US3047643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of 2-phenylnaphthalene
Assignee: Beazer East Inc
•
Filing: 1960-06-14
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Granted: 1962-07-31
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Expires: 1980-06-14
Abstract
No abstract record available.
Inventors
- 👤 Ben B Corson
- 👤 Moe Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:16
CPC Classifications
C; C07; C07C; C07C15/00; C07C15/20; C07C15/24; C07C5/00; C07C5/32; C07C5/373; C07C5/393; C07C5/41; C07C5/412
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A PROCESS FOR THE PRODUCTION OF 2-PHENYLNAPHTHALENE COMPRISES DIMERIZING STYRENE IN THE PRESENCE OF A CATALYST TO FORM A MIXTURE OF LINEAR AND CYCLIC STYRENE DIMERS, SEPARATING SAID LINEAR AND CYCLIC STYRENE DIMERS, VAPORIZING SAID LINEAR STYRENE DIMER WITH WATER TO FORM A VAPOR MIXTURES OF SAID WATER AND SAID LINEAR STYRENE DIMER, PASSING SAID VAPOR MIXTURE OVER A METALLIC OXIDE DEHYDROGENATION CATALYST AT A TEMPERATURE OF AT LEAST 500*C. AND AN LHSV OF AT LEAST 0.2 TO DEHYDROCYCLIZE SAID LINEAR STYRENE DIMER TO 2-PHENYLNAPHTHALENE, CONDENSIONG SAID DEHYDROCYCLIZED VAPOR MIXTURE, SEPARATING SAID 2-PHENYLNAPHTHALENE AND SAID STYRENE DIMER, THEREFROM AND RECYCLING SAID SEPARATED STYRENE DIMER.
Claim 2
Dependent Claim
104 words
A PROCESS FOR THE PRODUCTION OF 2-PHENYLNAPHTHALENE COMPRISES DIMERIZING STYRENE IN THE PRESENCE OF A CATALYST TO FORM A MIXTURE OF LINEAR AND CYCLIC STYRENE DIMERS, SEPARATING SAID LINEAR AND CYCLIC STYRENE DIMERS, VAPORIZING SAID LINEAR STYRENE DIMER WITH WATER TO FORM A VAPOR MIXTURES OF SAID WATER AND SAID LINEAR STYRENE DIMER, PASSING SAID VAPOR MIXTURE OVER A METALLIC OXIDE DEHYDROGENATION CATALYST AT A TEMPERATURE OF AT LEAST 500*C. AND AN LHSV OF AT LEAST 0.2 TO DEHYDROCYCLIZE SAID LINEAR STYRENE DIMER TO 2-PHENYLNAPHTHALENE, CONDENSIONG SAID DEHYDROCYCLIZED VAPOR MIXTURE, SEPARATING SAID 2-PHENYLNAPHTHALENE AND SAID STYRENE DIMER, THEREFROM AND RECYCLING SAID SEPARATED STYRENE DIMER.
References Cited (Backward Citations)
US2590834A
Cited
US2901518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |