Patent US3360544A successfully refreshed from Google Patents.
US3360544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes for preparing alkyl hydroxyalkyl fumarates
Assignee: Monsanto Co
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Filing: 1963-07-19
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Granted: 1967-12-26
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Expires: 1983-07-19
Abstract
No abstract record available.
Inventors
- 👤 James C Wygant
- 👤 Erhard J Prill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:58
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/52; C07C67/00; C07C67/24; C07C67/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A PROCESS FOR PREPARING ALKYL 2-HYDROXYLAKYL FUMARATES WHICH COMPRISES REACTING AN ALKYLENE OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE AND PROPYLENE OXIDE AND AN ALKYL HYDROGEN FUMARATE WHERE THE ALKYL GROUP HAS NO MORE THAN ABOUT 12 CARBON ATOMS IN THE PRESENCE OF AN ALKYL METAL FUMARATE CATALYST WHERE THE METAL IN THE FUMARATE SALT IS SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS AND WHERE THE CATALYST IS USED IN AN AMOUNT EQUAL TO ABOUT 0.1 TO 10 EQUIVALENT PERCENT BASED ON THE ALKYL HYDROGEN FURMARATE AND THE TEMPERATURE IS MAINTAINED BETWEEN ABOUT 75* TO 150*C. AND STOPPING THE REACTION WHEN THE ACID NUMBER OF THE REACTION MIXTURE IS ABOUT 10 TO 30 BY STOPPING FLOW OF ALKYLENE OXIDE TO THE REACTION MIXTURE AND PERMITTING THE REACTION MIXTURE TO COOL.
Claim 2
Dependent Claim
137 words
A PROCESS FOR PREPARING ALKYL 2-HYDROXYLAKYL FUMARATES WHICH COMPRISES REACTING AN ALKYLENE OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE AND PROPYLENE OXIDE AND AN ALKYL HYDROGEN FUMARATE WHERE THE ALKYL GROUP HAS NO MORE THAN ABOUT 12 CARBON ATOMS IN THE PRESENCE OF AN ALKYL METAL FUMARATE CATALYST WHERE THE METAL IN THE FUMARATE SALT IS SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS AND WHERE THE CATALYST IS USED IN AN AMOUNT EQUAL TO ABOUT 0.1 TO 10 EQUIVALENT PERCENT BASED ON THE ALKYL HYDROGEN FURMARATE AND THE TEMPERATURE IS MAINTAINED BETWEEN ABOUT 75* TO 150*C. AND STOPPING THE REACTION WHEN THE ACID NUMBER OF THE REACTION MIXTURE IS ABOUT 10 TO 30 BY STOPPING FLOW OF ALKYLENE OXIDE TO THE REACTION MIXTURE AND PERMITTING THE REACTION MIXTURE TO COOL.
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) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |