US2845451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of acrylic acid and its functional derivatives
Assignee: BASF SE
•
Filing: 1956-06-22
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Granted: 1958-07-29
•
Expires: 1976-06-22
Abstract
No abstract record available.
Inventors
- 👤 Lautenschlager Hans
- 👤 Friederich Herbert
- 👤 Henkel Erich
- 👤 Kutepow Nikolaus Von
- 👤 Himmele Walter
- 👤 Raff Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:07
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/10; C07C51/14; B; B01; B01J; B01J31/00; B01J31/16; B01J31/18; B01J31/1805; B01J31/22; B01J31/2204; B01J31/2208; B01J31/2217; B01J31/2226; B01J31/223; B01J31/2234; B01J31/226; C07C67/00; C07C67/36; C07C67/38; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/321; B01J2531/00; B01J2531/80; B01J2531/84; B01J2531/847; B01J31/26; B01J31/28; B01J31/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN A METHOD OF MANUFACTURING ACRYLIC ACID OR ITS LOWER ALKYL ESTERS BY THE CATALYTIC INTERACTION OF ACETYLENE, CARBON MONOXIDE AND A COMPOUND HAVING A REMOVABLE HYDROGEN ATOM, SELECTED OF THE GROUP CONSISTING OF WATER AND A LOWER ALIPHATIC ALCOHOL AT A TEMPERATURE BETWEEN 100 AND 250*C. AND UNDER A PRESSURE OF FROM 5 TO 100 ATMOSPHERES, IN THE PRESENCE OF A HALIDE-CONTAINING COMPLEX-NICKEL-CATALYST THE IMPROVEMENT WHICH COMPRISES CARRYING OUT SAID REACTION WITH A COMPLEX-NICKEL-CATALYST WHICH IS FORMED FROM NICKEL BROMIDE AND AT LEAST ONE HYDROCARBON COMPLEX-FORMING COMPOUND CONTAINING 2 ELEMENTS SELECTED FROM THE GROUP CONSISTING OF OXYGEN, NITROGEN AND SULFUR HAVING THE FORMULA
Claim 2
Dependent Claim
104 words
IN A METHOD OF MANUFACTURING ACRYLIC ACID OR ITS LOWER ALKYL ESTERS BY THE CATALYTIC INTERACTION OF ACETYLENE, CARBON MONOXIDE AND A COMPOUND HAVING A REMOVABLE HYDROGEN ATOM, SELECTED OF THE GROUP CONSISTING OF WATER AND A LOWER ALIPHATIC ALCOHOL AT A TEMPERATURE BETWEEN 100 AND 250*C. AND UNDER A PRESSURE OF FROM 5 TO 100 ATMOSPHERES, IN THE PRESENCE OF A HALIDE-CONTAINING COMPLEX-NICKEL-CATALYST THE IMPROVEMENT WHICH COMPRISES CARRYING OUT SAID REACTION WITH A COMPLEX-NICKEL-CATALYST WHICH IS FORMED FROM NICKEL BROMIDE AND AT LEAST ONE HYDROCARBON COMPLEX-FORMING COMPOUND CONTAINING 2 ELEMENTS SELECTED FROM THE GROUP CONSISTING OF OXYGEN, NITROGEN AND SULFUR HAVING THE FORMULA
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) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |