight of less than 400.
Abstract:
A quaternary ammonium compound of formula (X), wherein R0, R, R2 and R3 is each individually an optionally substituted alkyl, alkenyl or aryl group and R includes an optionally substituted hydrocarbyl moiety having at least 5 carbon atoms.
Abstract:
A gasoline composition comprising, as an additive, one or more quaternary ammonium salt(s) (i) formed by the reaction of a compound of formula (A): and a compound formed by the reaction of a hydrocarbyl-substituted acylating agent and an amine of formula (B1) or (B2): wherein R is an optionally substituted alkyl, alkenyl, aryl or alkylaryl group; R1 is an alkyl, aryl or alkylaryl group having up to 36 carbon atoms; R2 and R3 are the same or different alkyl groups having from 1 to 36 carbon atoms; X is an alkylene group having from 1 to 20 carbon atoms; n is from 0 to 20; m is from 1 to 5; and R4 is hydrogen or a C1 to C36 alkyl group.
Abstract:
A quaternary ammonium compound of formula (X): wherein R0, R1, R2 and R3 is each individually an optionally substituted alkyl, alkenyl or aryl group and R includes an optionally substituted hydrocarbyl moiety having at least 5 carbon atoms.
Abstract:
A quaternary ammonium compound of formula (X): wherein R0, R1, R2 and R3 is each individually an optionally substituted alkyl, alkenyl or aryl group and R includes an optionally substituted hydrocarbyl moiety having at least 5 carbon atoms.
Abstract:
A quaternary ammonium salt of formula wherein each of R1, R2, R3 and R4 is independently selected from an optionally substituted alkyl, alkenyl or aryl group having less than 8 carbon atoms and R5 is hydrogen or an optionally substituted hydrocarbyl group.
Abstract:
A quaternary ammonium salt of formula wherein each of R1, R2, R3 and R4 is independently selected from an optionally substituted alkyl, alkenyl or aryl group having less than 8 carbon atoms and R5 is hydrogen or an optionally substituted hydrocarbyl group.
Abstract:
A quaternary ammonium compound which is the reaction product of: (a) a tertiary amine having a molecular weight of less than 1000; (b) an acid-activated alkylating agent; and (c) a diacid including an optionally substituted hydrocarbyl moiety having at least (5) carbon atoms.
Abstract:
A diesel fuel composition comprising a performance enhancing additive, wherein the performance enhancing additive is the product of a Mannich reaction between: (a) an aldehyde; (b) a polyamine; and (c) an optionally substituted phenol; wherein the molar ratio of component (c) to component (b) in the reaction mixture used to prepare the performance enhancing additive is at least 1.5:1.