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AssigneeBP Oil Internationa Limited
InventorsRoberto Vittorio Bazzani, Paul James Bennett, Graham Butler, Alisdair Quentin Clark, John Hardy Cooper, Philip Howard, Anthony George William Parker
Estimating the term…
Unleaded blend compositions, as well as formulated gasolines containing them have a Motor Octane Number (MON) of at least 80 comprising either: (i) component (a) at least 5% (by volume of the total composition) of at least one hydrocarbon having the following formula I R—CH2—CH(CH3)—C(CH3)2—CH3I wherein R is hydrogen or methyl, especially triptane, or (ii) at least 2% of component (a′), which is at least one branched chain alkane of MON value of at least 90 and of boiling point 15-160° C. or a substantially aliphatic hydrocarbon refinery stream, of MON value of at least 85, at least 70% in total of said stream being branched chain alkanes, said stream being obtainable or obtained by distillation from a refinery material as a cut having Initial Boiling Point of at least 15° C. and Final Boiling Point of at most 160° C., said Boiling Points being measured according to ASTMD2892, or (iii) at least 10% of component (a″), which is at least one branched chain alkane of 8-12 carbons with at least 4 methyl or ethyl branches The components (a), (a′) and (a″) give rise to reduced emissions to the composition or gasoline on combustion.
An unleaded formulated gasoline comprising a base blend composition having a Motor Octane Number (MON) of at least 80 comprising component (a) at least 5% (by volume of the total composition) of at least one hydrocarbon having the following formula I
An unleaded formulated gasoline comprising a base blend composition having a Motor Octane Number (MON) of at least 80 comprising component (a) at least 5% (by volume of the total composition) of at least one hydrocarbon having the following formula I
An unleaded aviation fuel, having a Motor Octane Number of at least 98, and having a final boiling point of less than 170° C. which comprises:
An unleaded blend composition having a Motor Octane Number (MON) of at least 80 comprising component (a) at least 5% (by volume of the total composition) of at least one hydrocarbon having the following formula I
An unleaded blend composition having a Motor Octane Number (MON) of at least 80 comprising component (a) at least 5% (by volume of the total composition) of at least one hydrocarbon having the following formula I
An unleaded motor gasoline base blend composition having a Motor Octane Number (MON) of at least 80 comprising component (a) 10-40% (by volume of the total composition) of at least one hydrocarbon having the following formula I
An unleaded motor gasoline base blend composition having a Motor Octane Number (MON) of at least 80 comprising component (a) at Least 5% (by volume of the total composition) of at least one hydrocarbon having the following formula I
An unleaded aviation fuel composition, having a Motor Octane Number of at least 98, and having a final boiling point of less than 170° C. which comprises:
An unleaded aviation fuel composition, having a Motor Octane Number of at least 98, which comprises:
An unleaded aviation fuel having a Motor Octane Number of at least 98, and a final boiling point less than 170° C. which comprises:
116-118. (canceled)
A method of boosting the octane number of an unleaded aviation gasoline which comprises having present in said gasoline a compound of formula I or a branched chain alkyl substituted benzene having 1 or 2 branched chain secondary or tertiary alkyl groups of 3-5 carbons.
A method of reducing the exhaust gas temperature from combustion in a spark ignition aviation combustion engine of an unleaded aviation gasoline, which comprises having present in said gasoline a compound of formula I or a branched chain alkyl substituted benzene having 1 or 2 branched chain secondary or tertiary alkyl groups of 3-5 carbons.
121-164. (canceled)
Dependencies are inferred from the claim text.