US3287394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic synthesis of unsaturated nitriles
Assignee: Eastman Kodak Co
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Filing: 1965-09-30
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Granted: 1966-11-22
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Expires: 1985-09-30
Abstract
No abstract record available.
Inventors
- 👤 Howard S Young
- 👤 Edgar L Mcdaniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:06
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/24; C07C253/26; B; B01; B01J; B01J27/00; B01J27/14; B01J27/186; B01J27/188; B01J27/19; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A PROCESS FOR PREPARING ACRYLONITRIL OR METHACRYLONITRILE WHICH COMPRISES REACTING A MIXTURE CONTAINING AN OLEFIN FROM THE GROUP OF PROPYLENE OR ISOBUTYLENE, RESPECTIVELY, AMMONIA AND OXYGEN; SAID MIXTURE CONTAINING ABOUT 0.1 TO ABOUT 5 MOLES OF AMMONIA AND ABOUT 0.1 TO ABOUT 5 MOLES OF OXYGEN PER MOLE OF SAID OLEFIN; IN THE VAPOR PHASE AT A TEMPERATURE OF ABOUT 300*C. TO ABOUT 600*C. IN THE PRESENCE OF A SOLID CALCINED CATALYST WHICH CONSISTS ESSENTIALLY OF (1) ABOUT 5 TO ABOUT 60 WEIGHT PERCENT OF DODECAMOLYBDOPHOSPHORIC ACID AND (2) ABOUT 1 TO ABOUT 20 WEIGHT PERCENT ARSENIC OXIDE, CALCULATED AS AS2O5, SUPPORTED ON (3) ABOUT 30 TO ABOUT 94 WEIGTH PERCENT OF AN INERT CARRIER; THE AMOUNT OF DODECAMOYLBOPHOSPHORIC ACID BEING GREATER THAN THE AMOUNT OF ARSENIC OXIDE; SAID CATALYTIC MIXTURE HAVING BEEN CALCINED AT A TEMPERATURE OF ABOUT 200*C. TO ABOUT 600*C.
Claim 2
Dependent Claim
143 words
A PROCESS FOR PREPARING ACRYLONITRIL OR METHACRYLONITRILE WHICH COMPRISES REACTING A MIXTURE CONTAINING AN OLEFIN FROM THE GROUP OF PROPYLENE OR ISOBUTYLENE, RESPECTIVELY, AMMONIA AND OXYGEN; SAID MIXTURE CONTAINING ABOUT 0.1 TO ABOUT 5 MOLES OF AMMONIA AND ABOUT 0.1 TO ABOUT 5 MOLES OF OXYGEN PER MOLE OF SAID OLEFIN; IN THE VAPOR PHASE AT A TEMPERATURE OF ABOUT 300*C. TO ABOUT 600*C. IN THE PRESENCE OF A SOLID CALCINED CATALYST WHICH CONSISTS ESSENTIALLY OF (1) ABOUT 5 TO ABOUT 60 WEIGHT PERCENT OF DODECAMOLYBDOPHOSPHORIC ACID AND (2) ABOUT 1 TO ABOUT 20 WEIGHT PERCENT ARSENIC OXIDE, CALCULATED AS AS2O5, SUPPORTED ON (3) ABOUT 30 TO ABOUT 94 WEIGTH PERCENT OF AN INERT CARRIER; THE AMOUNT OF DODECAMOYLBOPHOSPHORIC ACID BEING GREATER THAN THE AMOUNT OF ARSENIC OXIDE; SAID CATALYTIC MIXTURE HAVING BEEN CALCINED AT A TEMPERATURE OF ABOUT 200*C. TO ABOUT 600*C.
References Cited (Backward Citations)
US3226421A
Cited
US3200141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |