Patent US2769835A successfully refreshed from Google Patents.
US2769835A
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US
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Process of producing alkyl acrylates by dehydrohalogenation using an anhydrous calcium sulfate catalyst
Assignee: Monsanto Chemicals Ltd
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Filing: 1953-12-09
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Granted: 1956-11-06
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Expires: 1973-12-09
Abstract
No abstract record available.
Inventors
- 👤 Kosmin Milton
- 👤 Heininger Samuel Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:37
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/52; C07C69/533; C07C69/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
THE METHOD WHICH COMPRISES CONTACTING AN ALKYL B-CHLOROPROPIONATE HAVING FROM 1 TO 18 ATOMS IN THE ALKYL RADICAL WITH ANHYDROUS CALCIUM SULFATE AT A TEMPERATURE OF FROM 150* C. TO 375* C. AND RECOVERING FROM THE RESULTING REACTION PRODUCT AN ALKYL ACRYLATE HAVING FROM 1 TO 18 CARBON ATOMS IN THE ALKYL RADICAL.
Claim 2
Independent Claim
53 words
THE METHOD WHICH COMPRISES CONTACTING AN ALKYL B-CHLOROPROPIONATE HAVING FROM 1 TO 18 ATOMS IN THE ALKYL RADICAL WITH ANHYDROUS CALCIUM SULFATE AT A TEMPERATURE OF FROM 150* C. TO 375* C. AND RECOVERING FROM THE RESULTING REACTION PRODUCT AN ALKYL ACRYLATE HAVING FROM 1 TO 18 CARBON ATOMS IN THE ALKYL RADICAL.
References Cited (Backward Citations)
US2210564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |