Patent US3214484A successfully refreshed from Google Patents.
US3214484A
Expired / Lapsed
US
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Production of oligomers of 1, 3-dienes
Assignee: BASF SE
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Filing: 1961-08-07
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Granted: 1965-10-26
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Expires: 1981-08-07
Abstract
No abstract record available.
Inventors
- 👤 Wittenberg Dietmar
- 👤 Mueller Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:55
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/42; C07C2/44; C07C2/46; C07C2/465; C07C2521/00; C07C2521/02; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/125; C07C2527/135; C07C2531/00; C07C2531/02; C07C2531/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
IN A PROCESS FOR THE CATALYTIC PRODUCTION OF OLIGOMERS OF 1,3-DIENES FROM 1,3-DIENES IN WHICH A CATALYST IS USED WHICH HAS BEEN OBTAINED FROM: (A) A TITANIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF TITANIUM IV ACID ESTERS, TITANIUM HALIDES, TITANIUM IV ESTER HALIDES AND ORGANO TITANIUM HALIDES, (B) A METAL SELECTED FROM THE GROUP CONSISTING OF THE METALS OF GROUPS IA, IIA, IB, IIIA, IVB AND VIIB OF THE PERIODIC SYSTEM OF ELEMENTS, AND (C) A HALIDE OF AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF AN ELEMENTS OF GROUPS IIB, IIIA, IVA AND VA OF THE PERIODIC SYSTEM, AT LEAST ONE OF THE COMPONENTS (B) AND (C) BEING SELECTED FROM THE CLASS CONSISTING OF ALUMINUM METAL AND ALUMINUM HALIDES, THE IMPROVEMENT COMPRISING DISSOLVING THE BULK OF THESE CATALYST COMPONENTS IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF AN AROMATIC HYDROCARBON AND AN AROMATIC HYDROCARBON HALIDE SUCH THAT THE TOTAL AMOUNT OF SAID CATALYST COMPONENTS REMAINING AS SOLID SUBSTANCES IN THE SOLUTION IS LESS THAN 10% AND CARRYING OUT SAID PROCESS WITH THE DISSOLVED CATALYST COMPONENTS.
Claim 2
Dependent Claim
178 words
IN A PROCESS FOR THE CATALYTIC PRODUCTION OF OLIGOMERS OF 1,3-DIENES FROM 1,3-DIENES IN WHICH A CATALYST IS USED WHICH HAS BEEN OBTAINED FROM: (A) A TITANIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF TITANIUM IV ACID ESTERS, TITANIUM HALIDES, TITANIUM IV ESTER HALIDES AND ORGANO TITANIUM HALIDES, (B) A METAL SELECTED FROM THE GROUP CONSISTING OF THE METALS OF GROUPS IA, IIA, IB, IIIA, IVB AND VIIB OF THE PERIODIC SYSTEM OF ELEMENTS, AND (C) A HALIDE OF AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF AN ELEMENTS OF GROUPS IIB, IIIA, IVA AND VA OF THE PERIODIC SYSTEM, AT LEAST ONE OF THE COMPONENTS (B) AND (C) BEING SELECTED FROM THE CLASS CONSISTING OF ALUMINUM METAL AND ALUMINUM HALIDES, THE IMPROVEMENT COMPRISING DISSOLVING THE BULK OF THESE CATALYST COMPONENTS IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF AN AROMATIC HYDROCARBON AND AN AROMATIC HYDROCARBON HALIDE SUCH THAT THE TOTAL AMOUNT OF SAID CATALYST COMPONENTS REMAINING AS SOLID SUBSTANCES IN THE SOLUTION IS LESS THAN 10% AND CARRYING OUT SAID PROCESS WITH THE DISSOLVED CATALYST COMPONENTS.
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |