Patent CH312013A successfully refreshed from Google Patents.
US3944397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor fuel composition containing mannich condensation products
Assignee: EIDP Inc
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Filing: 1975-03-20
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Granted: 1976-03-16
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Expires: 1995-03-20
Abstract
Abstract A motor fuel composition comprising gasoline and benzyl polyamine of the formula ##EQU1## where Z is an alkyl- and hydroxy-substituted benzyl group wherein the alkyl group has 50-1000 carbon atoms and at least 60% of said alkyl group is para to the hydroxyl group, n is 2 to 3, R is hydrogen or Z, and the sum of a and b is 0 to 5, said polyamine being present in an amount sufficient to provide carburetor detergency. Also disclosed is a concentrated solution of said polyamine in a hydrocarbon solvent.
Inventors
- 👤 Robert A. Gardiner
- 👤 Bruce H. Garth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:38
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/234; C10L1/238; C10L1/2383; C08; C08F; C08F8/00; C08F8/30; C08F8/32; F; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
92 words
A motor fuel composition comprising a major amount of hydrocarbons boiling in the gasoline range and a minor amount, sufficient to provide detergency, of a benzyl polyamine of the formula ##EQU5## where Z is an alkyl- and hydroxy-substituted benzyl group wherein the alkyl group has 50 to 1000 carbon atoms and wherein at least 60% of said alkyl group is para to the hydroxyl group, n is 2 to 3, R is hydrogen or Z, a and b are 0 to 5 and the sum a + b is 0 to 5.
Claim 2
Dependent Claim
92 words
A motor fuel composition comprising a major amount of hydrocarbons boiling in the gasoline range and a minor amount, sufficient to provide detergency, of a benzyl polyamine of the formula ##EQU5## where Z is an alkyl- and hydroxy-substituted benzyl group wherein the alkyl group has 50 to 1000 carbon atoms and wherein at least 60% of said alkyl group is para to the hydroxyl group, n is 2 to 3, R is hydrogen or Z, a and b are 0 to 5 and the sum a + b is 0 to 5.
Claim 3
Dependent Claim
34 words
The motor fuel composition of claim 1, the benzyl polyamine having the formula wherein n is 2, a + b is 0 to 3 and the alkyl group has 50 to 100 carbon atoms.
Claim 4
Dependent Claim
12 words
The motor fuel composition of claim 2 wherein each R is H.
Claim 5
Dependent Claim
14 words
The motor fuel composition of claim 2 wherein at least one R is Z.
Claim 6
Dependent Claim
19 words
The motor fuel composition of claim 1 wherein said benzyl polyamine constitutes about 0.001-0.04% by weight of the composition.
Claim 7
Dependent Claim
26 words
An additive composition for addition to gasoline comprising from 10 to 90 percent by weight of the benzyl polyamine of claim 1 in a hydrocarbon solvent.
Claim 8
Dependent Claim
27 words
The additive composition of claim 6 wherein n is 2, a + b is 0 to 3 and the alkyl group has 50 to 100 carbon atoms.
Claim 9
Dependent Claim
11 words
The additive composition of claim 6 wherein each R is H.
Claim 10
Dependent Claim
13 words
The additive composition of claim 6 wherein at least one R is Z.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-16 | 1979-09-15 | 1980-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-16 | 1983-09-15 | 1984-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-16 | 1987-09-15 | 1988-03-16 | $7700.00 | Window Closed / Lapsed |