US4038044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasoline additive compositions comprising a combination of diamine and polyamine mannich bases
Assignee: EIDP Inc
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Filing: 1975-09-12
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Granted: 1977-07-26
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Expires: 1995-09-12
Abstract
Abstract A combination of diamine and higher polyamine Mannich condensation products useful in gasoline as carburetor detergents and useful also to control intake valve deposits and quick-heat intake manifold deposits; the diamine being ZNHC n H 2n NHZ and the polyamine being ZNH(C x H 2x N(R')) y --C x H 2x NHZ wherein Z is an alkyl- and hydroxy-substituted benzyl, the alkyl having 50 to 1000 carbon atoms; R' is hydrogen or Z with the proviso that at least one R' is hydrogen; n is 2 to 6; x is 2 or 3; and y is 1 to 5.
Inventors
- 👤 Bruce Hollis Garth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:35
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/234; C10L1/238; C10L1/2383
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
98 words
A gasoline additive composition comprising a combination of (i) from 60 to 75 weight percent of a diamine of the formula ZNHC n H 2n NHZ, and (ii) from 25 to 40 weight percent of a polyamine of the formula Z-NH(C x H 2x N(R')) y -C x H 2x NH-Z wherein Z is an alkyl- and hydroxy-substituted benzyl, the alkyl having 50 to 1000 carbon atoms; R' is hydrogen or Z with the proviso that at least one R' is hydrogen; n is 2 to 6; x is 2 or 3; and y is 1 to 5.
Claim 2
Dependent Claim
98 words
A gasoline additive composition comprising a combination of (i) from 60 to 75 weight percent of a diamine of the formula ZNHC n H 2n NHZ, and (ii) from 25 to 40 weight percent of a polyamine of the formula Z-NH(C x H 2x N(R')) y -C x H 2x NH-Z wherein Z is an alkyl- and hydroxy-substituted benzyl, the alkyl having 50 to 1000 carbon atoms; R' is hydrogen or Z with the proviso that at least one R' is hydrogen; n is 2 to 6; x is 2 or 3; and y is 1 to 5.
Claim 3
Dependent Claim
14 words
A composition according to claim 1 wherein Z has 50 to 200 carbon atoms.
Claim 4
Dependent Claim
34 words
A composition according to claim 2 wherein the alkyl in Z has 50 to 75 carbon atoms and wherein in Z at least 60% of the alkyl substituent is para to the hydroxyl substituent.
Claim 5
Dependent Claim
19 words
A composition according to claim 3 wherein n is 2, x is 2 and y is 1 to 4.
Claim 6
Dependent Claim
18 words
A composition according to claim 4 wherein y is 2 or 3 and wherein each R' is hydrogen.
Claim 7
Dependent Claim
34 words
A composition according to claim 1 wherein (i) is ZNHC 2 H 4 NHZ, and (ii) is ZNH(C 2 H 4 N(R')) y C 2 H 4 NHZ wherein y is 2 or 3.
Claim 8
Dependent Claim
10 words
A composition according to claim 6 wherein y is 2.
Claim 9
Dependent Claim
10 words
A composition according to claim 6 wherein y is 3.
Claim 10
Dependent Claim
16 words
A gasoline composition containing from 0.004 to 0.1 weight percent of the composition of claim 1.
Claim 11
Dependent Claim
19 words
A solution of the composition of claim 1 in a hydrocarbon solvent that boils in the gasoline boiling range.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |