US3074940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of enamines
Assignee: Monsanto Chemicals Ltd
•
Filing: 1959-09-02
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Granted: 1963-01-22
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Expires: 1979-09-02
Abstract
No abstract record available.
Inventors
- 👤 Erhard P Benzing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:24
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/02; C07D295/027; C07D295/03; C07D209/00; C07D209/02; C07D209/04; C07D209/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
24 words
IN A PROCESS FOR PREPARING ENAMINES COMPRISING REFLUXING A MIXTURE OF AN ALDEHYDE CAPABLE OF FORMING AN AZEOTROPE WITH WATER AND HAVING THE FORMULA
Claim 2
Dependent Claim
24 words
IN A PROCESS FOR PREPARING ENAMINES COMPRISING REFLUXING A MIXTURE OF AN ALDEHYDE CAPABLE OF FORMING AN AZEOTROPE WITH WATER AND HAVING THE FORMULA
Claim 3
Dependent Claim
48 words
IN A PROCESS FOR PREPARING ISOBUTENYLMORPHOLINE COMPRISING REFLUXING A MIXTURE OF ISOBUTYRALDEHYDE AND MORPHOLINE, THE IMPROVEMENT WHEREIN SAID ALDEHYDE IS PRESENT IN SAID MIXTURE IN EXCESS OF 1:1 MOLAR RATIO TO SAID AMINE AND THE REACTION WATER IS CONTINUOUSLY DISTILLED FROM THE REACTION MIXTURE AS A WATER-ALDEHYDE AZETROPE.
Claim 4
Dependent Claim
48 words
IN A PROCESS FOR PREPARING ISOBUTENYLMORPHOLINE COMPRISING REFLUXING A MIXTURE OF ISOBUTYRALDEHYDE AND MORPHOLINE, THE IMPROVEMENT WHEREIN SAID ALDEHYDE IS PRESENT IN SAID MIXTURE IN EXCESS OF 1:1 MOLAR RATIO TO SAID AMINE AND THE REACTION WATER IS CONTINUOUSLY DISTILLED FROM THE REACTION MIXTURE AS A WATER-ALDEHYDE AZETROPE.
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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |