US2638449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction products of fatty acids, dialkanolamines, and alkenyl succinic acid anhydrides
Assignee: ExxonMobil Oil Corp
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Filing: 1949-12-30
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Granted: 1953-05-12
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Expires: 1969-12-30
Abstract
No abstract record available.
Inventors
- 👤 Ralph V White
- 👤 Henry D Norris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:44
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/145; C09; C09K; C09K5/00; C09K5/20; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/221; C10M; C10M133/00; C10M133/02; C10M2201/00; C10M2201/02; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/06; C10M2205/00; C10M2205/14; C10M2205/16; C10M2205/17; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/023; C10M2207/026; C10M2207/04; C10M2207/046; C10M2207/08; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2211/00; C10M2211/04; C10M2211/042; C10M2211/06; C10M2211/08; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/08; C10M2215/082; C10M2215/24; C10M2215/28; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/047; C10N; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/08; C10N2040/135; C10N2040/20; C10N2040/22; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A CORROSION-INHIBITING COMPOSITION WHICH COMPRISES A SUBSTANTIALLY NEUTRAL VEHICLE CONTAINING BETWEEN ABOUT 0.01 PER CENT AND ABOUT 50 PER CENT, BY WEIGHT, OF THE FINAL REACTION PRODUCT OBTAINED BY INITIALLY REACTING A FATTY ACID CONTAINING AT LEAST ABOUT FIVE CARBON ATOMS PER MOLECULE WITH A DIALKANOLAMINE HAVING BETWEEN TWO AND SEVEN CARBON ATOMS PER ALKANOL RADICAL, IN A MOLAR PROPORTION OF ABOUT 1:1, RESPECTIVELY, AT A TEMPERATURE OF BETWEEN ABOUT 130* C. AND ABOUT 160* C. TO PRODUCE AN INTERMEDIATE PRODUCT, AND THEN REACTING AN ALKENYL SUCCINIC ACID ANHYDRIDE WITH SAID INTERMEIDATE PRODUCT, IN A MOLAR PROPORTION VARYING BETWEEN ABOUT 1:1, RESPECTIVELY, AND ABOUT 2:1, RESPECTIVELY, AT A TEMPERATURE OF BETWEEN ABOUT 110* C. AND ABOUT 130* C.
Claim 2
Dependent Claim
118 words
A CORROSION-INHIBITING COMPOSITION WHICH COMPRISES A SUBSTANTIALLY NEUTRAL VEHICLE CONTAINING BETWEEN ABOUT 0.01 PER CENT AND ABOUT 50 PER CENT, BY WEIGHT, OF THE FINAL REACTION PRODUCT OBTAINED BY INITIALLY REACTING A FATTY ACID CONTAINING AT LEAST ABOUT FIVE CARBON ATOMS PER MOLECULE WITH A DIALKANOLAMINE HAVING BETWEEN TWO AND SEVEN CARBON ATOMS PER ALKANOL RADICAL, IN A MOLAR PROPORTION OF ABOUT 1:1, RESPECTIVELY, AT A TEMPERATURE OF BETWEEN ABOUT 130* C. AND ABOUT 160* C. TO PRODUCE AN INTERMEDIATE PRODUCT, AND THEN REACTING AN ALKENYL SUCCINIC ACID ANHYDRIDE WITH SAID INTERMEIDATE PRODUCT, IN A MOLAR PROPORTION VARYING BETWEEN ABOUT 1:1, RESPECTIVELY, AND ABOUT 2:1, RESPECTIVELY, AT A TEMPERATURE OF BETWEEN ABOUT 110* C. AND ABOUT 130* C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |