US2882298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of acrylic acid esters
Assignee: Wyeth Holdings LLC
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Filing: 1956-03-26
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Granted: 1959-04-14
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Expires: 1976-03-26
Abstract
No abstract record available.
Inventors
- 👤 Benjamin J Luberoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:39
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/10; C07C51/14; C07C67/00; C07C67/36; C07C67/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
IN A PROCESS FOR PREPARING AN ESTER OF ACRYLIC ACID BY REACTING EQUIVALENT AMOUNTS OF ACETYLENE, CARBON MONOXIDE AND AN ALCOHOL AT AN ELEVATED TEMPERATURE OF AT LEAST 150*C. BUT NOT MORE THAN 250*C. AND AT SUPERATMOSPHERIC PRESSURE IN THE RANGE OF FROM ABOUT 200 P.S.I. TO ABOUT 1000 P.S.I. IN THE PRESENCE OF A NICKEL IODIDE CATALYST, THE IMPROVEMENT FOR OBTAINING THE ESTER WHILE EFFECTING THE REACTION IN A SHORTENED TIME WHICH COMPRISES CONDUCTING SAID REACTION IN THE PRESENCE OF A CATALYST MIXTURE COMPRISING NICKEL IODIDE AND AT LEAST AN EQUIMOLECULAR AMOUNT OF AN ALKALI METAL IODIDE.
Claim 2
Dependent Claim
98 words
IN A PROCESS FOR PREPARING AN ESTER OF ACRYLIC ACID BY REACTING EQUIVALENT AMOUNTS OF ACETYLENE, CARBON MONOXIDE AND AN ALCOHOL AT AN ELEVATED TEMPERATURE OF AT LEAST 150*C. BUT NOT MORE THAN 250*C. AND AT SUPERATMOSPHERIC PRESSURE IN THE RANGE OF FROM ABOUT 200 P.S.I. TO ABOUT 1000 P.S.I. IN THE PRESENCE OF A NICKEL IODIDE CATALYST, THE IMPROVEMENT FOR OBTAINING THE ESTER WHILE EFFECTING THE REACTION IN A SHORTENED TIME WHICH COMPRISES CONDUCTING SAID REACTION IN THE PRESENCE OF A CATALYST MIXTURE COMPRISING NICKEL IODIDE AND AT LEAST AN EQUIMOLECULAR AMOUNT OF AN ALKALI METAL IODIDE.
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) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |