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US4604103A
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Deposit control additives--polyether polyamine ethanes
Assignee: Chevron USA Inc
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Filing: 1985-12-16
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Granted: 1986-08-05
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Expires: 2005-12-16
Abstract
Abstract Additives for internal combustion engines are provided which in fuels maintain cleanliness of intake system without contributing to combustion chamber deposits. The additives are hydrocarbylopoly(oxyalkylene) polyamine ethanes comprising a hydrocarbyl-terminated poly(oxyalkylene) chain of 2-5 carbon oxyalkylene units bonded to an ethane or branched ethane chain in turn bonded to a nitrogen atom of a polyamine having from 2 to 12 amine nitrogens and from 2 to 40 carbon atoms with a carbon:nitrogen ratio between 1:1 and 10:1.
Inventors
- 👤 Curtis B. Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:08
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222; C10L1/2225; C10M; C10M133/00; C10M133/02; C10M133/04; C10M133/06; C10M133/08; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10N; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
91 words
A fuel composition comprising a major portion of hydrocarbon boiling in a gasoline range, and from 30 to about 10,000 ppm of hydrocarbyl polyoxyalkylene polyamine ethane of molecular weight from about 300 to about 2500 having the formula ##STR3## wherein R is hydrocarbyl of from 1 to about 30 carbon atoms; R' is selected from methyl and ethyl; x is an integer from 5 to 30; R" and R'" are independently selected from hydrogen and --CH 2 CH 2 NH-- y H wherein y is an integer from 0 to 5.
Claim 2
Dependent Claim
91 words
A fuel composition comprising a major portion of hydrocarbon boiling in a gasoline range, and from 30 to about 10,000 ppm of hydrocarbyl polyoxyalkylene polyamine ethane of molecular weight from about 300 to about 2500 having the formula ##STR3## wherein R is hydrocarbyl of from 1 to about 30 carbon atoms; R' is selected from methyl and ethyl; x is an integer from 5 to 30; R" and R'" are independently selected from hydrogen and --CH 2 CH 2 NH-- y H wherein y is an integer from 0 to 5.
Claim 3
Dependent Claim
24 words
A fuel composition according to claim 1 in which said hydrocarbyl polyoxyalkylene polyamine ethane has a molecular weight of about 800 to about 1500.
Claim 4
Dependent Claim
20 words
A fuel composition according to claim 2 in which said R is hydrocarbyl of from 2 to 20 carbon atoms.
Claim 5
Dependent Claim
31 words
A concentrate comprising an inert stable oleophilic organic solvent boiling in the range of 150° to 400° F. and from 10 to 50 weight percent of the compound of claim 1.
Claim 6
Dependent Claim
70 words
A hydrocarbyl polyoxyalkylene polyamine ethane of molecular weight from about 300 to about 2500 having the formula ##STR4## wherein R is hydrocarbyl of from 1 to about 30 carbon atoms; R' is selected from methyl and ethyl; x is an integer from 5 to 30; R" and R'" are independently selected from hydrogen and --CH 2 CH 2 NH-- y H wherein y is an integer from 0 to 5.
Claim 7
Dependent Claim
70 words
A hydrocarbyl polyoxyalkylene polyamine ethane of molecular weight from about 300 to about 2500 having the formula ##STR4## wherein R is hydrocarbyl of from 1 to about 30 carbon atoms; R' is selected from methyl and ethyl; x is an integer from 5 to 30; R" and R'" are independently selected from hydrogen and --CH 2 CH 2 NH-- y H wherein y is an integer from 0 to 5.
References Cited (Backward Citations)
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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) | 1989-08-04 | 1990-02-03 | 1990-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-04 | 1994-02-03 | 1994-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-04 | 1998-02-03 | 1998-08-05 | $7700.00 | Window Closed / Lapsed |