Patent US3358020A successfully refreshed from Google Patents.
US3358020A
Expired / Lapsed
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Catalytic process for the production of unsaturated aliphatic carboxylic acids
Assignee: UCB SA
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Filing: 1964-01-03
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Granted: 1967-12-12
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Expires: 1984-01-03
Abstract
No abstract record available.
Inventors
- 👤 Hendrickx Antonin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:14
CPC Classifications
B; B01; B01J; B01J21/00; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/887; B01J23/8877; C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/25; C07C51/252; B01J2523/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A PROCESS FOR THE PRODUCTION OF UNSATURATED ALIPHATIC ACID SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND A MIXTURE OF ACRYLIC ACID WITH METHACRYLIC ACID, WHICH COMPRISES CONTACTING IN THE VAPOR PHASE AT A TEMPERATURE BETWEEN 300 AND 500*C. A MIXTURE OF A CORRESPONDING UNSATURATED ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF ACROLEIN AND METHACROLEIN, OXYGEN AND WATER VAPOR, WITH A CATALYST CONSISTING ESSENTIALLY OF IRON, MOLYBDENUM, VANADIUM AND ANTIMONY IN CHEMICAL COMBINATION WITH OXYGEN, THE ANTIMONY TO IRON ATOMIC RATION BEING BE TWEEN 1/1 AND 10/1, THE IRON TO VANADIUM ATOMIC RATIO BEING BETWEEN 1/0.1 AND 1/3 AND THE IRON TO MOLYBDENUM ATOMIC RATION BEING BETWEEN 1/0.1 AND 1/3.
Claim 2
Dependent Claim
111 words
A PROCESS FOR THE PRODUCTION OF UNSATURATED ALIPHATIC ACID SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND A MIXTURE OF ACRYLIC ACID WITH METHACRYLIC ACID, WHICH COMPRISES CONTACTING IN THE VAPOR PHASE AT A TEMPERATURE BETWEEN 300 AND 500*C. A MIXTURE OF A CORRESPONDING UNSATURATED ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF ACROLEIN AND METHACROLEIN, OXYGEN AND WATER VAPOR, WITH A CATALYST CONSISTING ESSENTIALLY OF IRON, MOLYBDENUM, VANADIUM AND ANTIMONY IN CHEMICAL COMBINATION WITH OXYGEN, THE ANTIMONY TO IRON ATOMIC RATION BEING BE TWEEN 1/1 AND 10/1, THE IRON TO VANADIUM ATOMIC RATIO BEING BETWEEN 1/0.1 AND 1/3 AND THE IRON TO MOLYBDENUM ATOMIC RATION BEING BETWEEN 1/0.1 AND 1/3.
References Cited (Backward Citations)
GB903034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |