US4417903A
Expired / Lapsed
US
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Diesel fuel composition
Assignee: Ethyl Corp
•
Filing: 1982-10-15
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Granted: 1983-11-29
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Expires: 2002-10-15
Abstract
Abstract The cetane number of diesel fuel is increased by the addition of an aliphatic hydrocarbyl nitro nitrate additive such as 2-methyl-2-nitro-1-propanol nitrate (ester).
Inventors
- 👤 James B. Hinkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:02
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/40; C07D211/42; C07D211/44; C07D211/46; C07D307/00; C07D307/02; C07D307/04; C07D307/18; C10; C10L; C10L1/00; C10L1/02; C10L1/026; C10L1/10; C10L1/14; C10L1/22; C10L1/23; C10L1/231; C10L1/232; C10L1/233; C10L1/2335; F; F02; F02B; F02B1/00; F02B1/02; F02B1/04; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
68 words
Diesel fuel selected from the group consisting of liquid hydrocarbons of the diesel boiling range, alcohols, and mixtures thereof containing a cetane increasing amount of a primary nitrate ester having the structure ##STR2## wherein R' is an alkyl group containing 1-20 carbon atoms, R" is selected from the group consisting of hydrogen and alkyl groups containing 1-20 carbon atoms and n is an integer from 1 to 4.
Claim 2
Dependent Claim
68 words
Diesel fuel selected from the group consisting of liquid hydrocarbons of the diesel boiling range, alcohols, and mixtures thereof containing a cetane increasing amount of a primary nitrate ester having the structure ##STR2## wherein R' is an alkyl group containing 1-20 carbon atoms, R" is selected from the group consisting of hydrogen and alkyl groups containing 1-20 carbon atoms and n is an integer from 1 to 4.
Claim 3
Dependent Claim
18 words
A composition of claim 1 wherein said diesel fuel is a liquid hydrocarbon of the diesel boiling range.
Claim 4
Dependent Claim
9 words
A composition of claim 2 wherein n is 1.
Claim 5
Dependent Claim
9 words
A composition of claim 3 wherein R" is methyl.
Claim 6
Dependent Claim
11 words
A composition of claim 4 wherein said nitro-nitrate is 2-methyl-2-nitro-1-propanol nitrate.
Claim 7
Dependent Claim
11 words
A composition of claim 5 wherein said nitro-nitrate is 2-alkyl-2-nitro-1-propanol nitrate.
Claim 8
Dependent Claim
11 words
A composition of claim 6 wherein said nitro-nitrate is 2-methyl-2-nitro-1-propanol nitrate.
References Cited (Backward Citations)
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US3853944A
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US4227889A
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US4198931A
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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) | 1986-11-28 | 1987-05-30 | 1987-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-28 | 1991-05-30 | 1991-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-28 | 1995-05-30 | 1995-11-29 | $7700.00 | Window Closed / Lapsed |