Compositions and methods and uses relating thereto
AssigneeInnospec Limited
InventorsCenk R. Burgazli, Christopher E. LeMieux
Life of this patent
Estimating the term…
Abstract
A compound of formula (I): wherein p is at least 1, n is at least 1 and less than or equal to p; Ar is a polycyclic aromatic moiety, R1 is hydrogen or an optionally substituted hydrocarbyl group and each of R2, R3 and R4 is independently an optionally substituted hydrocarbyl group, provided that at least one of R2, R3 and R4 has at least 6 carbon atoms.
Claims21
A compound of formula (I):
- wherein p is 2 or 4, n is at least 1 and less than or equal to p;
- Ar is a polycyclic aromatic moiety based on a fluorene, anthracene or pyrene moiety, or an isomer thereof, R1 is hydrogen or an unsubstituted alkyl, alkenyl or aralkyl group and each of R2, R3 and R4 is independently an unsubstituted alkyl, alkenyl or aralkyl group, provided that at least one of R2, R3 and R4 has at least 6 carbon atoms.
A method of preparing a compound of formula (I):
- the method comprising admixing (a) a quaternary ammonium salt, a tertiary amine or a tertiary amine salt with (b) a sulfonated polycyclic aromatic compound;
- wherein p is 2 or 4, n is at least 1 and less than or equal to p;
- Ar is a polycyclic aromatic moiety based on a fluorene, anthracene or pyrene moiety, or an isomer thereof, R1 is hydrogen or an unsubstituted alkyl, alkenyl or aralkyl group and each of R2, R3 and R4 is independently an unsubstituted alkyl, alkenyl or aralkyl group, provided that at least one of R2, R3 and R4 has at least 6 carbon atoms.
A composition comprising a compound of formula (I):
- wherein p is 2 or 4, n is at least one and is less than or equal to p;
- Ar is a polycyclic aromatic moiety based on a fluorene, anthracene or pyrene moiety, or an isomer thereof, R1 is hydrogen or an unsubstituted alkyl, alkenyl or aralkyl group and each of R2, R3 and R4 is independently an unsubstituted alkyl, alkenyl or aralkyl group, provided that at least one of R2, R3 and R4 has at least 6 carbon atoms.
A fuel composition comprising a fuel, one or more additives and a compound of formula (I):
- wherein p is at least 1, n is at least 1 and is less than or equal to p;
- Ar is a polycyclic aromatic moiety, R1 is hydrogen or an optionally substituted hydrocarbyl group and each of R2, R3 and R4 is independently an optionally substituted hydrocarbyl group, provided that at least one of R2, R3 and R4 has at least 6 carbon atoms.
A method of preparing a fuel composition, the method comprising:
- preparing an additive composition comprising a compound of formula (I):
- wherein p is at least 1, n is at least 1 and is less than or equal to p;
- Ar is a polycyclic aromatic moiety, R1 is hydrogen or an optionally substituted hydrocarbyl group and each of R2, R3 and R4 is independently an optionally substituted hydrocarbyl group, provided that at least one of R2, R3 and R4 has at least 6 carbon atoms;
- and
- dosing said additive composition into a fuel.
A method of determining the presence of an additive in a fuel composition comprising said additive and a compound of formula (I):
- wherein p is at least 1, n is at least 1 and is less than or equal to p;
- Ar is a polycyclic aromatic moiety, R1 is hydrogen or an optionally substituted hydrocarbyl group and each of R2, R3, and R4 is independently an optionally substituted hydrocarbyl group, provided that at least one of R2, R3 and R4 has at least 6 carbon atoms, the method comprising applying electromagnetic radiation having a first wavelength to said fuel composition;
- and determining the emission of electromagnetic radiation from the compound of formula (I) at a second wavelength.
A method of determining the concentration of a first additive in a fuel composition comprising said first additive and a compound of formula (I):
- wherein p is at least 1, n is at least 1 and is less than or equal to p;
- Ar is a polycyclic aromatic moiety, R1 is hydrogen or an optionally substituted hydrocarbyl group and each of R2, R3 and R4 is independently an optionally substituted hydrocarbyl group, provided that at least one of R2, R3 and R4 has at least 6 carbon atoms, the compound of formula (I) being present in the fuel composition at a concentration that is proportional to the concentration of the first additive;
- the method comprising:
- applying electromagnetic radiation having a first wavelength to said fuel composition;
- measuring emission of electromagnetic radiation from the compound of formula (I) at a second wavelength;
- and calculating from the level of emission at said second wavelength the concentration of the first additive in the fuel composition.
A method of determining the concentration of an additive composition that has been dosed into a fuel composition, wherein the additive composition comprises a compound of formula (I):
- wherein p is at least 1, n is at least 1 and is less than or equal to p;
- Ar is a polycyclic aromatic moiety, R1 is hydrogen or an optionally substituted hydrocarbyl group and each of R2, R3 and R4 is independently an optionally substituted hydrocarbyl group, provided that at least one of R2, R3 and R4 has at least 6 carbon atoms and at least one further additive;
- the method comprising:
- applying electromagnetic radiation having a first wavelength to said fuel composition;
- measuring emission of electromagnetic radiation from the compound of formula (I) at a second wavelength;
- and calculating from the level of emission at said second wavelength the concentration of the compound of formula (I) in the fuel composition.
A kit for determining the concentration of a compound of formula (I) in a fuel composition, the kit comprising means for applying electromagnetic radiation having a first wavelength to said fuel composition;
- and means for measuring emission of electromagnetic radiation at a second wavelength.
Dependencies are inferred from the claim text.