US2622105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for manufacture of benzene hexachloride
Assignee: Ethyl Corp
•
Filing: 1949-05-10
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Granted: 1952-12-16
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Expires: 1969-05-10
Abstract
No abstract record available.
Inventors
- 👤 Leo A Miller
- 👤 James H Dunn
- 👤 Clarence M Neher
- 👤 Stephen N Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:14
CPC Classifications
C; C07; C07C; C07C23/00; C07C23/02; C07C23/10; C07C23/12; C07C17/00; C07C17/013; C07C17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A CONTINUOUS PROCESS FOR THE MANUFACTURE OF BENZENE HEXACHLORIDE WHICH COMPRISES REACTING CHLORINE AND BENZENE TO FORM BENZENE HEXACHLORIDE DISSOLVED IN EXCESS BENZENE, TREATING THE RESULTING MATERIAL WITH AN AQUEOUS CAUSTIC SOLUTION MAINTAINED AT AT LEAST 3% CONCENTRATION TO NEUTRALIZE ACIDIC INGREDIENTS OF THIS MATERIAL, SETTING AN AQUEOUS LAYER FROM THE RESULTING NEUTRALIZED MIXTURE, SEPARATING SAID LAYER THEREFROM, THEN PASSING THE NEUTRALIZED BENZENE SOLUTION THROUGH A BED OF INERT FIBROUS MATERIAL TO COALESCE TRACES OF AQUEOUS MATERIAL REMAINING IN THE DECANTED SOLUTION AND SEPARATING THE SO-FORMED AQUEOUS DROPLETS THEREFROM BY A SECOND SETTLING AND DECANTING OPERATION.
Claim 2
Dependent Claim
96 words
A CONTINUOUS PROCESS FOR THE MANUFACTURE OF BENZENE HEXACHLORIDE WHICH COMPRISES REACTING CHLORINE AND BENZENE TO FORM BENZENE HEXACHLORIDE DISSOLVED IN EXCESS BENZENE, TREATING THE RESULTING MATERIAL WITH AN AQUEOUS CAUSTIC SOLUTION MAINTAINED AT AT LEAST 3% CONCENTRATION TO NEUTRALIZE ACIDIC INGREDIENTS OF THIS MATERIAL, SETTING AN AQUEOUS LAYER FROM THE RESULTING NEUTRALIZED MIXTURE, SEPARATING SAID LAYER THEREFROM, THEN PASSING THE NEUTRALIZED BENZENE SOLUTION THROUGH A BED OF INERT FIBROUS MATERIAL TO COALESCE TRACES OF AQUEOUS MATERIAL REMAINING IN THE DECANTED SOLUTION AND SEPARATING THE SO-FORMED AQUEOUS DROPLETS THEREFROM BY A SECOND SETTLING AND DECANTING OPERATION.
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) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |