US2734085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of salts from acetone-phenol mixtures
Assignee: —
•
Filing: —
•
Granted: 1956-02-07
•
Expires: 1973-02-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:53
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/08; C07C37/68; C07C37/70; C07C37/72; C07C45/00; C07C45/51; C07C45/53
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PROCESS FOR THE PRODUCTION OF PHENOL AND ACETONE WHICH COMPRISES DECOMPOSING A CUMENE HYDROPEROXIDE CONCENTRATED CONTAINING ABOUT 90% BY WEIGHT OF CUMENE HYDROPERIOXIDE AND SUBSTANTIALLY FREE OF CUMENE BY HEATING SAID CONCENTRATE IN THE PRESENCE OF AN ACID CATALYST, NEUTRALIZING THE DECOMPOSITION MIXTURE, MIXING WATER WITH THE NEUTRALIZED DECOMPOSITION MIXTURE IN AN AMOUNT SUFFICIENT TO FORM UPON SETTLING AN ORGANIC UPPER PHASE CONTAINING SUBSTANTIALLY ALL OF THE PHENOL AND ACETONE AND SOME WATER, AND AN AQUEOUS LOWER PHASE HAVING A VOLUME EQUAL TO AT LEAST 5% OF THE VOLUME OF SAID ORGANIC PHASE AND CONTAINING IN SOLUTION SUBSTANTIALLY ALL OF THE SALTS FORMED IN THE AFORESAID NEUTRALIZATION, AND SEPARATING SAID ORGANIC UPPER PHASE FROM SAID AQUEOUS LOWER PHASE.
Claim 2
Dependent Claim
119 words
A PROCESS FOR THE PRODUCTION OF PHENOL AND ACETONE WHICH COMPRISES DECOMPOSING A CUMENE HYDROPEROXIDE CONCENTRATED CONTAINING ABOUT 90% BY WEIGHT OF CUMENE HYDROPERIOXIDE AND SUBSTANTIALLY FREE OF CUMENE BY HEATING SAID CONCENTRATE IN THE PRESENCE OF AN ACID CATALYST, NEUTRALIZING THE DECOMPOSITION MIXTURE, MIXING WATER WITH THE NEUTRALIZED DECOMPOSITION MIXTURE IN AN AMOUNT SUFFICIENT TO FORM UPON SETTLING AN ORGANIC UPPER PHASE CONTAINING SUBSTANTIALLY ALL OF THE PHENOL AND ACETONE AND SOME WATER, AND AN AQUEOUS LOWER PHASE HAVING A VOLUME EQUAL TO AT LEAST 5% OF THE VOLUME OF SAID ORGANIC PHASE AND CONTAINING IN SOLUTION SUBSTANTIALLY ALL OF THE SALTS FORMED IN THE AFORESAID NEUTRALIZATION, AND SEPARATING SAID ORGANIC UPPER PHASE FROM SAID AQUEOUS LOWER PHASE.
References Cited (Backward Citations)
US1213465A
Cited
GB626095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-06 | 1959-08-08 | 1960-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-06 | 1963-08-08 | 1964-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-06 | 1967-08-08 | 1968-02-07 | $7700.00 | Window Closed / Lapsed |