Patent US3308419A successfully refreshed from Google Patents.
Patent US3644548A successfully refreshed from Google Patents.
US3644548A
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Process for preparing cyclododecatriene-1 5 9
Assignee: Asahi Kasei Corp
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Filing: 1970-03-17
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Granted: 1972-02-22
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Expires: 1990-03-17
Abstract
Abstract PROCESS FOR PREPARING CYCLODODECATRIENE-1,5.9 WHICH COMPRISING TRIMERIZING BUTADIENE-1,3 BY THE USE OF A TERNARY CATALYST CONSISTING OF A TITANIUM COMPOUND REPRESENTED BY THE GENERAL FORMULA WHEREIN X IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF CHLORINE, BROMINE AND IODINE ATOM, R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN ATOM AND ALKYL RADICAL CONTAINING FROM 1 TO 5 CARBON ATOMS. AR IS ARYL RADICAL AND N IS 0 OR AN INTEGER FROM 1 TO 3, AN ORGANIC ALUMINUM HALIDE AND A MEMBER SELECTED FROM THE GROUP CONSISTING OF ACID AMIDES, SULFOXIDES, AMINOXIDES AND NITRONS. RIXN(OCH2R)4-N OR TIXN(OAR)F-N
Inventors
- 👤 Hirosi Takahasi
- 👤 Masanori Tanabe
- 👤 Muneaki Yamaguchi
- 👤 Isao Shiihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:10
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/12; B01J31/14; B01J31/143; B01J31/0201; B01J31/0211; B01J31/0212; B01J31/0214; C; C07; C07C; C07C2/00; C07C2/02; C07C2/42; C07C2/44; C07C2/46; C07C2/465; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/324; B01J2231/328; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/14; C07C2601/00; C07C2601/18; C07C2601/20
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |