US4128403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel additive for distillate fuels
Assignee: Chevron USA Inc
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Filing: 1976-06-29
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Granted: 1978-12-05
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Expires: 1996-06-29
Abstract
Abstract A fuel additive is disclosed having improved rust-inhibiting properties and comprises (1) from 5 to 50 weight percent of a hydrocarbyl amine containing at least 1 hydrocarbyl group having a molecular weight between about 300 and 5000, (2) from 0.1 to 10 weight percent of a C 12 to C 30 hydrocarbyl succinic acid or anhydride, (3) from 0.1 to 10 weight percent of a demulsifier, and (4) 40 to 90 weight percent of an inert hydrocarbon solvent. A gasoline composition is also disclosed containing from 50 to 400 ppm of the above-identified fuel additive.
Inventors
- 👤 Lewis R. Honnen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:47
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/143; C10L1/16; C10L1/1616; C10L1/18; C10L1/188; C10L1/1881; C10L1/1883; C10L1/192; C10L1/198; C10L1/1983; C10L1/1985; C10L1/22; C10L1/222; C10L1/2222; C10L1/234; C10L1/238; C10L1/2383; C10L1/24; C10L1/2431; C10L1/2437; C10L1/26; C10L1/2633; C10L1/2658
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
68 words
A fuel additive comprising from 40 to 90 weight percent of an inert hydrocarbon solvent, from 5 to 50 weight percent of a hydrocarbyl amine having at least one hydrocarbyl group having a molecular weight between 300 and 5000, and 0.1 to 10 weight percent of a hydrocarbyl succinic acid or anhydride having from 12 to 30 carbons, and from 0.1 to 10 weight percent of a demulsifier.
Claim 2
Dependent Claim
68 words
A fuel additive comprising from 40 to 90 weight percent of an inert hydrocarbon solvent, from 5 to 50 weight percent of a hydrocarbyl amine having at least one hydrocarbyl group having a molecular weight between 300 and 5000, and 0.1 to 10 weight percent of a hydrocarbyl succinic acid or anhydride having from 12 to 30 carbons, and from 0.1 to 10 weight percent of a demulsifier.
Claim 3
Dependent Claim
25 words
The composition defined in claim 1 wherein the weight ratio of hydrocarbyl amine to alkenyl succinic acid or anhydride is between about 250 and 10.
Claim 4
Dependent Claim
13 words
The composition of claim 1 wherein the demulsifier is an alkoxy-modified methylene-bridged alkylphenol.
Claim 5
Dependent Claim
13 words
The composition of claim 1 wherein the demulsifier is an ammonium-neutralized sulfonated alkylphenol.
Claim 6
Dependent Claim
12 words
The composition of claim 1 wherein the demulsifier is an oxyalkylated glycol.
Claim 7
Dependent Claim
11 words
The composition of claim 1 in which the demulsifier is lecithin.
Claim 8
Dependent Claim
17 words
The composition defined in claim 1 wherein said hydrocarbyl succinic acid or anhydride is tetrapropenyl succinic acid.
Claim 9
Dependent Claim
27 words
The composition defined in claim 1 wherein said hydrocarbyl amine is a polybutene amine having a molecular weight in the polybutene portion of about 1000 to 2500.
Claim 10
Dependent Claim
65 words
A gasoline composition containing (1) a major portion of a gasoline fuel fraction, (2) from 50 to 800 ppm of a hydrocarbyl amine having at least 1 hydrocarbyl group with a molecular weight between 300 and 5000, (3) 0.5 to 20 ppm of a hydrocarbyl succinic acid or anhydride having from 12 to 30 carbons, and (4) from 2 to 10 ppm of a demulsifier.
Claim 11
Dependent Claim
65 words
A gasoline composition containing (1) a major portion of a gasoline fuel fraction, (2) from 50 to 800 ppm of a hydrocarbyl amine having at least 1 hydrocarbyl group with a molecular weight between 300 and 5000, (3) 0.5 to 20 ppm of a hydrocarbyl succinic acid or anhydride having from 12 to 30 carbons, and (4) from 2 to 10 ppm of a demulsifier.
Claim 12
Dependent Claim
15 words
The composition defined in claim 9 wherein said hydrocarbyl succinic acid is tetrapropylene succinic acid.
Claim 13
Dependent Claim
22 words
The composition defined in claim 9 wherein the ratio of the hydrocarbyl amine to alkenyl succinic acid is between 250 and 10.
Claim 14
Dependent Claim
26 words
The composition defined in claim 9 wherein the hydrocarbyl amine is a polybutene amine having a molecular weight in the polybutene portion of 1000 to 2500.
Claim 15
Dependent Claim
15 words
The composition of claim 9 in which the hydrocarbyl succinic anhydride is polybutene succinic acid.
Claim 16
Dependent Claim
14 words
The composition of claim 9 in which the demulsifier is an alkoxy-modified methylene-bridged alkylphenol.
Claim 17
Dependent Claim
14 words
The composition of claim 9 in which the demulsifier is an ammonium-neutralized sulfonated alkylphenol.
Claim 18
Dependent Claim
11 words
The composition of claim 9 in which the demulsifier is lecithin.
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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) | 1981-12-04 | 1982-06-05 | 1982-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-04 | 1986-06-05 | 1986-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-04 | 1990-06-05 | 1990-12-05 | $7700.00 | Window Closed / Lapsed |