US3233002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transalkylation and disproportionation of aromatics
Assignee: SINCLAR RES Inc
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Filing: 1962-03-08
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Granted: 1966-02-01
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Expires: 1982-03-08
Abstract
No abstract record available.
Inventors
- 👤 Stephen M Kovach
- 👤 Glenn O Michaels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:14
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/86; B01J23/868; B01J23/16; B01J23/24; B01J23/26; C; C07; C07C; C07C6/00; C07C6/08; C07C6/12; C07C6/123; C07C6/126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A PROCESS FOR TREATING POLYALKYL AROMATICS WHICH COMPRISES TREATING A POLYALKYL AROMATIC FEEDSTOCK UNDER TRANSMETHYLATION AND DISPROPORTIONATION CONDITIONS AT A TEMPERATURE BETWEEN ABOUT 400 TO 800*F. AND AT A PRESSURE BETWEEN ABOUT 0 TO 1000 P.S.G.I. IN THE PRESENCE OF FREE HYDROGEN, THE MOLE RATIO OF HYDROGEN TO POLYALKYL AROMATIC FEED BEING ABOUT 1:1 TO ABOUT 10:1, AND OF A CATALYST CONSISTING ESSENTIALLY OF ABOUT 1 TO 38 WEIGHT PERCENT CHROMIA, 1 TO 38 WEIGHT PERCENT ZINC OXIDE, AND ABOUT 1 TO 38 PERCENT COPPER OXIDE ON A SYNTHETIC GEL SILICA-ALUMINA SUPPORT, WITH THE PROVISO THAT THE TOTAL AMOUNT OF CHROMIOUM, ZINC OXIDE AND COPPER OXIDE IS ABOUT 20 TO 40 WEIGHT PERCENT OF THE CATALYST.
Claim 2
Dependent Claim
116 words
A PROCESS FOR TREATING POLYALKYL AROMATICS WHICH COMPRISES TREATING A POLYALKYL AROMATIC FEEDSTOCK UNDER TRANSMETHYLATION AND DISPROPORTIONATION CONDITIONS AT A TEMPERATURE BETWEEN ABOUT 400 TO 800*F. AND AT A PRESSURE BETWEEN ABOUT 0 TO 1000 P.S.G.I. IN THE PRESENCE OF FREE HYDROGEN, THE MOLE RATIO OF HYDROGEN TO POLYALKYL AROMATIC FEED BEING ABOUT 1:1 TO ABOUT 10:1, AND OF A CATALYST CONSISTING ESSENTIALLY OF ABOUT 1 TO 38 WEIGHT PERCENT CHROMIA, 1 TO 38 WEIGHT PERCENT ZINC OXIDE, AND ABOUT 1 TO 38 PERCENT COPPER OXIDE ON A SYNTHETIC GEL SILICA-ALUMINA SUPPORT, WITH THE PROVISO THAT THE TOTAL AMOUNT OF CHROMIOUM, ZINC OXIDE AND COPPER OXIDE IS ABOUT 20 TO 40 WEIGHT PERCENT OF THE CATALYST.
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) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |