US2749348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Making substituted pyridines
Assignee: Phillips Petroleum Co
•
Filing: 1952-01-03
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Granted: 1956-06-05
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Expires: 1972-01-03
Abstract
No abstract record available.
Inventors
- 👤 John E Mahan
- 👤 Charles E Stoops
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:18
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/08; C07D213/09; C07D213/10; C07D213/12; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
THE PROCESS FOR PREPARING ALKYL SUBSTITUTED PYRIDINES WHICH COMPRISES CONTACTING A CARBONYL COMPOUND OF 1 TO 6 CARBON ATOMS PER MOLECULE SELECTED FROM THE GROUP CONSISTING OF ALDEHYDES AND KETONES WITH AMMONIA AT A TEMPERATURE IN THE RANGE OF 300* TO 600* F. AND AT A PRESSURE SUFFICIENT TO MAINTAIN THE REACTION MIXTURE IN LIQUID PHASE, IN A REACTION MIXTURE TO WHICH HAS BEEN ADDED A CATALYST COMPRISING SULFONIC ACIDS CONTAINING NOT MORE THAN 10 CARBON ATOMS PER MOLECULE AND BEING SELECTED FROM THE GROUP CONSISTING OF ALKANE, CYCLOALKANE, AROMATIC, ALKYLAROMATIC, ARYLALKANE AND PYRIDINE SULFONIC ACIDS AND SALTS THEREOF WITH NITROGEN CONTAINING BASES.
Claim 2
Dependent Claim
103 words
THE PROCESS FOR PREPARING ALKYL SUBSTITUTED PYRIDINES WHICH COMPRISES CONTACTING A CARBONYL COMPOUND OF 1 TO 6 CARBON ATOMS PER MOLECULE SELECTED FROM THE GROUP CONSISTING OF ALDEHYDES AND KETONES WITH AMMONIA AT A TEMPERATURE IN THE RANGE OF 300* TO 600* F. AND AT A PRESSURE SUFFICIENT TO MAINTAIN THE REACTION MIXTURE IN LIQUID PHASE, IN A REACTION MIXTURE TO WHICH HAS BEEN ADDED A CATALYST COMPRISING SULFONIC ACIDS CONTAINING NOT MORE THAN 10 CARBON ATOMS PER MOLECULE AND BEING SELECTED FROM THE GROUP CONSISTING OF ALKANE, CYCLOALKANE, AROMATIC, ALKYLAROMATIC, ARYLALKANE AND PYRIDINE SULFONIC ACIDS AND SALTS THEREOF WITH NITROGEN CONTAINING BASES.
References Cited (Backward Citations)
FR521891A
Cited
US2615022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |