Novel gasoline compositions and additives therefor

• US 4,005,992 A
• Filed: 03/08/1976
• Issued: 02/01/1977
• Est. Priority Date: 03/08/1976
• Status: Expired due to Term

• Current Assignee: Ethyl Corporation (Newmarket Corporation)
• Original Assignee: Ethyl Corporation (Newmarket Corporation)
• Inventors: Niebylski, Leonard M., Rifkin, Ellis B.
• Primary Examiner(s): Wyman, Daniel E.
• Assistant Examiner(s): Harris-Smith, Mrs. Y.
• Application Number:
  US05/664,504
• Time in Patent Office: 330 Days
• Field of Search: 44/66, 44/68, 44/70, 252/386
• US Class Current: 44/360
• CPC Class Codes: C10L 1/14 Organic compounds
• CPC Class Codes: C10L 1/19 Esters ester radical containing compounds; ester ethers; carbonic acid esters C10L1/1802, C10L1/1805, C10L1/1808, C10L1/1811, C10L1/1814, C10L1/1817 take precedence
• CPC Class Codes: C10L 1/205 carboxylic radical containing compounds or derivatives, e.g. salts, esters
• CPC Class Codes: C10L 1/2222 (cyclo)aliphatic amines; polyamines (no macromolecular substituent 30C); quaternair ammonium compounds; carbamates C10L1/221 takes precedence
• CPC Class Codes: C10L 1/223 having at least one amino group bound to an aromatic carbon atom C10L1/221, C10L1/2227 take precedence
• CPC Class Codes: C10L 1/224 Amides; Imides carboxylic acid amides, imides C10L1/221, C10L1/2227 take precedence
• CPC Class Codes: C10L 1/305 organo-metallic compounds (containing a metal to carbon bond)
• CPC Class Codes: C10L 10/02 for reducing smoke development
• CPC Class Codes: C10L 10/06 for facilitating soot removal
• CPC Class Codes: C10L 10/10 for improving the octane number

Abstract

Gasoline compositions and additive mixtures containing compounds having the formula ##STR1## wherein R₁, R₂ and R₃ are independently selected from hydrogen, hydrocarbyl radicals, and substituted hydrocarbyl radicals, and R₄ is selected from hydrogen, hydrocarbyl radicals, substituted hydrocarbyl radicals, hydrocarbyloxy radicals, and hydrocarbyloxycarbonyl radicals, in an amount sufficient to alleviate the plugging of certain catalysts being used in an engine exhaust system to lower the amount of undesirable constituents in exhaust gas from an engine being operated on gasoline containing a cyclopentadienyl manganese antiknock.

Claims

1. As a composition of matter, a gasoline for an internal combustion engine comprising

i. an antiknock amount of a cyclopentadienyl manganese tricarbonyl antiknock compound, and

ii. an amount sufficient to reduce plugging of an exhaust gas catalyst of a compound having the general formula:

##STR10## wherein R₁, R₂ and R₃ are independently selected from hydrogen, hydrocarbyl radicals, and substituted hydrocarbyl radicals, and R₄ is selected from hydrogen, hydrocarbyl radicals, substituted hydrocarbyl radicals, hydrocarbyloxy radicals, or hydrocarbyloxycarbonyl radicals.

2. The composition of claim 1 wherein said cyclopentadienyl group is a hydrocarbon group containing from 5 to about 17 carbon atoms.

3. The composition of claim 2 wherein said cyclopentadienyl group is methylcyclopentadienyl.

4. The composition of claim 3 wherein said hydrocarbyl radical is an alkyl radical having from 1 to about 20 carbon atoms.

5. The composition of claim 4 wherein R₄ is hydrogen.

6. The composition of claim 5 wherein R₁, R₂ and R₃ are ethyl radicals.

7. The composition of claim 5 wherein R₁, R₂ and R₃ are methyl radicals.

8. A substantially lead-free gasoline for use with a noble metal exhaust gas purification catalyst, said gasoline comprising

i. a cyclopentadienyl manganese tricarbonyl antiknock compound in an amount sufficient to improve the antiknock characteristics of said gasoline, and

ii. a compound in an amount sufficient to reduce plugging of said noble metal exhaust gas purification catalyst, said compound having the general formula:

##STR11## wherein R₁, R₂ and R₃ are independently selected from hydrogen, hydrocarbyl radicals, and substituted hydrocarbyl radicals, and R₄ is selected from hydrogen, hydrocarbyl radicals, substituted hydrocarbyl radicals, hydrocarbyloxy radicals, and hydrocarbyloxycarbonyl radicals.

9. The gasoline of claim 8 wherein said cyclopentadienyl group is a hydrocarbon group containing from 5 to about 17 carbon atoms.

10. The gasoline of claim 9 wherein said cyclopentadienyl group is methylcyclopentadienyl.

11. The gasoline of claim 10 wherein said hydrocarbyl radical is an alkyl radical having from 1 to about 20 carbon atoms.

12. The gasoline of claim 11 wherein R₄ is hydrogen.

13. The gasoline of claim 12 wherein R₁, R₂ and R₃ are ethyl radicals.

14. The gasoline of claim 12 wherein R₁, R₂ and R₃ are methyl radicals.

15. An additive fluid for gasoline comprising

i. a cyclopentadienyl manganese tricarbonyl antiknock compound, and

ii. a compound having the general formula:

##STR12## wherein R₁, R₂ and R₃ are independently selected from hydrogen, hydrocarbyl radicals, and substituted hydrocarbyl radicals, and R₄ is selected from hydrogen, hydrocarbyl radicals, substituted hydrocarbyl radicals, hydrocarbyloxy radicals, and hydrocarbyloxycarbonyl radicals.

16. The additive fluid of claim 15 wherein said fluid contains an antiknock amount of said cyclopentadienyl manganese tricarbonyl antiknock compound.

17. The additive fluid of claim 15 wherein said fluid contains an amount sufficient to reduce the plugging of an exhaust gas catalyst of the compound having the general formula:

##STR13##

18. The additive fluid of claim 15 wherein said cyclopentadienyl group is a hydrocarbon group containing from 5 to about 17 carbon atoms.

19. The additive fluid of claim 18 wherein said cyclopentadienyl group is methylcyclopentadienyl.

20. The additive fluid of claim 19 wherein said hydrocarbyl radical is an alkyl radical having from 1 to about 20 carbon atoms.

21. The additive fluid of claim 20 wherein R₄ is hydrogen.

22. The additive fluid of claim 21 wherein R₁, R₂ and R₃ are ethyl radicals.

23. The additive fluid of claim 21 wherein R₁, R₂ and R₃ are methyl radicals.