Claims
- 1. A fuel mixture for two-cycle engines having reduced smoke emission properties consisting essentially of
- (a) a mineral lubricating oil basestock,
- (b) a motor gasoline and
- (c) an ionic complex of an oil and fuel-soluble hydrocarbyl substituted amine salt of a dithiophosphoric acid having the formula: ##STR7## wherein, R.sub.1, R.sub.2 and R.sub.3 are the same or different and are selected from the group consisting of hydrogen, a hydrocarbyl group and a hydrocarbyl substituted group, with R.sub.1, R.sub.2 and R.sub.3 each having a total of from 2 to 30 carbon atoms,
- R.sub.4 and R.sub.5 are selected from hydrogen and a hydrocarbyl group containing from 1 to 28 carbon atoms, and at least one of the radicals R.sub.4 or R.sub.5 is a hydrocarbyl group containing from 3 to 18 carbon atoms.
- 2. The fuel mixture of claim 1, wherein the hydrocarbyl groups are alkyl groups.
- 3. The fuel mixture of claim 1, wherein the hydrocarbyl substituted group is an alkyl group containing nitrogen, sulfur or oxygen.
- 4. The fuel mixture of claim 3, wherein the alkyl group containing nitrogen, sulfur or oxygen contains a carbinol, thio, amine, amide, ester or ether group.
- 5. The fuel mixture of claim 2, wherein R.sub.4 and R.sub.5 are selected from hydrogen and an alkyl group containing from 4 to 12 carbon atoms.
- 6. The fuel mixture of claim 1, comprising 0.1 to 5 wt. % of the oil-soluble additive.
- 7. The fuel mixture of claim 1, comprising a volume ratio of oil to fuel ranging from 1:20 to 1:250.
- 8. A method for reducing smoke emitted from a two-cycle internal combustion engine by operating the engine with the mixture of claim 1.
- 9. A fuel mixture for two-cycle engines having reduced smoke emission properties consisting essentially of
- (a) a mineral lubricating oil basestock,
- (b) a motor gasoline, and
- (c) an ionic complex of an oil and fuel-soluble hydrocarbyl substituted amine salt of an oil and fuel-soluble dithiophosphoric acid prepared by reacting an amine having the formula: ##STR8## wherein, R.sub.1, R.sub.2 and R.sub.3 are the same or different and are selected from the group consisting of hydrogen, a hydrocarbyl group and a hydrocarbyl substituted group, with R.sub.1, R.sub.2 and R.sub.3 each having a total of from 2 to 30 carbon atoms;
- with a dithiophosphoric acid having the formula: ##STR9## wherein R.sub.4 and R.sub.5 are selected from hydrogen and hydrocarbyl group containing from 1 to 28 carbon atoms, and at least one of the radicals R.sub.4 and R.sub.5 is a hydrocarbyl group containing from 3 to 18 carbon atoms,
- at an ionic salt forming temperature of not less than 85.degree. C. for a time sufficient for the amine and the dithiophosphoric acid to react and form an ionic salt.
- 10. The fuel mixture of claim 9, wherein the hydrocarbyl groups are alkyl groups.
- 11. The fuel mixture of claim 9, wherein the hydrocarbyl substituted group is an alkyl group containing nitrogen, sulfur or oxygen.
- 12. The fuel mixture of claim 11, wherein the alkyl group containing nitrogen, sulfur or oxygen contains a carbinol, thio, amine, amide, ester or ether group.
- 13. The fuel mixture of claim 10, wherein R.sub.4 and R.sub.5 are selected from hydrogen and an alkyl group containing from 4 to 12 carbon atoms.
- 14. The mixture of claim 9, wherein the primary amine is tallow amine.
- 15. The mixture of claim 9, wherein the primary amine is a dihydrogenated tallow amine.
- 16. The mixture of claim 9, wherein the ionic salt forming temperature is from 85.degree. C. to 140.degree. C.
- 17. A method for reducing smoke emitted from a two-cycle internal combustion engine by operating the engine with the mixture of claim 9.
Parent Case Info
This is a continuation of application Ser. No. 08/272,707, filed Jul. 8, 1994, now abandoned.
US Referenced Citations (23)
Non-Patent Literature Citations (2)
Entry |
Harrison, et al., Wear, 116 (1987) 25-31, month N/A. |
Rounds, "Some Effects of Amines on Zinc Dialkyldithiophosphate Antiwear Performance as Measured in 4-Ball Wear Tests," ASLE Trans., 24 (4), 431-440, month N/A. |
Continuations (1)
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Number |
Date |
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272707 |
Jul 1994 |
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