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US2575404A
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Catalytic hydrogenation of acetophenone to phenyl methyl carbinol
Assignee: Union Carbide Corp
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Filing: 1949-04-26
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Granted: 1951-11-20
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Expires: 1969-04-26
Abstract
No abstract record available.
Inventors
- 👤 Howard R Guest
- 👤 Raymond W Mcnamee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:14
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/86; B01J23/868; C; C07; C07C; C07C29/00; C07C29/132; C07C29/136; C07C29/143; C07C29/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A METHOD FOR PRODUCING PHENYL METHYL CARBINOL BY REDUCTION OF ACETOPHENONE WHICH COMPRISES INTRODUCING HYDROGEN INTO ACETOPHENONE UNDER A PRESSURE OF AT LEAST 50 P.SI.I. AND AT A TEMPERATURE OF AT LEAST 125* C. IN THE PRESENCE OF A CATALYST AMOUNT OF AN IRON-COPPER-CHROMIUM MIXED OXIDES HYDROGENATION CATALYST IN WHICH COPPER AND CHROMIUM ARE PRESENT IN A RATIO COMPUTED ON A METAL BASIS, BY WEIGHT OF ABOUT 71 TO 109 PARTS OF COPPER AND ABOUT 8 TO 17 PARTS OF CHROMIUM PER 100 PARTS OF IRON, SAID CATALYST, UPON ACTIVATION, BEING CHARACTERIZED BY BEING MAGNETIC AND BY EXHIBITING LINES CORRESPONDING TO MAGNETIC OXIDE OF IRON, FE304; CUPROUS OXIDE, CU20; AND COPPER IN DIFFRACTION PATTERNS OBTAINED BY COBALT RADIATION.
Claim 2
Independent Claim
118 words
A METHOD FOR PRODUCING PHENYL METHYL CARBINOL BY REDUCTION OF ACETOPHENONE WHICH COMPRISES INTRODUCING HYDROGEN INTO ACETOPHENONE UNDER A PRESSURE OF AT LEAST 50 P.SI.I. AND AT A TEMPERATURE OF AT LEAST 125* C. IN THE PRESENCE OF A CATALYST AMOUNT OF AN IRON-COPPER-CHROMIUM MIXED OXIDES HYDROGENATION CATALYST IN WHICH COPPER AND CHROMIUM ARE PRESENT IN A RATIO COMPUTED ON A METAL BASIS, BY WEIGHT OF ABOUT 71 TO 109 PARTS OF COPPER AND ABOUT 8 TO 17 PARTS OF CHROMIUM PER 100 PARTS OF IRON, SAID CATALYST, UPON ACTIVATION, BEING CHARACTERIZED BY BEING MAGNETIC AND BY EXHIBITING LINES CORRESPONDING TO MAGNETIC OXIDE OF IRON, FE304; CUPROUS OXIDE, CU20; AND COPPER IN DIFFRACTION PATTERNS OBTAINED BY COBALT RADIATION.
References Cited (Backward Citations)
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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) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |