US3751501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telomerization reactions utilizing liquid hydrocarbon solutions of certain organometallic complexes
Assignee: Lithium Corp of America Inc
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Filing: 1972-08-09
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Granted: 1973-08-07
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Expires: 1992-08-09
Abstract
Abstract TELOMERIZATION REACTIONS WHEREIN AN AROMATIC HYDROCARBON, SUCH AS TOLUENE, IS TELOMERIZED, IN THE PRESENCE OF CATALYST MIXTURE OR COMPLEX COMPRISING, BY WAY OF ILLUSTRAION, (A) N-BUTYLSODIUM OR N-BUTYLPOTASSIUM AND (B) ALKYLLITHIUMS SUCH AS N-BUTYLLITHIUM, BY THE GRADUAL AND CONTROLLED ADDITION OF MONOMERS SUCH AS CONJUGATED DIENES AND/OR VINYL-SUBSTITUTED AROMATIC COMPOUNDS, WHEREBY TO PRODUCE NOVEL LIQUID RESINOUS TELOMERS.
Inventors
- 👤 C Kamienski
- 👤 J Merkley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:31
CPC Classifications
C; C07; C07F; C07F1/00; C07F1/02; B; B01; B01J; B01J31/00; B01J31/02; B01J31/12; B01J31/122; C07C; C07C2/00; C07C2/54; C07C2/72; C07C2/86; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/16; C07C2531/22
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |