Patent US3270071A successfully refreshed from Google Patents.
US3270071A
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Production of oligomers of butadiene
Assignee: BASF SE
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Filing: 1963-12-20
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Granted: 1966-08-30
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Expires: 1983-12-20
Abstract
No abstract record available.
Inventors
- 👤 Mueller Herbert
- 👤 Scharf Emil
- 👤 Wittenberg Dietmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:12
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/42; C07C2/44; C07C2/46; C07C2531/00; C07C2531/02; C07C2531/16; C07C2531/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PROCESS FOR THE OLIGOMERIZATION OF BUTADIENE WHICH COMPRISES PREPARING AN OLIGOMERIZATION CATALYST BY THE INTERACTION OF NICKEL TETRACARBONYL WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYENES AND ACETYLENE COMPOUNDS, SAID INTERACTION RELEASING CARBON MONOXIDE FROM SAID NICKEL TETRACARBONYL, KEEPING THE DISPLACED CARBON MONOXIDE CONTENT OF THE CATALYST INTERACTION MIXTURE LOW BY REMOVING SAID CARBON MONOXIDE FROM THE CATALYST INTERACTION MIXTURE, AND OLIGOMERIZING BUTADIENE IN THE PRESENCE OF SAID CATALYST OF LOW CARBON MONOXIDE CONTENT AT A CONCENTRATION OF SAID CATALYST AT 0.001% TO 5% WITH REFERENCE TO THE BUTADIENE
Claim 2
Dependent Claim
92 words
A PROCESS FOR THE OLIGOMERIZATION OF BUTADIENE WHICH COMPRISES PREPARING AN OLIGOMERIZATION CATALYST BY THE INTERACTION OF NICKEL TETRACARBONYL WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYENES AND ACETYLENE COMPOUNDS, SAID INTERACTION RELEASING CARBON MONOXIDE FROM SAID NICKEL TETRACARBONYL, KEEPING THE DISPLACED CARBON MONOXIDE CONTENT OF THE CATALYST INTERACTION MIXTURE LOW BY REMOVING SAID CARBON MONOXIDE FROM THE CATALYST INTERACTION MIXTURE, AND OLIGOMERIZING BUTADIENE IN THE PRESENCE OF SAID CATALYST OF LOW CARBON MONOXIDE CONTENT AT A CONCENTRATION OF SAID CATALYST AT 0.001% TO 5% WITH REFERENCE TO THE BUTADIENE
References Cited (Backward Citations)
US2686208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |