Alcohol and ether fuel additives for lead-free gasoline
AssigneesSabic Global Technologies B.V., Saudi Arabian Oil Company
InventorsGuillermo Leal, Kareemuddin M. Shaik, Mohammed Bismillah Ansari, Hassan Babiker, Somak Paul, Kamalakar Gunda
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Abstract
An octane-enhancing additive includes a mixed butanol composition, sec-butyl ether, methanol, methyl tert-butyl ether, and a C4-dimer, the mixed butanol composition comprising sec-butanol and tert-butanol, and the C4-dimer comprising di-isobutylene, 2,2,4 trimethylpentane, 2,3,3 trimethylpentane, or a combination comprising at least one of the foregoing.
Claims14
An octane-enhancing composition comprising a mixed butanol composition, sec-butyl ether, methanol, methyl tert-butyl ether, and a C4-dimer,
- the mixed butanol composition comprising sec-butanol and tert-butanol, and
- the C4-dimer comprising at least one of di-isobutylene, 2,2,4 trimethylpentane, or 2,3,3 trimethylpentane;
- wherein methanol is present in an amount of 0.70 volume percent to 2 volume percent;
- wherein methyl tert-butyl ether is present in an amount of 65 to 95 volume percent;
- wherein the mixed butanol composition is present in an amount of 2 to 35 volume percent;
- and
- wherein sec-butyl ether is present in the range of 0.3 to 5 volume percent.
An octane-enhancing composition comprising a mixed butanol composition, sec-butyl ether, methanol, methyl tert-butyl ether, and a C4-dimer,
- the mixed butanol composition comprising sec-butanol and tert-butanol, and
- the C4-dimer comprising at least one of di-isobutylene, 2,2,4 trimethylpentane, or 2,3,3 trimethylpentane;
- wherein methanol is present in an amount of 0.9 volume percent to 2 volume percent;
- wherein methyl tert-butyl ether is present in an amount of 65 to 90 volume percent;
- wherein the mixed butanol composition is present in an amount of 3 to 35 volume percent;
- and
- wherein sec-butyl ether is present in the range of 0.4 to 5 volume percent;
- and
- wherein the C4-dimer is present in the range of 0.19 to 2 volume percent.
Dependencies are inferred from the claim text.