US2991306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of allyl acrylate from acrolein
Assignee: Shell USA Inc
•
Filing: 1958-12-29
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Granted: 1961-07-04
•
Expires: 1978-12-29
Abstract
No abstract record available.
Inventors
- 👤 Youngman Edward
- 👤 Frederick F Rust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:07
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN A PROCESS FOR THE PREPARATION OF ALLYL ACRYLATE BY THE CONDENSATION OF ACROLEIN UNDER SUBSTANTIALLY ANHYDORUS CONDITIONS AND THE PRESENCE OF AN ALUMINUN ALCOHOLATE AS CATALYST, THE IMPROVEMENT WHICH COMPRISES EMPLOYING FROM ABOUT 0.001 TO ABOUT 0.10 MOLE OF ALUMINUM ALCOHOLATE PER MOLE OF ACROLEIN AND LIMITING THE CONVERSION OF ACCROLEIN TO A SUBSTANTIAL LEVEL NOT EXCEEDING A MAXIMUN VARYING FROM ABOUT 25% AT A CATALYST CONCENTRATION OF ABOUT 0.001 MOLE PER MOLE OF ACROLEIN TO ABOUT 85% AT A CATALYST CONCENTRATION OF ABOUT 0.01 MOLE PER MOLE OF ACROLEIN.
Claim 2
Dependent Claim
91 words
IN A PROCESS FOR THE PREPARATION OF ALLYL ACRYLATE BY THE CONDENSATION OF ACROLEIN UNDER SUBSTANTIALLY ANHYDORUS CONDITIONS AND THE PRESENCE OF AN ALUMINUN ALCOHOLATE AS CATALYST, THE IMPROVEMENT WHICH COMPRISES EMPLOYING FROM ABOUT 0.001 TO ABOUT 0.10 MOLE OF ALUMINUM ALCOHOLATE PER MOLE OF ACROLEIN AND LIMITING THE CONVERSION OF ACCROLEIN TO A SUBSTANTIAL LEVEL NOT EXCEEDING A MAXIMUN VARYING FROM ABOUT 25% AT A CATALYST CONCENTRATION OF ABOUT 0.001 MOLE PER MOLE OF ACROLEIN TO ABOUT 85% AT A CATALYST CONCENTRATION OF ABOUT 0.01 MOLE PER MOLE OF ACROLEIN.
References Cited (Backward Citations)
US2516627A
Cited
DE945984C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |