US3725472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing {60 ,{62 -unsaturated carboxylic acids
Assignee: Daicel Corp
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Filing: 1970-07-28
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Granted: 1973-04-03
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Expires: 1990-07-28
Abstract
Abstract Alpha , Beta -UNSATURATED CARBOXYLIC ACID IS PREPARED BY OXIDIZING AN Alpha , Beta -UNSATURATED CARBONYL COMPOUND IN THE VAPOR PHASE WITH A MOLECULAR OXYGEN-CONTAINING GAS IN THE PRESENCE OF A TERNARY CATALYST OF THE FORMULA:
Inventors
- 👤 I Abe
- 👤 T Chonan
- 👤 A Kawano
- 👤 K Sakakibara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:44
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/0009; B01J23/00; B01J23/16; B01J23/24; B01J23/28; C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/25; C07C51/252
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
19 words
A process as claimed in claim 1, wherein b is 1 to 6; and c is 0.1 to 4.0.
Claim 2
Dependent Claim
24 words
A process as claimed in claim 1, wherein the particle size of said aluminum powder is in the range of 10 to 100 mesh.
Claim 3
Dependent Claim
35 words
A process as claimed in claim 1, wherein the amount of said ternary catalyst supported on said carrier is in the range of 10 to 50% by weight, based on the weight of the carrier.
Claim 4
Dependent Claim
32 words
A process as claimed in claim 1, wherein the ternary catalyst supported on said carrier is calcined at a temperature in the range of 300*-500*C. before its use in the oxidation reaction.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |