Patent US3352931A successfully refreshed from Google Patents.
US3352931A
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Catalytic oligomerization of butadiene
Assignee: Phillips Petroleum Co
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Filing: 1965-08-16
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Granted: 1967-11-14
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Expires: 1985-08-16
Abstract
No abstract record available.
Inventors
- 👤 Ernest A Zuech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:06
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/42; C07C2/44; C07C2/46; C07C2/465; B; B01; B01J; B01J31/00; B01J31/02; B01J31/04; B01J31/12; B01J31/121; B01J31/14; B01J31/26; B01J31/28; B01J2231/00; B01J2231/20; B01J2231/30; B01J2231/32; B01J2231/324; B01J2231/326; B01J2231/328; C07C2531/00; C07C2531/02; C07C2531/04; C07C2531/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS FOR OLIGOMERIZATION OF A CONJUGATED DIENE HAVING FROM 4 TO 7 CARBON ATOMS THEREIN WHICH COMPRISES CONTACTING SAID DIENE IN AN OLIGOMERIZATION ZONE UNDER OLIGOMERIZATION CONDITIONS WITH A PREFORMED CATALYST SYSTEM CONSISTING ESSENTIALLY OF THE PRODUCT FORMED BY REACTING (A) A NICKEL COMPOUND, (B) AN ALKALI METAL HYDRIDE AND (C) A POLYENE ELECTRON DONOR AT A TEMPERATURE IN THE RANGE OF 0 TO 100*C.
Claim 2
Dependent Claim
66 words
A PROCESS FOR OLIGOMERIZATION OF A CONJUGATED DIENE HAVING FROM 4 TO 7 CARBON ATOMS THEREIN WHICH COMPRISES CONTACTING SAID DIENE IN AN OLIGOMERIZATION ZONE UNDER OLIGOMERIZATION CONDITIONS WITH A PREFORMED CATALYST SYSTEM CONSISTING ESSENTIALLY OF THE PRODUCT FORMED BY REACTING (A) A NICKEL COMPOUND, (B) AN ALKALI METAL HYDRIDE AND (C) A POLYENE ELECTRON DONOR AT A TEMPERATURE IN THE RANGE OF 0 TO 100*C.
References Cited (Backward Citations)
DE1140569B
Cited
GB917103A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |