US2680138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing tertiarybutylisopropylbenzene hydroperoxide
Assignee: Phillips Petroleum Co
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Filing: 1949-11-25
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Granted: 1954-06-01
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Expires: 1969-11-25
Abstract
No abstract record available.
Inventors
- 👤 John E Wicklatz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:01
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/02; C07C409/04; C07C409/08; C07C407/00; C07C407/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A PROCESS FOR PRODUCING TERT-BUTYLISOPROPYLBENZENE HYDROPEROXIDE WHICH COMPRISES PASSING TERT-BUTYLISOPROPYLBENZENE ADMIXED WITH ABOUT 4.6 GRAMS OF THE POTASSIUM SALT OF DIISOPROPYLBENZENE HYDROPEROXIDE PER LITER OF SAID TERT-BUTYLISOPROPYLBENZENE TO AN OXIDATION ZONE, ADDING AN OXYGEN-CONTAINING MEDIUM TO SAID ZONE, MAINTAINING SAID ZONE AT A TEMPERATURE OF ABOUT 257* F., PASSING THE RESULTING OXIDIZED EFFLUENT FROM SAID ZONE AT A SEPARATION ZONE, ADMIXING AN EQUAL VOLUME OF N-PENTANE WITH SAID OXIDATION EFFLUENT, COOLING THE LAST SAID MIXTURE TO A TEMPERATURE OF ABOUT MINUS 40* F., FILTERING THE THUS FORMED CRYSTALS OF TERTBUTYLISOPROPYLBENZENE HYDROPEROXIDE FROM THE REMAINDER OF THE MIXTURE, WASHING SAID SEPARATED CRYSTALS WITH ADDITIONAL N-PENTANE AND DRYING THE RESULTING SUBSTANTIALLY PURE CRYSTALDINE TERT-BUTYLISOPROPYLBENZENE HYDROPEROXIDE.
Claim 2
Dependent Claim
113 words
A PROCESS FOR PRODUCING TERT-BUTYLISOPROPYLBENZENE HYDROPEROXIDE WHICH COMPRISES PASSING TERT-BUTYLISOPROPYLBENZENE ADMIXED WITH ABOUT 4.6 GRAMS OF THE POTASSIUM SALT OF DIISOPROPYLBENZENE HYDROPEROXIDE PER LITER OF SAID TERT-BUTYLISOPROPYLBENZENE TO AN OXIDATION ZONE, ADDING AN OXYGEN-CONTAINING MEDIUM TO SAID ZONE, MAINTAINING SAID ZONE AT A TEMPERATURE OF ABOUT 257* F., PASSING THE RESULTING OXIDIZED EFFLUENT FROM SAID ZONE AT A SEPARATION ZONE, ADMIXING AN EQUAL VOLUME OF N-PENTANE WITH SAID OXIDATION EFFLUENT, COOLING THE LAST SAID MIXTURE TO A TEMPERATURE OF ABOUT MINUS 40* F., FILTERING THE THUS FORMED CRYSTALS OF TERTBUTYLISOPROPYLBENZENE HYDROPEROXIDE FROM THE REMAINDER OF THE MIXTURE, WASHING SAID SEPARATED CRYSTALS WITH ADDITIONAL N-PENTANE AND DRYING THE RESULTING SUBSTANTIALLY PURE CRYSTALDINE TERT-BUTYLISOPROPYLBENZENE HYDROPEROXIDE.
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) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |