US3785790A
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Hydrocarbon fuel compositions
Assignee: Shell USA Inc
•
Filing: 1971-12-29
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Granted: 1974-01-15
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Expires: 1991-12-29
Abstract
Abstract Liquid hydrocarbon distillate fuel compositions, especially gasolines, containing mineral and organic acid salts of hydrocarbyl polyamides effectively nullify and/or inhibit fouling of vital parts of internal combustion engines.
Inventors
- 👤 A Strang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:31
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08F; C08F8/00; C08F8/44; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/143; C10L1/22; C10L1/234; C10L1/238; C10L1/2383; C10L1/24; C10L1/2431; C10L1/2437; C10L1/2462; C10L1/2475; C10L1/26; C10L1/2608; C10L1/2616; C10L1/2633; C10L1/2641; C10L1/2666; C10L1/2683; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/06; C10M2223/063
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
12 words
The composition of claim 1 in which the alkyl groups are methyl.
Claim 2
Dependent Claim
23 words
The composition of claim 1 in which the amount of the salt of the diamine is between 0.001 and 0.1 percent by weight.
Claim 3
Dependent Claim
109 words
Gasoline containing between 0.001 and 0.1 percent by weight of a mineral or organic acid salt of N''-polyisobutenyl-N,N-dimethylpropylene-1,3-diamine wherein the polyisobutenyl group has at least 50 and less than 200 carbon atoms and said acid is selected from the group consisting of sulfuric acid, phosphoric acid, aliphatic monocarboxylic acid of 6 to 20 carbon atoms, alpha,alpha-dialkyl monocarboxylic acid of 9 to 19 carbon atoms, alkyl-substituted aromatic sulfonic acid of 7 to 26 carbon atoms, salicylic acid, alkylsalicylic acid of at least one alkyl substituent of 14 to 18 carbon atoms, mono to dl C12-16 alkyl ester of phosphoric acid, and aryl phosphinic acid of 6 to 12 carbon atoms.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |