Patent US2003197A successfully refreshed from Google Patents.
US2575403A
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Catalytic hydrogenation of acetophenone to phenyl methyl carbinol
Assignee: Union Carbide Corp
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Filing: 1947-06-14
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Granted: 1951-11-20
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Expires: 1967-06-14
Abstract
No abstract record available.
Inventors
- 👤 Donald M Young
- 👤 Jr Frank G Young
- 👤 Howard R Guest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:48
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/132; C07C29/136; C07C29/143; C07C29/145; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/86; B01J23/868; B01J23/90; B01J23/94; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
THE IMPROVMENT OF THE ART OF HYDROGENATING ACETOPHENONE WHICH CONSISTS IN PRODUCING PHENYL METHYL CARBINOL TO THE SUBSTANTIAL EXCLUSION OF ETHYL BENZENE OR OTHER SIDE REACTION PRODUCTS BY CARRYING OUT THE HYDROGENATION UNDER A HYDROGEN PRESSURE OF ABOUT 50 TO 200 POUNDS PER SQUARE INCH, GAGE, AND A TEMPERATURE OF ABOUT 120* TO 200* C. IN THE PRESENCE OF A CATALYTIC AMOUNT OF A COPPER-CHROMIUM MIXED OXIDES HYDROGENATION CATALYST IN WHICH CHROMIUM IS PRESENTIN A RATIO COMPUTED ON A METAL BASIS, FROM ABOUT 7 TO 25 PARTS OF CHROMIUM PER 100 PARTS OF COPPER BY WEIGHT.
Claim 2
Dependent Claim
96 words
THE IMPROVMENT OF THE ART OF HYDROGENATING ACETOPHENONE WHICH CONSISTS IN PRODUCING PHENYL METHYL CARBINOL TO THE SUBSTANTIAL EXCLUSION OF ETHYL BENZENE OR OTHER SIDE REACTION PRODUCTS BY CARRYING OUT THE HYDROGENATION UNDER A HYDROGEN PRESSURE OF ABOUT 50 TO 200 POUNDS PER SQUARE INCH, GAGE, AND A TEMPERATURE OF ABOUT 120* TO 200* C. IN THE PRESENCE OF A CATALYTIC AMOUNT OF A COPPER-CHROMIUM MIXED OXIDES HYDROGENATION CATALYST IN WHICH CHROMIUM IS PRESENTIN A RATIO COMPUTED ON A METAL BASIS, FROM ABOUT 7 TO 25 PARTS OF CHROMIUM PER 100 PARTS OF COPPER BY WEIGHT.
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 |