US2810760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of crotonaldehyde
Assignee: Escambia Chemical Corp
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Filing: 1953-01-02
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Granted: 1957-10-22
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Expires: 1973-01-02
Abstract
No abstract record available.
Inventors
- 👤 Jr James F Gabbett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:53
CPC Classifications
C; C07; C07C; C07C47/00; C07C47/20; C07C47/21; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/72; C07C45/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PROCESS FOR THE PRODUCTION OF CROTONALDEHYDE WHICH COMPRISES PASSING A GASEOUS MIXTURE OF WATER AND ACETALDEHYDE WITH A MOLAR RATIO OF LESS THAN 3.5 TO 1, BUT GREATER THAN 1.5 TO 1, THROUGH A REACTION ZONE MAINAT A PRESSURE ON THE ORDER OF ATMOSPHERIC AND ABOVE, SAID GASEOUS MIXTURE REACTING IN THE PRESENCE OF A MIXED POROUS CATALYST CONSISTING OF 95 PERCENT BY WEIGHT OF MAGNESIUM OXIDE AND 5 PERCENT BY WEIGHT OF A MIXTURE OF TANTALUM OXIDES, RECOVERING THE CROTONALDEHYDE AND RECYCLING THE UNREACTED ACETALDEHYDE.
Claim 2
Dependent Claim
87 words
A PROCESS FOR THE PRODUCTION OF CROTONALDEHYDE WHICH COMPRISES PASSING A GASEOUS MIXTURE OF WATER AND ACETALDEHYDE WITH A MOLAR RATIO OF LESS THAN 3.5 TO 1, BUT GREATER THAN 1.5 TO 1, THROUGH A REACTION ZONE MAINAT A PRESSURE ON THE ORDER OF ATMOSPHERIC AND ABOVE, SAID GASEOUS MIXTURE REACTING IN THE PRESENCE OF A MIXED POROUS CATALYST CONSISTING OF 95 PERCENT BY WEIGHT OF MAGNESIUM OXIDE AND 5 PERCENT BY WEIGHT OF A MIXTURE OF TANTALUM OXIDES, RECOVERING THE CROTONALDEHYDE AND RECYCLING THE UNREACTED ACETALDEHYDE.
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) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |