Patent US3873376A successfully refreshed from Google Patents.
Patent US2886591A successfully refreshed from Google Patents.
US2886591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of acrylic acid esters
Assignee: BASF SE
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Filing: 1957-04-17
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Granted: 1959-05-12
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Expires: 1977-04-17
Abstract
No abstract record available.
Inventors
- 👤 Lautenschlager Hans
- 👤 Friederich Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:57
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
109 words
IN A PROCESS FOR MANUFACTURING AN ACRYLIC ACID ESTER BY REACTION OF ACETYLENE, CARBON MONOXIDE AND A LOWER ALKANOL IN AN ACID REACTION MEDIUM AND IN THE PRESENCE OF NICKEL CARBONYL, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT SAID REACTION IN SAID ACID REACTION MEDIUM CONTAINING A CATALYTIC AMOUNT OF FROM 1 TO 10% BY WEIGHT, WITH REFERENCE TO THE REACTION MIXTURE, OF NICKEL CARBONYL, AND AT NORMAL PRESSURE UP TO A PRESSURE BELOW 10 ATMOSPHERES IN THE PRESENCE OF FROM 0.1 TO 15% WITH-REFERENCE TO THE WEIGHT OF THE REACTION MIXTURE OF AN ACTIVATOR WHICH IS AN ORGANIC COMPOUND CAPABLE OF FORMING A COMPLEX COMPOUND WITH A NICKEL SALT.
Claim 2
Dependent Claim
109 words
IN A PROCESS FOR MANUFACTURING AN ACRYLIC ACID ESTER BY REACTION OF ACETYLENE, CARBON MONOXIDE AND A LOWER ALKANOL IN AN ACID REACTION MEDIUM AND IN THE PRESENCE OF NICKEL CARBONYL, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT SAID REACTION IN SAID ACID REACTION MEDIUM CONTAINING A CATALYTIC AMOUNT OF FROM 1 TO 10% BY WEIGHT, WITH REFERENCE TO THE REACTION MIXTURE, OF NICKEL CARBONYL, AND AT NORMAL PRESSURE UP TO A PRESSURE BELOW 10 ATMOSPHERES IN THE PRESENCE OF FROM 0.1 TO 15% WITH-REFERENCE TO THE WEIGHT OF THE REACTION MIXTURE OF AN ACTIVATOR WHICH IS AN ORGANIC COMPOUND CAPABLE OF FORMING A COMPLEX COMPOUND WITH A NICKEL SALT.
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) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |