| 摘要 |
<p>Unleaded blend compositions, as well as formulated gasolines containing them have a Motor Octane Number (MON) of at least 80 comprising at least 10 % of component (a), which is at least one branched chain alkane of 812 carbons with at least 4 methyl or ethyl branches, and as component (b) at least 20 % of at least one, liquid hydrocarbon or mixture thereof of bp60160 deg;C, especially of MON value at least 70 and RON at least 90 or as component (b) at least 20 % of one or more refinery streams. The component (a) gives rise to reduced emissions to the composition or gasoline on combustion.</p> |
