US3240806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing a mixture of unsaturated aliphatic acids and aldehydes
Assignee: Distillers Co Yeast Ltd
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Filing: 1963-04-17
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Granted: 1966-03-15
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Expires: 1983-04-17
Abstract
No abstract record available.
Inventors
- 👤 Bethell James Robert
- 👤 Hadley David James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:20
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/882; B01J27/00; B01J27/02; B01J27/057; B01J27/0576; B01J37/00; C07C51/00; C07C51/16; C07C51/21; C07C51/25; C07C51/252; B01J2523/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A PROCESS WHICH COMPRISES REACTING IN THE VAPOR PHASE AT A TEMPERATURE OF FROM ABOUT 300* TO ABOUT 500* C. FOR FROM ABOUT 1 TO ABOUT 30 SECONDS A FEED MIXTURE OF AN INERT DILUENT, OXYGEN, AND AN OLEFIN SELECTED FROM THE GROUP CONSISTING OF PROPYLENE AND ISOBUTENE, THE PROPORTION OF THE OLEFIN IN THE MIXTURE BEING BETWEEN ABOUT 1 AND ABOUT 20% BY VOLUME AND THE PROPORTION OF OXYGEN IN THE MIXTURE BEING BETWEEN ABOUT 1 AND ABOUT 20% BY VOLUME, IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF COBALT MOLYDATE WITH ELEMENTAL TELLURIUM AND COBALT MOLYBDATE WITH A TELLURIUM OXIDE, SUCH CATALYST CONTAINING FROM ABOUT 0.1% TO ABOUT 50% BY WEIGHT OF TELLURIUM, AND PRODUCING A PRODUCT SELECTED FROM THE GROUP CONSISTING OF A MIXTURE OF ACRYLIC ACID AND ACROLEIN WHEN PROPYLENE IS USED AND A MIXTURE OF METHACRYLIC ACID AND METHACROLEIN WHEN ISOBUTENE IS USED.
Claim 2
Dependent Claim
152 words
A PROCESS WHICH COMPRISES REACTING IN THE VAPOR PHASE AT A TEMPERATURE OF FROM ABOUT 300* TO ABOUT 500* C. FOR FROM ABOUT 1 TO ABOUT 30 SECONDS A FEED MIXTURE OF AN INERT DILUENT, OXYGEN, AND AN OLEFIN SELECTED FROM THE GROUP CONSISTING OF PROPYLENE AND ISOBUTENE, THE PROPORTION OF THE OLEFIN IN THE MIXTURE BEING BETWEEN ABOUT 1 AND ABOUT 20% BY VOLUME AND THE PROPORTION OF OXYGEN IN THE MIXTURE BEING BETWEEN ABOUT 1 AND ABOUT 20% BY VOLUME, IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF COBALT MOLYDATE WITH ELEMENTAL TELLURIUM AND COBALT MOLYBDATE WITH A TELLURIUM OXIDE, SUCH CATALYST CONTAINING FROM ABOUT 0.1% TO ABOUT 50% BY WEIGHT OF TELLURIUM, AND PRODUCING A PRODUCT SELECTED FROM THE GROUP CONSISTING OF A MIXTURE OF ACRYLIC ACID AND ACROLEIN WHEN PROPYLENE IS USED AND A MIXTURE OF METHACRYLIC ACID AND METHACROLEIN WHEN ISOBUTENE IS USED.
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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |