US2979544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of cyclododecatri-(1, 5, 9)-enes concurrently with other cyclic hydrocarbons
Assignee: Studiengesellschaft Kohle gGmbH
•
Filing: 1958-04-15
•
Granted: 1961-04-11
•
Expires: 1978-04-15
Abstract
No abstract record available.
Inventors
- 👤 Wilke Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:55
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/42; C07C2/44; C07C2/46; C07C2/465; C07C2527/00; C07C2527/06; C07C2527/135; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/14; C07C2601/00; C07C2601/18; C07C2601/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
PROCESS FOR THE PRODUCTION OF CYCLODODECATRI-(1,5, 9)-ENES WHICH COMPRISES CONTACTING A MEMBER SELECTED FROM THE GROUP CONSISTING OF BUTADIENE, ISOPRENE, AND PIPERYLENE WITH A CATALYST COMPRISING A TITANIUM HALIDE AND AN ALUMINUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALUMINUM TRIALKYLS AND DIALKYL ALUMINIUM HYDRIDES WITH THE MOLAR RATIO OF TI TO AL IN SAID CATALYST BEING BETWEEN 1:0.5 AND 1:2.0, TO THEREBY FORM CYCLODODECATRI-(1,5,9)-ENES WITH OTHER CYCLIC HYDROCARBONS CONTAINING AT LEAST 8 CARBON ATOMS AND AT LEAST 2 DOUBLE BONDS IN THE RING.
Claim 2
Dependent Claim
84 words
PROCESS FOR THE PRODUCTION OF CYCLODODECATRI-(1,5, 9)-ENES WHICH COMPRISES CONTACTING A MEMBER SELECTED FROM THE GROUP CONSISTING OF BUTADIENE, ISOPRENE, AND PIPERYLENE WITH A CATALYST COMPRISING A TITANIUM HALIDE AND AN ALUMINUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALUMINUM TRIALKYLS AND DIALKYL ALUMINIUM HYDRIDES WITH THE MOLAR RATIO OF TI TO AL IN SAID CATALYST BEING BETWEEN 1:0.5 AND 1:2.0, TO THEREBY FORM CYCLODODECATRI-(1,5,9)-ENES WITH OTHER CYCLIC HYDROCARBONS CONTAINING AT LEAST 8 CARBON ATOMS AND AT LEAST 2 DOUBLE BONDS IN THE RING.
References Cited (Backward Citations)
US2402875A
Cited
US2686208A
Cited
US2686209A
Cited
BE533362A
Cited
BE538782A
Cited
US2851505A
Cited
US2868771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |