Patent US2568876A successfully refreshed from Google Patents.
US2568876A
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Reaction products of n-acylated polyalkylene-polyamines with alkenyl succinic acid anhydrides
Assignee: ExxonMobil Oil Corp
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Filing: 1949-11-14
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Granted: 1951-09-25
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Expires: 1969-11-14
Abstract
No abstract record available.
Inventors
- 👤 Ralph V White
- 👤 Henry D Norris
- 👤 Phillip S Landis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:10
CPC Classifications
C; C10; C10M; C10M133/00; C10M133/02; C10M133/16; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/221; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2205/00; C10M2205/14; C10M2205/16; C10M2205/17; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/023; C10M2207/026; C10M2207/04; C10M2207/08; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/34; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/04; C10M2211/042; C10M2211/06; C10M2211/08; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/22; C10M2215/223; C10M2215/224; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/047; C10N; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/135; C10N2040/20; C10N2040/22; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A CORROSION-INHIBITING COMPOSITION WHICH COMPRISES A SUBSTANTIALLY NEUTRAL VEHICLE CONTAINING BETWEEN ABOUT 0.001 PER CENT AND ABOUT 50 PER CENT BY WEIGHT OF THE REACTION PRODUCT OBTAINED BY REACTING MONOCARBOXYLIC ACID WITH A POLYALKYLENEPOLYAMINE HAVING ONE MORE NITROGEN ATOM PER MOLECULE THAN THERE ARE ALKYLENE GROUPS IN THE MOLECULE, IN A MOLAR PROPORTION VARYING BETWEEN ABOUT ONE AND ABOUT (X-1) TO ONE, RESPECTIVELY, WHEREIN X REPRESENTS THE NUMBER OF NITROGEN ATOMS IN THE POLYALKYLENEPOLYAMINE MOLECULE, TO PRODUCE AN INTERMEDIATE HYDRIDE WITH SAID INTERMEDIATE SUCCINIC ACID ANHYDRIDE WITH SAID INTERMEDIATE PRODUCT, IN A MOLAR PROPORTION VARYING BETWEEN ABOUT (X-1) AND ABOUT ONE TO ONE, RESPECTIVELY; THE SUM OF THE NUMBER OF MOLES OF SAID MONOCARBOXYLIC ACID AND OF SAID ALKENYL SUCCINIC ACID ANHYDRIDE REACTED WITH EACH MOLE OF SAID POLYALKYLENEPOLYAMINE BEING NO GREATER THAN X.
Claim 2
Dependent Claim
134 words
A CORROSION-INHIBITING COMPOSITION WHICH COMPRISES A SUBSTANTIALLY NEUTRAL VEHICLE CONTAINING BETWEEN ABOUT 0.001 PER CENT AND ABOUT 50 PER CENT BY WEIGHT OF THE REACTION PRODUCT OBTAINED BY REACTING MONOCARBOXYLIC ACID WITH A POLYALKYLENEPOLYAMINE HAVING ONE MORE NITROGEN ATOM PER MOLECULE THAN THERE ARE ALKYLENE GROUPS IN THE MOLECULE, IN A MOLAR PROPORTION VARYING BETWEEN ABOUT ONE AND ABOUT (X-1) TO ONE, RESPECTIVELY, WHEREIN X REPRESENTS THE NUMBER OF NITROGEN ATOMS IN THE POLYALKYLENEPOLYAMINE MOLECULE, TO PRODUCE AN INTERMEDIATE HYDRIDE WITH SAID INTERMEDIATE SUCCINIC ACID ANHYDRIDE WITH SAID INTERMEDIATE PRODUCT, IN A MOLAR PROPORTION VARYING BETWEEN ABOUT (X-1) AND ABOUT ONE TO ONE, RESPECTIVELY; THE SUM OF THE NUMBER OF MOLES OF SAID MONOCARBOXYLIC ACID AND OF SAID ALKENYL SUCCINIC ACID ANHYDRIDE REACTED WITH EACH MOLE OF SAID POLYALKYLENEPOLYAMINE BEING NO GREATER THAN X.
References Cited (Backward Citations)
US2194419A
Cited
US2374354A
Cited
US2355837A
Cited
US2473577A
Cited
US2490744A
Cited
US2540800A
Cited
US2475409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |