Patent US3259652A successfully refreshed from Google Patents.
US3259652A
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Oxidation of acrolein or methacrolein to the corresponding acid in the presence of an sn-sb-mo catalyst
Assignee: Shell USA Inc
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Filing: 1961-03-31
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Granted: 1966-07-05
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Expires: 1981-03-31
Abstract
No abstract record available.
Inventors
- 👤 Wolfgang M H Sachtler
- 👤 Hervey H Voge
- 👤 Lloyd B Ryland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:46
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/28; B01J23/18; C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/23; C07C51/235; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
THE PROCESS FOR THE PRODUCTION OF ALPHA,BETA-UNSATUNRATED ALIPHATIC CARBOXYLIC ACIDS SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND METHACRYLIC ACID WHICH COMPRISES REACTING THE CORRESPONDING ALPHA,BETA-UNSATURATED ALIPHATIC ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF ACROLEIN AND METHACROLEIN WITH UNCOMBINED MOLECULAR OXYGEN IN THE PRESENCE OF A CATALYST CONSISTING ESSENTIALLY OF TIN, ATIMONY AND MOLYBDENUM IN COMBINATION WITH OXYGEN, AT A TEMPERATURE OF FROM ABOUT 200 TO ABOUT 550*C., THE CONTENT IN SAID CATALYST OF EACH OF SAID TIM, ANTIMONY AND MOLYVDENUM COMPONENTS BEING IN THE RANGE OF FROM ABOUT 5% TO ABOUT 50% BY WEIGHT OF THE COMBINED WEIGHT OF TIN, ANTIMONY, AND MOLYBDENUM IN SAID CATALYST CALCULATED AS METAL.
Claim 2
Dependent Claim
111 words
THE PROCESS FOR THE PRODUCTION OF ALPHA,BETA-UNSATUNRATED ALIPHATIC CARBOXYLIC ACIDS SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND METHACRYLIC ACID WHICH COMPRISES REACTING THE CORRESPONDING ALPHA,BETA-UNSATURATED ALIPHATIC ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF ACROLEIN AND METHACROLEIN WITH UNCOMBINED MOLECULAR OXYGEN IN THE PRESENCE OF A CATALYST CONSISTING ESSENTIALLY OF TIN, ATIMONY AND MOLYBDENUM IN COMBINATION WITH OXYGEN, AT A TEMPERATURE OF FROM ABOUT 200 TO ABOUT 550*C., THE CONTENT IN SAID CATALYST OF EACH OF SAID TIM, ANTIMONY AND MOLYVDENUM COMPONENTS BEING IN THE RANGE OF FROM ABOUT 5% TO ABOUT 50% BY WEIGHT OF THE COMBINED WEIGHT OF TIN, ANTIMONY, AND MOLYBDENUM IN SAID CATALYST CALCULATED AS METAL.
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) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |