High octane unleaded aviation gasolines
AssigneeTexaco Inc.
InventorsWilliam M. Studzinski, Joseph N. Valentine, Peter Dorn, Teddy G. Campbell, Peter M. Liiva
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Abstract
Novel aviation fuel compositions contain a substantially positive or synergistic combination of an alkyl tertiary butyl ether, an aromatic amine and, optionally, a manganese component. The basefuel containing the additive combination may be a wide boiling range alkylate basefuel.
Claims39
An unleaded aviation fuel composition comprising:
- (1) a wide boiling range alkylate basefuel having a boiling range from about 85.degree. F..+-.10.degree. F. to about 400.degree. F..+-.15.degree. F. and
- (2) a substantially positive or synergistic combination of
- (a) an alkyl tertiary butyl ether, and
- (b) an aromatic amine having the formula ##STR4## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are hydrogen or a C.sub.1 -C.sub.5 alkyl group,
- wherein the alkyl tertiary butyl ether is 0.1 to 40 vol % of the composition and the aromatic amine is 0.1 to 10 wt % of the composition.
A method for preparing an unleaded aviation fuel composition comprising:
- (1) selecting a substantially positive or synergistic set of additives
- (a) an alkyl tertiary butyl ether, and
- (b) an aromatic amine having the formula ##STR5## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are hydrogen or a C.sub.1 -C.sub.5 alkyl group, and
- (2) combining the additives selected in step (1) with a wide boiling range alkylate basefuel having a boiling range from about 85.degree. F..+-.10.degree. F. to about 400.degree. F..+-.15.degree. F., wherein the alkyl tertiary butyl ether is added in an amount of 0.1 to 40 vol % of the composition and the aromatic amine is added in an amount of 0.1 to 10 wt % of the composition.
A method for preparing an unleaded aviation fuel-composition comprising combining a wide boiling range alkylate basefuel having a boiling range from about 85.degree. F..+-.10.degree. F. to about 400.degree. F..+-.15.degree. F. and a synergistic amount of alkyl tertiary butyl ether and an aromatic amine sufficient to raise the motor octane number of the composition to at least 94, wherein the alkyl tertiary butyl ether is added in an amount of 0.1 to 40 vol % of the composition and the aromatic amine is added in an amount of 0.1 to 10 wt % of the composition.
Dependencies are inferred from the claim text.