US2632773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of peroxidic compounds
Assignee: Hercules Powder Co
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Filing: 1952-03-11
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Granted: 1953-03-24
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Expires: 1972-03-11
Abstract
No abstract record available.
Inventors
- 👤 Armstrong Godfrey Paul
- 👤 Hall Reginald Harold
- 👤 Quin Denis Cheselden
- 👤 Turck Karl Heinrich Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:23
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/02; C07C409/04; C07C409/08; C07C409/10; C07C407/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A PROCESS FOR THE PRODUCTION OF ISOPROPYL BENZENE HYDROPEROXIDE WHICH COMPRISES CONTACTING A REACTION MIXTURE CONSISTING OF ISOPROPYL BENZENE AND ALKALI IN HOMOGENEOUS LIQUID PHASE WITH A GAS CONTAINING MOLECULAR OXYGEN AT A TEMPERATURE BETWEEN 70* AND 150* C., WHEREBY OXIDATION OF THE ISOPROPYL BENZENE TO ISOPROPYL BENZENE HYDROPEROXIDE TAKES PLACE, ADDING FRESH ISOPROPYL BENZENE TO THE REACTION MIXTURE WHILE THE OXIDATION PROCEEDS AND ADDING ALKALI IN AN AMOUNT SUFFICIENT TO NEUTRALIZE ANY CARBOXYLIC ACID FORMED DURING THE OXIDATION.
Claim 2
Dependent Claim
79 words
A PROCESS FOR THE PRODUCTION OF ISOPROPYL BENZENE HYDROPEROXIDE WHICH COMPRISES CONTACTING A REACTION MIXTURE CONSISTING OF ISOPROPYL BENZENE AND ALKALI IN HOMOGENEOUS LIQUID PHASE WITH A GAS CONTAINING MOLECULAR OXYGEN AT A TEMPERATURE BETWEEN 70* AND 150* C., WHEREBY OXIDATION OF THE ISOPROPYL BENZENE TO ISOPROPYL BENZENE HYDROPEROXIDE TAKES PLACE, ADDING FRESH ISOPROPYL BENZENE TO THE REACTION MIXTURE WHILE THE OXIDATION PROCEEDS AND ADDING ALKALI IN AN AMOUNT SUFFICIENT TO NEUTRALIZE ANY CARBOXYLIC ACID FORMED DURING THE OXIDATION.
References Cited (Backward Citations)
FR964006A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-23 | 1956-09-22 | 1957-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-23 | 1960-09-22 | 1961-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-23 | 1964-09-22 | 1965-03-24 | $7700.00 | Window Closed / Lapsed |