US2501708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of butyraldehyde
Assignee: Distillers Co Yeast Ltd
•
Filing: 1946-06-19
•
Granted: 1950-03-28
•
Expires: 1966-06-19
Abstract
No abstract record available.
Inventors
- 👤 Bewley Thomas
- 👤 Keeble John Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:05
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/61; C07C45/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PROCESS FOR THE MANUFACTURE OF BUTYRALDEHYDE BY THE CATALYTIC HYDROGENATION OF CROTONALDEHYDE IN THE LIQUID PHASE IN THE PRESENCE OF A NICKEL CATALYST, WHICH COMPRISES HYDROGENATING WET CROTONALDEHYDE AT A TEMPERATURE NOT IN EXCESS OF 60*C. IN THE PRESENCE OF AN ADDED INERT MUTUAL SOLVENT FOR WATER, CROTONALDEHYDE AND BUTYRALDEHYDE, SAID WET CROTONALDEHYDE CONTAINING MORE WATER THAN COULD BE RETAINED IN SOLUTION IN THE FINAL LIQUID REACTION MIXTURE IN THE ABSENCE OF SAID MUTUAL SOLVENT AND SAID MUTUAL SOLVENT BEING PRESENT IN AN AMOUNT AT LEAST SUFFICIENT TO MAINTAIN THE LIQUID REACTION MIXTURE HOMOGENEOUS THROUGHOUT THE REACTION.
Claim 2
Dependent Claim
98 words
A PROCESS FOR THE MANUFACTURE OF BUTYRALDEHYDE BY THE CATALYTIC HYDROGENATION OF CROTONALDEHYDE IN THE LIQUID PHASE IN THE PRESENCE OF A NICKEL CATALYST, WHICH COMPRISES HYDROGENATING WET CROTONALDEHYDE AT A TEMPERATURE NOT IN EXCESS OF 60*C. IN THE PRESENCE OF AN ADDED INERT MUTUAL SOLVENT FOR WATER, CROTONALDEHYDE AND BUTYRALDEHYDE, SAID WET CROTONALDEHYDE CONTAINING MORE WATER THAN COULD BE RETAINED IN SOLUTION IN THE FINAL LIQUID REACTION MIXTURE IN THE ABSENCE OF SAID MUTUAL SOLVENT AND SAID MUTUAL SOLVENT BEING PRESENT IN AN AMOUNT AT LEAST SUFFICIENT TO MAINTAIN THE LIQUID REACTION MIXTURE HOMOGENEOUS THROUGHOUT THE REACTION.
References Cited (Backward Citations)
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US1730587A
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US1788896A
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US2042303A
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US2150158A
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US2150270A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-27 | 1953-09-26 | 1954-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-27 | 1957-09-26 | 1958-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-27 | 1961-09-26 | 1962-03-28 | $7700.00 | Window Closed / Lapsed |