US3882047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation catalyst composition of unsaturated carboxylic acid
Assignee: Nippon Shokubai Co Ltd
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Filing: 1973-08-27
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Granted: 1975-05-06
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Expires: 1993-08-27
Abstract
Abstract An oxidation catalyst represented by the following empirical formula
Inventors
- 👤 Akihiko Niina
- 👤 Kiyomori Qura
- 👤 Kuniyoshi Tashiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:27
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/186; B01J27/188; B01J27/19; 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: 5
Claim 1
Independent Claim
79 words
AN OXIDATION CATALYST COMPOSITION FOR USE IN THE VAPOR PHASE CATALYTIC OXIDATION OF UNSATURATED ALDEHYDES SELECTED FROM THE GROUP CONSISTING OF ACROLEIN AND METHACROLEIN TO A CORRESPONDING UNSATURATED CARBOXYLIC ACID WHICH CONSISTS ESSENTIALLY OF A CATALYTIC OXIDE OF MOLYBDENUM, PHOSPHORUS, AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF THALLIUM, RUBIDIUM, CESIUM, AND POTASSIUM, AND AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, SILICON, ALUMINUM, GERMANIUM AND TITANIUM, THE CATALYTIC OXIDE HAVING THE FOLLOWING FORMULA
Claim 2
Dependent Claim
79 words
AN OXIDATION CATALYST COMPOSITION FOR USE IN THE VAPOR PHASE CATALYTIC OXIDATION OF UNSATURATED ALDEHYDES SELECTED FROM THE GROUP CONSISTING OF ACROLEIN AND METHACROLEIN TO A CORRESPONDING UNSATURATED CARBOXYLIC ACID WHICH CONSISTS ESSENTIALLY OF A CATALYTIC OXIDE OF MOLYBDENUM, PHOSPHORUS, AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF THALLIUM, RUBIDIUM, CESIUM, AND POTASSIUM, AND AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, SILICON, ALUMINUM, GERMANIUM AND TITANIUM, THE CATALYTIC OXIDE HAVING THE FOLLOWING FORMULA
Claim 3
Dependent Claim
15 words
The oxidation catalyst composition of claim 1, wherein the atomic ratio of a:b:c:d is 1:0.5-0.02:0.5-0.02:1-0.02.
Claim 4
Dependent Claim
16 words
The oxidation catalyst composition of claim 1, wherein the catalyst is diluted with an inert diluent.
Claim 5
Dependent Claim
16 words
The oxidation catalyst composition of claim 1, wherein the catalyst is supported on an inert carrier.
References Cited (Backward Citations)
US3156706A
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US3254110A
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US3385796A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |