Unleaded fuel compositions

Patent metadata

Field	Value
Publication number	US-9074153-B2
Application number	US-201213553505-A
Country	US
Kind code	B2
Filing date	Jul 19, 2012
Priority date	Dec 12, 2006
Publication date	Jul 7, 2015
Grant date	Jul 7, 2015

Abstract

An unleaded fuel composition comprising: a combination of alkylated benzenes comprising alkyl groups having from 1 to 4 carbon atoms; 5 vol. % or more of one or more aromatic amines; and, an isoparaffin composition selected from the group consisting of alkylate, a combination of isoparaffins having a total number of carbon atoms of 11 or less, and combinations thereof.

First claim

What is claimed is:

1. An unleaded fuel composition comprising a blend comprising:
from about 40 vol. % to about 50 vol. % alkylate having an octane rating [(RON +MON)/2] of 90 or greater, the alkylate comprising less than 5 vol. % isoparaffins having a total of 6-7 carbon atoms and about 70 vol. % or more isoparaffins having a total of 8 carbon atoms;
a quantity, of from 7 vol. % to about 10 vol. % aromatic amine having the following general structure:

wherein R is selected from the group consisting of hydrogen and alkyl groups having from about 1 to 2 carbon atoms;

from about 49 vol. % to about 60 vol. % of a combination of alkylated benzenes comprising a quantity of about 30 vol. % or more toluene and a quantity of xylene, the quantity of xylene being up to about 20 vol. %;
wherein the alkylated benzenes and the quantity of aromatic amine produce the blend exhibiting a MON of 105 or more, the unleaded fuel composition being adapted to operate a high performance engine.

2. The unleaded fuel composition of claim 1 comprising one or more octane booster.

3. The unleaded fuel composition of claim 1 wherein R is selected from the group consisting of hydrogen and a methyl group.

4. The unleaded fuel composition of claim 3 , the blend exhibiting an octane rating of 110 or more.

5. The unleaded fuel composition of claim 1 wherein the aromatic amine is aniline.

6. The unleaded fuel composition of claim 5 wherein the quantity of xylene is effective to produce the blend comprising 15 vol. % or more xylene.

7. The unleaded fuel composition of claim 6 wherein the quantity of toluene is effective to produce the blend comprising about 34 vol. % or more toluene.

8. The unleaded fuel composition of claim 1 wherein the quantity of xylene is effective to produce the blend comprising 15 vol. % or more xylene.

9. The unleaded fuel composition of claim 8 wherein the quantity of toluene is effective to produce the blend comprising about 34 vol. % or more toluene.

10. The unleaded fuel composition of claim 8 wherein R is selected from the group consisting of hydrogen and a methyl group.

11. The unleaded fuel composition of claim 9 wherein R is selected from the group consisting of hydrogen and a methyl group.

12. The unleaded fuel composition of claim 1 wherein the quantity of toluene is effective to produce the blend comprising about 34 vol. % or more toluene.

13. The unleaded fuel composition of claim 1 further comprising:
40 mg/kg lead replacement additive;
30 mg/kg antioxidant; and,
from about 1 to about 2 g/gallon detergent additive.

14. The unleaded fuel composition of claim 1 further comprising 40 mg/kg lead replacement additive.

15. An unleaded fuel composition comprising a blend comprising:
an isoparaffin composition comprising a sufficient amount of iso-octane to produce the blend comprising from about 40 vol. % to about 50 vol. % iso-octane;
a quantity of from 7 vol. % to about 10 vol. % aromatic amine having the following general structure:

wherein R is selected from the group consisting of hydrogen and alkyl groups having from about 1 to 2 carbon atoms; and,
from about 43 vol. % to about 60 vol. % of a combination of alkylated benzenes, wherein the selected alkylated benzenes, their respective amounts, and the quantity of aromatic amine produce the blend exhibiting a MON of 105 or more, the alkylated benzenes comprising toluene and one or more of (a) a quantity of xylene, the quantity of xylene being up to 20 vol. %, and (b), an amount of trimethylbenzene effective to produce the MON of 105 or more;
wherein the unleaded fuel composition is adapted to operate a high performance engine.

16. The unleaded fuel composition of claim 15 comprising one or more octane booster.

17. The unleaded fuel composition of claim 15 wherein R is selected from the group consisting of hydrogen and a methyl group.

18. The unleaded fuel composition of claim 17 wherein the blend exhibits an octane rating of 110 or more.

19. The unleaded fuel composition of claim 15 wherein the quantity of xylene is effective to produce the blend comprising 14 vol. % or more xylene.

20. The unleaded fuel composition of claim 19 wherein the amount of trimethylbenzene is from about 12 to about 16 vol. %.

21. The unleaded fuel composition of claim 15 wherein the blend comprises from about 3 to about 7 vol. % isopentane.

22. The unleaded fuel composition of claim 21 wherein the amount of trimethylbenzene is from about 12 to about 16 vol. %.

23. The unleaded fuel composition of claim 15 wherein the blend comprises 45 vol. % or more iso-octane.

24. The unleaded fuel composition of claim 15 wherein said amount of trimethvlbenzene is from about 12 to about 16 vol. %.

25. An unleaded fuel composition comprising a blend comprising:
a quantity of alkylate comprising isoparaffins and having an octane rating [(RON +MON)/2] of 90 or greater, the alkylate comprising less than 5 vol. % isoparaffins having a total of 6-7 carbon atoms and about 70 vol. % or more isoparaffins having a total of 8 carbon atoms;
an isoparaffin composition comprising an amount of iso-octane effective to produce the blend comprising 40 vol. % or more iso-octane;
a quantity of from 7 vol. % to about 10 vol. % aromatic amine having the following general structure:

wherein R is selected from the group consisting of hydrogen and alkyl groups having from about 1 to 2 carbon atoms; from about 43 vol. % to about 60 vol. % of a combination of alkylated benzenes, wherein the selected alkylated benzenes, their respective amounts, and the quantity of aromatic amine produce the blend exhibiting a MON of 105 or more, the alklated benzenes comprising a quantity of about 40 vol. % or less toluene and one or both of (a) quantity of about 10 vol. % or more xylene, and(b) an amount trimethylbenzene sufficient to produce the MON of 105 or more;
wherein the unleaded fuel composition is adapted to operate a high performance engine.

26. The unleaded fuel composition of claim 25 comprising one or more octane booster.

27. The unleaded fuel composition of claim 26 wherein R is selected from the group consisting of hydrogen and a methyl group.

28. The unleaded fuel composition of claim 27 wherein the quantity of toluene is effective to produce the blend comprising 15 vol. % or more toluene.

29. The unleaded fuel composition of claim 25 wherein R is selected from the group consisting of hydrogen and a methyl group.

30. The unleaded fuel composition of claim 29 wherein the quantity of xylene is effective to produce the blend comprising 14 vol. % or more xylene.

31. The unleaded fuel composition of claim 30 wherein the quantity of toluene is effective to produce the blend comprising 15 vol. % or more toluene.

32. The unleaded fuel composition of claim 31 further comprising:
40 mg/kg lead replacement additive;
30 mg/kg antioxidant; and,
from about 1 to abou

Assignees

• Landschof Jörg
• Macknay Michael Clifford
• Shea Timothy Michael
• Shell Oil Co

Inventors

• Landschof Jörg
• Macknay Michael Clifford
• Shea Timothy Michael

Classifications

• C10L1/06 Primary

  for spark ignition · CPC title

• C10L1/023

  for spark ignition · CPC title

• C10L10/10

  for improving the octane number · CPC title

• C10L1/223

  having at least one amino group bound to an aromatic carbon atom {(C10L1/221, C10L1/2227 take precedence)} · CPC title