Claims
- 1. A fuel composition comprising a major proportion of a normally liquid fuel and a minor proportion of a polyamine comprising units of the formula: ##STR25## wherein R is independently hydrogen or C.sub.1-7 hydrocarbyl; R' is hydrogen, alkyl or NH.sub.2 R"(NR").sub.y, wherein y is a number in the range from 1 to about 6 and R" is an alkylene group of 1 to about 10 carbon atoms; Y represents N or O; X is an alkylene group; A is hydrocarbyl; Z is a heterocyclic ring containing at least one nitrogen atom; x is a number in the range from 1 to about 10; u is an integer greater than 1; and n is 0 or 1.
- 2. The fuel composition as defined in claim 1 wherein said units comprise: ##STR26## wherein R, R.sup.1, Z, x and u are the same as defined in claim 1.
- 3. A fuel composition comprising a major amount of a normally liquid fuel and a minor amount of a product produced by a process comprising reacting a mixture comprising
- (A) at least one compound represented by the formula: ##STR27## wherein each R is independently hydrogen or a hydrocarbyl, Y represents S, N, or O; A and X each independently represent an alkylene group; n is 0 or 1 dependent upon m and q, where q is 0 or 1, m is 2 or 3; with
- (B) at least one polyamine represented by the formula: ##STR28## wherein each R is hydrogen or a hydrocarbyl group,
- each R' is independently hydrogen, alkyl, or NH.sub.2 R"(NR").sub.y wherein each R" is independently an alkylene group of 1 to about 10 carbon atoms and y is a number in the range of from 1 to about 6,
- each Z is independently a heterocyclic ring containing at least one nitrogen atom and
- x is a number in the range of from 1 to about 10 in the presence of
- (C) an acid catalyst at an elevated temperature.
- 4. The fuel composition of claim 3 wherein reactant (A) is a polyhydric alcohol of formula (II) having 3 hydroxy groups or an amino alcohol of formula (II) having 2 or 3 hydroxy groups and
- reactant (B) is a heterocyclic polyamine of formula (III) having at least 2 primary nitrogen groups wherein Z is a 5- or 6-membered heterocyclic ring.
- 5. The fuel composition of claim 3 wherein
- reactant (A) is selected from the group consisting of glycerol, trimethylolethane, trimethylolpropane, diethanolamine and tris(hydroxymethyl)aminomethane; and
- reactant (B) is selected from the group consisting of piperazines, pyridines, morpholines, n-aminoalkyl morpholines, pyrrolidines and ethylene polyamine bottoms comprising cyclic condensation products and mixtures thereof.
- 6. The fuel composition of claim 5 wherein reactant (A) is tris(hydroxymethyl)aminomethane.
- 7. The fuel composition of claim 5 wherein reactant (A) is diethanolamine.
- 8. The fuel composition of claim 3 wherein polyamine reactant B is an ethylene polyamine bottoms containing less than about 2% by weight total diethylenetriamine or triethylenetetramine and containing cyclic condensation products.
- 9. The fuel composition of claim 8 wherein reactant A is tris(hydroxymethyl)aminomethane.
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a divisional of co-pending U.S. Ser. No. 08/055,471, filed on Apr. 29, 1993, now U.S. Pat. No. 5,296,154; which is a divisional of U.S. Ser. No. 07/936,700 filed on Aug. 27, 1992, now U.S. Pat. No. 5,230,714; which is a divisional of U.S. Ser. No. 07/714,579 filed on Jun. 13, 1991, now U.S. Pat. No. 5,160,648; which is a divisional of U.S. Ser. No. 07/390,439 filed on Aug. 3, 1988, now U.S. Pat. No. 5,053,152; which is a continuation of U.S. Ser. No. 06/711,799 filed on Mar. 14, 1985, now abandoned.
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Country |
882024 |
Sep 1971 |
CAX |
1069136 |
Jan 1980 |
CAX |
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Sep 1970 |
NOX |
437264 |
Jun 1976 |
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Divisions (4)
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Number |
Date |
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Parent |
55471 |
Apr 1993 |
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Parent |
936700 |
Aug 1992 |
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Parent |
714579 |
Jun 1991 |
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Parent |
390439 |
Aug 1988 |
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Continuations (1)
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Parent |
711799 |
Mar 1985 |
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