Patent US2716142A successfully refreshed from Google Patents.
US2716142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of vinyl fluoride and catalyst therefor
Assignee: EIDP Inc
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Filing: 1952-07-21
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Granted: 1955-08-23
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Expires: 1972-07-21
Abstract
No abstract record available.
Inventors
- 👤 Benjamin F Skiles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:58
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; C; C07; C07C; C07C17/00; C07C17/07; C07C17/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
201 words
THE PROCESS WHICH COMPRISES HEATING A BED OF PARTICLES OF ZINC OXIDE TO A TEMPERATURE OF FROM ABOUT 65* C. TO ABOUT 200* C., FLOWING A GASEOUS MIXTURE OF HF AND NITROGEN THROUGH SUCH BED OF PARTICLES AT A RATE SUCH THAT THE HF INITIALLY IS SUBSTANTIALLY COMPLETELY REMOVED FROM THE GASEOUS MIXTURE BY THE BED PARTICLES, CONTINUING THE FLOW OF THE GASEOUS MIXTUE THROUGH THE BED WHILE MAINTAINING THE BED A TEMPERATURE OF FROM ABOUT 65* C. TO ABOUT 200* C. UNTIL FUMES OF HF APPEAR COPIOUSLY IN THE GASES PSSSING OUT OF THE BED, THEN DISCONTINUING THE FLOW OF THE GASEOUS MIXTURE THROUGH THE BED, THEN HEATING THE BED OF PARTICLES TO A TEMPERATURE OF FROM ABOUT 300* C. TO ABOUT 350* C. AND FLOWING A GASEOUS MIXTURE OF HF AND ACETYLENE IN A PROPORTION OF FROM ABOUT 2 TO ABOUT 5 MOLS OF HF TO EACH MOL OF ACETYLENE THROUGH SUCH BED AT A RATE OF FROM ABOUT 25 TO ABOUT 35 VOLUMES OF ACETYLENE PER VOLUME OF PARTICLES PER HOUR WHILE MAINTAINING THE BED AT A TEMPERATURE OF FROM ABOUT 300* C. TO ABOUT 350* C., AND SEPARATING VINYL FLUORIDE FROM THE GASEOUS MIXTURE LEAVING THE BED.
Claim 2
Dependent Claim
201 words
THE PROCESS WHICH COMPRISES HEATING A BED OF PARTICLES OF ZINC OXIDE TO A TEMPERATURE OF FROM ABOUT 65* C. TO ABOUT 200* C., FLOWING A GASEOUS MIXTURE OF HF AND NITROGEN THROUGH SUCH BED OF PARTICLES AT A RATE SUCH THAT THE HF INITIALLY IS SUBSTANTIALLY COMPLETELY REMOVED FROM THE GASEOUS MIXTURE BY THE BED PARTICLES, CONTINUING THE FLOW OF THE GASEOUS MIXTUE THROUGH THE BED WHILE MAINTAINING THE BED A TEMPERATURE OF FROM ABOUT 65* C. TO ABOUT 200* C. UNTIL FUMES OF HF APPEAR COPIOUSLY IN THE GASES PSSSING OUT OF THE BED, THEN DISCONTINUING THE FLOW OF THE GASEOUS MIXTURE THROUGH THE BED, THEN HEATING THE BED OF PARTICLES TO A TEMPERATURE OF FROM ABOUT 300* C. TO ABOUT 350* C. AND FLOWING A GASEOUS MIXTURE OF HF AND ACETYLENE IN A PROPORTION OF FROM ABOUT 2 TO ABOUT 5 MOLS OF HF TO EACH MOL OF ACETYLENE THROUGH SUCH BED AT A RATE OF FROM ABOUT 25 TO ABOUT 35 VOLUMES OF ACETYLENE PER VOLUME OF PARTICLES PER HOUR WHILE MAINTAINING THE BED AT A TEMPERATURE OF FROM ABOUT 300* C. TO ABOUT 350* C., AND SEPARATING VINYL FLUORIDE FROM THE GASEOUS MIXTURE LEAVING THE BED.
Claim 3
Dependent Claim
98 words
A CATALYST WHICH CONSISTS ESSENTIALLY OF THE REACTION PRODUCT OF HF WITH PARTICLE OF ZINC NITRATE OBTAINED BY PASSING A GASEOUS MIXTURE OF HF AND NITROGEN THROUGH A BED OF THE PARTICLES OF THE ZINC NITRATE AT A TEMPERATURE OF FROM ABOUT 65* C. TO ABOUT 200* C. AT A RATE OF FROM ABOUT 50 GRAMS TO ABOUT 100 GRAMS OF HF PER HOUR PER 400 CC. OF THE PARTICLES UNTIL FUMES OF HF APPEAR COPIOUSLY IN THE GASES PASSING OUT OF THE BED OF PARTICLES AND THEN DISCONTINUING THE FLOW OF THE GASEOUS MIXTURE THROUGH THE BED.
Claim 4
Dependent Claim
98 words
A CATALYST WHICH CONSISTS ESSENTIALLY OF THE REACTION PRODUCT OF HF WITH PARTICLE OF ZINC NITRATE OBTAINED BY PASSING A GASEOUS MIXTURE OF HF AND NITROGEN THROUGH A BED OF THE PARTICLES OF THE ZINC NITRATE AT A TEMPERATURE OF FROM ABOUT 65* C. TO ABOUT 200* C. AT A RATE OF FROM ABOUT 50 GRAMS TO ABOUT 100 GRAMS OF HF PER HOUR PER 400 CC. OF THE PARTICLES UNTIL FUMES OF HF APPEAR COPIOUSLY IN THE GASES PASSING OUT OF THE BED OF PARTICLES AND THEN DISCONTINUING THE FLOW OF THE GASEOUS MIXTURE THROUGH THE BED.
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) | 1958-08-22 | 1959-02-21 | 1959-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-22 | 1963-02-21 | 1963-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-22 | 1967-02-21 | 1967-08-23 | $7700.00 | Window Closed / Lapsed |