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US3795495A
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Gasoline anti-icing additives
Assignee: Union Oil Company of California
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Filing: 1971-01-20
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Granted: 1974-03-05
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Expires: 1991-01-20
Abstract
Abstract A combination of two specific types of known gasoline additives is found to provide, in addition to good overall carburetor detergency, a synergistic degree of anti-icing activity. One additive is an alkyl aminoalkyl phosphate, while the other is a succinimide condensation product of an alkylene polyamine wit an alkenyl succinic anhydride.
Inventors
- 👤 W Howland
- 👤 W Mallett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:05
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/143; C10L1/22; C10L1/222; C10L1/224; C10L1/234; C10L1/238; C10L1/2383; C10L1/26; C10L1/2633; C10L1/2641
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
22 words
A composition as defined in claim 1 wherein the weight-ratio of component 1 to component 2 is between about 20/80 and 60/40.
Claim 2
Dependent Claim
25 words
between about 5 and 30 pounds per thousand barrels of a succinimide condensation product of one mole of an alkenyl succinic anhydride of the formula:
Claim 3
Dependent Claim
15 words
a succinimide condensation product of one mole of an alkenyl succinic anhydride of the formula:
Claim 4
Dependent Claim
14 words
A composition as defined in claim 1 wherein said alkylene polyamine is diethylene triamine.
Claim 5
Dependent Claim
30 words
A composition as defined in claim 1 wherein the combined proportion of said components 1 and 2 in the gasoline is between about 13.5 and 20 pounds per thousand barrels.
Claim 6
Dependent Claim
22 words
A composition as defined in claim 1 wherein said base gasoline has a 50 percent boiling point between about 180* and 220*F.
Claim 7
Dependent Claim
69 words
A composition as defined in claim 1 wherein the weight-ratio of component 1 to component 2 is between about 20/80 and 60/40; said alkylene polyamine is ethylene diamine or diethylene triamine; the combined proportion of said components 1 and 2 in the gasoline is between about 13.5 and 20 pounds per thousand barrels; and wherein said base gasoline has a 50 percent boiling point between about 180* and 220*F.
Claim 8
Dependent Claim
7 words
A synergistic anti-icing additive for gasoline comprising:
Claim 9
Dependent Claim
14 words
An additive as defined in claim 7 including in addition a paraffinic lubricating oil.
Claim 10
Dependent Claim
21 words
An additive as defined in claim 7 wherein said component 2 has an average molecular weight between about 400 and 800.
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) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |