US3341297A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production and recovery of aqueous hydrogen peroxide solutions
Assignee: Celanese Corp
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Filing: 1964-02-26
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Granted: 1967-09-12
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Expires: 1984-02-26
Abstract
No abstract record available.
Inventors
- 👤 Alexander F Maclean
- 👤 Adin L Stautzenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:16
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/01; C01B15/022; C01B15/013; C07; C07C; C07C407/00; C07C407/003
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
103 words
PROCESS FOR THE PRODUCTION OF AQUEOUS HYDROGEN PEROXIDE WHICH COMPRISES BRINGING A FEED MIXTURE OF PERACETIC ACID AND SUFFICIENT WATER TO CONVERT AT LEAST 50% OF SAID PERACETIC ACID, BY REACTION WITH WATER, TO HYDROGEN PEROXIDE TO CONTACT WITH A SOLID ACID CATION-EXCHANGE RESIN CATALYST TO EFFECT THE REACTION OF WATER AND PERACETIC ACID WHEREBY AT LEAST 50% OF SAID PERACETIC ACID IS CONVERTED TO HYDROGEN PEROXIDE AND ACETIC ACID; SEPARATING SAID CATALYST FROM THE REACTION MIXTURE; PARTIALLY RECOVERING SAID REACTION MIXTURE BY SUBATMOSPHERIC AZEOTROPIC DISTILLATION TO PRODUCE A PERACETIC ACID-WATER AZEOTROPIC DISTILLATE, AND RECOVERING AQUEOUS HYDROGEN PEROXIDE FROM THE THUS-DISTILLED REACTION MIXTURE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |