Patent US3269999A successfully refreshed from Google Patents.
US3269999A
Expired / Lapsed
US
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Corrosion inhibitors from amine residue
Assignee: Texaco Inc
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Filing: 1962-02-27
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Granted: 1966-08-30
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Expires: 1982-02-27
Abstract
No abstract record available.
Inventors
- 👤 Howard V Moore
- 👤 Norman B Godfrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:47
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/18; C07D295/182; C07D233/00; C07D233/04; C07D233/06; C07D233/08; C07D233/12; C07D233/14; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/221; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/149
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A METHOD FOR PREPARING A POLYAMINE COMPOSITION WHICH COMPRISES REACTING AN AMINE RESIDUE DEFINED HEREBELOW WITH AN ALIPHATIC HYDROCARBYL CARBOXYLIC ACID AT A TEMPERATURE IN THE RANGE OF 120* TO 130*C. TO FORM AN AMINE RESIDUE-ACID CONDENSATION PRODUCT, SAID AMINE RESIDUE BEING OBTAINED BY REACTING MONOETHANOLAMINE WITH AMMONIA AT A TEMPERATURE IN THE RRANGE OF 150* TO 400* C. AND A PRESSURE OF 30 TO 400 ATMOSPHERES IN HE PRESENCE OF HYDROGEN AND HYROGENATION CATALYST SELECTED FROM THE GROUP CONSISTING OF THE METALS AND OXIDES OF COPPER, NICKEL AND COBALT AND CHROMIUM OXIDE TO FORM A REACTION PRODUCT AND SUBJECTING SAID REACTION PRODUCT TO DISTILLATION AT ABOUT 150*C. UNDER 50 MM. OF MERCURY PRESSURE ABSOLUTE TO REMOVE THE LOW-BOILING PRODUCTS AND RECOVER A HIGH-BOILING AMINE COMPOSITION AS SAID AMINE RESIDUE.
Claim 2
Independent Claim
130 words
A METHOD FOR PREPARING A POLYAMINE COMPOSITION WHICH COMPRISES REACTING AN AMINE RESIDUE DEFINED HEREBELOW WITH AN ALIPHATIC HYDROCARBYL CARBOXYLIC ACID AT A TEMPERATURE IN THE RANGE OF 120* TO 130*C. TO FORM AN AMINE RESIDUE-ACID CONDENSATION PRODUCT, SAID AMINE RESIDUE BEING OBTAINED BY REACTING MONOETHANOLAMINE WITH AMMONIA AT A TEMPERATURE IN THE RRANGE OF 150* TO 400* C. AND A PRESSURE OF 30 TO 400 ATMOSPHERES IN HE PRESENCE OF HYDROGEN AND HYROGENATION CATALYST SELECTED FROM THE GROUP CONSISTING OF THE METALS AND OXIDES OF COPPER, NICKEL AND COBALT AND CHROMIUM OXIDE TO FORM A REACTION PRODUCT AND SUBJECTING SAID REACTION PRODUCT TO DISTILLATION AT ABOUT 150*C. UNDER 50 MM. OF MERCURY PRESSURE ABSOLUTE TO REMOVE THE LOW-BOILING PRODUCTS AND RECOVER A HIGH-BOILING AMINE COMPOSITION AS SAID AMINE RESIDUE.
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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |