US3087976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making halogenated organic compounds
Assignee: Pennwalt Corp
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Filing: 1960-04-26
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Granted: 1963-04-30
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Expires: 1980-04-26
Abstract
No abstract record available.
Inventors
- 👤 Hauptschein Murray
- 👤 Arnold H Fainberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:03
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/02; B01J21/04; C; C07; C07C; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/37; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582; Y02P20/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A METHOD FOR CONVERTING MONOHYDROFLUOROCHLOROMETHANE STARTING MATERIAL SELECTED FROM THE CLASS CONSISTING OF CHCL2F AND CHDLF2 INTO A MONOHYDROMETHANE OF HIGHER FLUORINE CONTENT WHICH COMPRISES THE STEPS OF CONTACTING SAID STARTING MATERIAL AT A TEMPERATURE BETWEEN ABOUT 25*C. TO 600*C. WITH A CATALYST PREPARED BY REACTING ACTIVATED ALUMINA WITH A LOWER FLUOROCARBON HAVING NOT MORE THAN 1 HYDROCARBON ATOM, SAID REACTION BEING CARRIED OUT BY CONTACTING VAPORS OF SAID FLUOROCARBON WITH ACTIVATED ALUMINA AT A TEMPERATURE OF THE ORDER OF 150* C. TO 800*C SUFFICIENTLY HIGH TO INITIATE AN EXOTHERMIC REACTION BETWEEN SAID FLUOROCARBON AND SAID ALUMINA IN THE COURSE OF WHICH REACTION SAID FLUOROCARBON IS CONVERTED TO CARBON OXIDE AND SAID ALUMINA INCREASES IN WEIGHT DUE TO THE ASSOCIATION OF FLUORINE DERIVATED FROM SAID FLUOROCARBON THEREWITH, SAID CONTACTING AND THE REACTION BETWEEN SAID FLUOROCARBON AND SAID ALUMINA BEING CONTINUED UNTIL THE EVOLUTION OF CARBON OXIDE SUBSTANTIALLY CEASES, WHEREUPON THE THUS TREATED ALUMINA IS AN ACTIVE CATALYST FOR THE CONVERSION OF MONOHYDROFLUOROCHLOROMETHANES INTO MONOHYDROMETHANES OF HIGHER FLUORINE CONTENT.
Claim 2
Independent Claim
168 words
A METHOD FOR CONVERTING MONOHYDROFLUOROCHLOROMETHANE STARTING MATERIAL SELECTED FROM THE CLASS CONSISTING OF CHCL2F AND CHDLF2 INTO A MONOHYDROMETHANE OF HIGHER FLUORINE CONTENT WHICH COMPRISES THE STEPS OF CONTACTING SAID STARTING MATERIAL AT A TEMPERATURE BETWEEN ABOUT 25*C. TO 600*C. WITH A CATALYST PREPARED BY REACTING ACTIVATED ALUMINA WITH A LOWER FLUOROCARBON HAVING NOT MORE THAN 1 HYDROCARBON ATOM, SAID REACTION BEING CARRIED OUT BY CONTACTING VAPORS OF SAID FLUOROCARBON WITH ACTIVATED ALUMINA AT A TEMPERATURE OF THE ORDER OF 150* C. TO 800*C SUFFICIENTLY HIGH TO INITIATE AN EXOTHERMIC REACTION BETWEEN SAID FLUOROCARBON AND SAID ALUMINA IN THE COURSE OF WHICH REACTION SAID FLUOROCARBON IS CONVERTED TO CARBON OXIDE AND SAID ALUMINA INCREASES IN WEIGHT DUE TO THE ASSOCIATION OF FLUORINE DERIVATED FROM SAID FLUOROCARBON THEREWITH, SAID CONTACTING AND THE REACTION BETWEEN SAID FLUOROCARBON AND SAID ALUMINA BEING CONTINUED UNTIL THE EVOLUTION OF CARBON OXIDE SUBSTANTIALLY CEASES, WHEREUPON THE THUS TREATED ALUMINA IS AN ACTIVE CATALYST FOR THE CONVERSION OF MONOHYDROFLUOROCHLOROMETHANES INTO MONOHYDROMETHANES OF HIGHER FLUORINE CONTENT.
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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |