US4270930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clean combustion chamber fuel composition
Assignee: Chevron USA Inc
•
Filing: 1979-12-21
•
Granted: 1981-06-02
•
Expires: 1999-12-21
Abstract
Abstract A fuel composition for gasoline engines which keeps combustion chambers clean, does not contribute to octane requirement increase and even serves to decrease the octane requirements of an engine which has undergone octane requirement increase while operating on other fuel compositions. The fuel composition comprises a major amount of gasoline and at least 0.4 weight percent of a hydrocarbyl poly(oxyalkylene) aminocarbamate.
Inventors
- 👤 Curtis B. Campbell
- 👤 Richard J. Peyla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:39
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/224; F; F02; F02B; F02B77/00; F02B77/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
56 words
A fuel composition comprising a major amount of hydrocarbons boiling in the gasoline range and from 0.3 to 3 percent by weight of a hydrocarbyl poly(oxyalkylene) aminocarbamate of molecular weight from about 600 to about 10,000 having at least one basic nitrogen atom, and wherein said hydrocarbyl group contains from 1 to about 30 carbon atoms.
Claim 2
Dependent Claim
56 words
A fuel composition comprising a major amount of hydrocarbons boiling in the gasoline range and from 0.3 to 3 percent by weight of a hydrocarbyl poly(oxyalkylene) aminocarbamate of molecular weight from about 600 to about 10,000 having at least one basic nitrogen atom, and wherein said hydrocarbyl group contains from 1 to about 30 carbon atoms.
Claim 3
Dependent Claim
25 words
The fuel composition of claim 1 in which at least one basic nitrogen atom in said aminocarbamate is in a primary or secondary amino group.
Claim 4
Dependent Claim
41 words
The fuel composition of claim 1 in which each said oxyalkylene units is selected from 2 to 5 carbon oxyalkylene units of which at least a sufficient number are branched-chain oxyalkylene units to render said carbamate soluble in said fuel composition.
Claim 5
Dependent Claim
13 words
The fuel composition of claim 3 in which said oxyalkylene units are oxybutylene.
Claim 6
Dependent Claim
15 words
The fuel composition of claim 1 in which said hydrocarbyl group is an alkylphenyl group.
Claim 7
Dependent Claim
17 words
The fuel composition of claim 5 in which the alkyl in said alkylphenyl group is propylene tetramer.
Claim 8
Dependent Claim
40 words
The fuel composition of claim 1 wherein the amine moiety of said aminocarbamate is derived from polyamine having from 2 to 12 amine nitrogen atoms and from 2 to 40 carbon atoms with a carbon:nitrogen ratio between 1:1 and 10:1.
Claim 9
Dependent Claim
41 words
The fuel composition of claim 7 in which said polyamine is a polyalkylene polyamine wherein the alkylene group contains from 2 to 6 carbon atoms and the polyamine contains 2 to 12 amine nitrogen atoms and 2 to 24 carbon atoms.
Claim 10
Dependent Claim
27 words
The fuel composition of claim 8 in which said polyalkylene polyamine is selected from the group consisting of ethylene diamine, polyethylene polyamine, propylene diamine and polypropylene polyamine.
Claim 11
Dependent Claim
19 words
The fuel composition of claim 1 in which said hydrocarbyl poly(oxyalkylene) aminocarbamate is selected from butylpoly(oxypropylene)-N-(2-aminoethyl)carbamate and alkylphenyl poly(oxyisobutylene)-N-(2-aminoethyl)carbamate.
References Cited (Backward Citations)
US4160648A
Cited
US4197409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-06-01 | 1984-12-01 | 1985-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-01 | 1988-12-01 | 1989-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-01 | 1992-12-01 | 1993-06-02 | $7700.00 | Window Closed / Lapsed |