US3762873A
Expired / Lapsed
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Corrosion inhibiting method using substituted succinimides
Assignee: Baker Petrolite LLC
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Filing: 1971-02-16
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Granted: 1973-10-02
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Expires: 1991-02-16
Abstract
Abstract Substituted succinimides and derivatives thereof, formed by (1) reacting a hydrocarbon with a maleic compound or a derivative thereof to yield a hydrocarbon succinate and then (2) reacting the hydrocarbon succinate with an amine to form an imide; and to the uses of these hydrocarbon succinimides, for example in aqueous and/or oxygenated systems, as illustrated by aqueous brines such as in water flooding systems, cooling systems such as in cooling towers, auto radiator systems, etc., drilling muds, air drilling systems, etc., as corrosion and/or scale inhibitors, etc.
Inventors
- 👤 Alink B Oude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:50
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/30; C07D207/34; C07D207/36; C07D207/40; C07D207/404; C07D207/408; C07D207/412; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C02F5/12; C07C; C07C51/00; C07C51/347; C07C51/353; C07C57/00; C07C57/02; C07C57/13; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/14; C09K8/18; C09K8/22; C09K8/54; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/149; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
The process of claim 1 where the hydrocarbon group has 15 to 70 carbon atoms.
Claim 2
Dependent Claim
44 words
A process of inhibiting corrosion of metals and alloys in acidic aqueous media or acidic oxygenated aqueous media which comprises adding to said media a corrosion inhibiting amount of an imide of a hydrocarbon-substituted maleic compound wherein said hydrocarbon group is derived from polyisobutene.
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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |