US2571901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chlorinating process
Assignee: Niagara Alkali Co
•
Filing: 1945-12-12
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Granted: 1951-10-16
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Expires: 1965-12-12
Abstract
No abstract record available.
Inventors
- 👤 Lawlor Francis Earl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:50
CPC Classifications
C; C07; C07B; C07B39/00; C08; C08F; C08F8/00; C08F8/18; C08F8/20; Y; Y10; Y10S; Y10S204/00; Y10S204/902; Y10S204/903; Y10S204/912; Y10S204/914
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A PROCESS OF SUBSTITUTION CHLORINATION OF AN ALIPHATIC CHLORINE-SOLUBLE SATURATED COMPOUND CONTAINING CHLORINE-REPLEACABLE HYDROGEN ATOMS ATTACHED TO CARBON, WHICH COMPRISES DISSOLVING SAID COMPOUND IN LIQUID CHLORINE IN AN AMOUNT IN SUBSTANTIAL EXCESS OF THE AMOUNT TO BE REACTED WITH SAID COMPOUND, SAID LIQUID CHLORINE IN EXCESS FUNCTIONING AS THE SOURCE OF CHLORINE FOR THE CHLORINATION REACTION AND AS A SOLVENT MEDIUM FOR THE COMPOUND DURING SAID REACTION; AT A TEMPERATURE AT WHICH HYDROGEN IS SUBSTITUTED BY CHLORINE WITH THE LIBERATION OF HYDROGEN CHLORIDE, AND AT A PRESSURE AT LEAST AS GREAT AS THAT REQUIRED TO MAINTAIN THE CHLORINE IN A LIQUID STATE AT SAID REACTION TEMPERATURE; CONTINUING THE REACTION UNDER THE ABOVE CONDITIONS UNTIL A PLURALITY OF SAID HYDROGEN ATOMS OF SAID COMPOUND HAVE BEEN REPLACED BY CHLORINE FROM SAID LIQUID CHLORINE REACTION MEDIUM; AND THEN REMOVING THE EXCESS UNREACTED LIQUID CHLORINE FROM THE CHLORINATED COMPOUND.
Claim 2
Dependent Claim
146 words
A PROCESS OF SUBSTITUTION CHLORINATION OF AN ALIPHATIC CHLORINE-SOLUBLE SATURATED COMPOUND CONTAINING CHLORINE-REPLEACABLE HYDROGEN ATOMS ATTACHED TO CARBON, WHICH COMPRISES DISSOLVING SAID COMPOUND IN LIQUID CHLORINE IN AN AMOUNT IN SUBSTANTIAL EXCESS OF THE AMOUNT TO BE REACTED WITH SAID COMPOUND, SAID LIQUID CHLORINE IN EXCESS FUNCTIONING AS THE SOURCE OF CHLORINE FOR THE CHLORINATION REACTION AND AS A SOLVENT MEDIUM FOR THE COMPOUND DURING SAID REACTION; AT A TEMPERATURE AT WHICH HYDROGEN IS SUBSTITUTED BY CHLORINE WITH THE LIBERATION OF HYDROGEN CHLORIDE, AND AT A PRESSURE AT LEAST AS GREAT AS THAT REQUIRED TO MAINTAIN THE CHLORINE IN A LIQUID STATE AT SAID REACTION TEMPERATURE; CONTINUING THE REACTION UNDER THE ABOVE CONDITIONS UNTIL A PLURALITY OF SAID HYDROGEN ATOMS OF SAID COMPOUND HAVE BEEN REPLACED BY CHLORINE FROM SAID LIQUID CHLORINE REACTION MEDIUM; AND THEN REMOVING THE EXCESS UNREACTED LIQUID CHLORINE FROM THE CHLORINATED COMPOUND.
References Cited (Backward Citations)
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US1315542A
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US1248065A
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US1939995A
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US2240275A
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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) | 1954-10-15 | 1955-04-16 | 1955-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-15 | 1959-04-16 | 1959-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-15 | 1963-04-16 | 1963-10-16 | $7700.00 | Window Closed / Lapsed |