US3790543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of alicyclic compounds
Assignee: Bayer AG
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Filing: 1972-02-09
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Granted: 1974-02-05
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Expires: 1992-02-09
Abstract
Abstract A PROCESS FOR THE POLYMERIZATION OF UNSATURATED ALICYCLIC COMPOUNDS, CHARACTERIZED IN THAT AT LEAST ONE CYCLIC OLEFIN HAVING 4, 5, 7 OR MORE RING CARBON ATOMS AND AT LEAST ONE OLEFINIC DOUBLE BOND IN THE RING IS POLYMERIZED IN THE PRESENCE OF A CATALYST SYSTEM CONSISTING OF (A) A HALIDE OR OXYHALIDE OF MOLYBDENUM OR TUNGSTEN, (B) AN ORGANOMETALLI TIN COMPOUND AND (C) OPTIONALLY A LEWIS BASE AS CO-CATALYST.
Inventors
- 👤 J Witte
- 👤 G Lehnert
- 👤 D Maertens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:01
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0234; B01J31/0255; B01J31/0257; B01J31/0262; B01J31/0201; B01J31/0204; B01J31/0205; B01J31/0208; B01J31/0215; B01J31/0218; B01J31/022; B01J31/0235; B01J31/0237; B01J31/12; B01J31/122; B01J31/26; B01J31/34; C; C08; C08F; C08F4/00; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08; B01J2231/00; B01J2231/10; B01J2231/12; B01J27/00; B01J27/06; B01J27/08; B01J27/10
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |