Patent US2665314A successfully refreshed from Google Patents.
US2665314A
Expired / Lapsed
US
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Selective chlorination of 2, 5-dichlorophenal to 2, 4, 5-trichlorophenol in the presence of 2, 4-dichlorophenal
Assignee: EIDP Inc
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Filing: 1951-04-04
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Granted: 1954-01-05
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Expires: 1971-04-04
Abstract
No abstract record available.
Inventors
- 👤 Karl W Krantz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:46
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN A PROCESS FOR SELECTIVELY CHLORINATING 2,5-DICHLOROPHENOL TO 2,4,5-TRICHLOROPHENOL IN THE PRESENCE OF 2,4-DICHLOROPHENOL TO OBTAIN A MIXTURE OF 2,4-DICHLOROPHENOL AND 2,4,5-TRICHLOROPHENOL, THE STEPS COMPRISING EFFECTING CHLORINATION BY INTRODUCING CHLORINE INTO A MIXTURE CONSISTING ESSENTIALLY OF MOLTEN 2,4-DICHLOROPHENOL AND MOLTEN 2,5-DICHLOROPHENOL AT A TEMPERATURE OF 40* C. TO 60* C., AND STOPPING THE INTRODUCTION OF CHLORINE INTO THE MIXTURE BEFORE THE TOTAL AMOUNT OF CHLORINE REACTED IN SAID CHLORINATION SUBSTANTIALLY EXCEEDS ONE MOL PER MOL OF 2,5-DICHLOROPHENOL IN SAID MIXTURE OF 2,4DICHLOROPHENOL AND 2,5-DICHLOROPHENOL.
Claim 2
Dependent Claim
84 words
IN A PROCESS FOR SELECTIVELY CHLORINATING 2,5-DICHLOROPHENOL TO 2,4,5-TRICHLOROPHENOL IN THE PRESENCE OF 2,4-DICHLOROPHENOL TO OBTAIN A MIXTURE OF 2,4-DICHLOROPHENOL AND 2,4,5-TRICHLOROPHENOL, THE STEPS COMPRISING EFFECTING CHLORINATION BY INTRODUCING CHLORINE INTO A MIXTURE CONSISTING ESSENTIALLY OF MOLTEN 2,4-DICHLOROPHENOL AND MOLTEN 2,5-DICHLOROPHENOL AT A TEMPERATURE OF 40* C. TO 60* C., AND STOPPING THE INTRODUCTION OF CHLORINE INTO THE MIXTURE BEFORE THE TOTAL AMOUNT OF CHLORINE REACTED IN SAID CHLORINATION SUBSTANTIALLY EXCEEDS ONE MOL PER MOL OF 2,5-DICHLOROPHENOL IN SAID MIXTURE OF 2,4DICHLOROPHENOL AND 2,5-DICHLOROPHENOL.
References Cited (Backward Citations)
US2010841A
Cited
US2440602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-04 | 1957-07-06 | 1958-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-04 | 1961-07-06 | 1962-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-04 | 1965-07-06 | 1966-01-05 | $7700.00 | Window Closed / Lapsed |