US3767586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing stable aqueous solutions of n halo compounds
Assignee: Hoechst AG
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Filing: 1971-09-10
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Granted: 1973-10-23
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Expires: 1991-09-10
Abstract
Abstract A PROCESS FOR PREPARING STABLE CONCENTRATED AQUEOUS SOLUTIONS OF N-HALO COMPOUNDS, IN WHICH WATER AN N-HYDROGEN COMPOUND, A HALOGEN (BR2, CL2, ORI2) AN ALKALI OR ALKALINE EARTH HYDROXIDE, AND A BUFFERING COMPOUND ARE ADDED TO AND MIXED IN A REACTION VESSEL. THE BUFFER ESTABLISHES AND MAINTAINS A PH IN THE RANGE OF 4.5 TO 8.5, THEREBY PREVENTING RAPID DECOMPOSITION OF THE N-HALO COMPOUNDS WHICH OCCURS UNDER EXTREME ACID OR ALKALINE CONDITIONS. THE SOLUTIONS ARE USEFUL AS HOUSEHOLD AND INDUSTRIAL BLEACHES, AS SLIMICIDES, AND FOR OTHER PURPOSES.
Inventors
- 👤 A Rutkiewic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:38
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/087; C01B21/093; C01B21/096
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |