US3159587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organopolylithium polymerization initiators and their preparation
Assignee: Phillips Petroleum Co
•
Filing: 1961-08-21
•
Granted: 1964-12-01
•
Expires: 1981-08-21
Abstract
No abstract record available.
Inventors
- 👤 Carl A Uraneck
- 👤 Gerald R Kahle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:36
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/06; C08F4/12; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A PROCESS FOR FORMING AN ORGANOPOLYLITHIUM POLYMERIZATION INITIATOR COMPOSITION WHICH COMPRISES CONTACTING LITHIUM WITH A POLYARYL-SUBSTITUTED ETHYLENE COMPOUND CONTAINING FROM 2 TO 4 ARYL GROUPS SELECTED FROM THE GROUP CONSISTING OF PHENYL AND NAPHTHYL IN A REACTION MEDIUM COMPRISING AN OLEFINIC HYDROCARBON MATERIAL HAVING FROM 2 TO 20, INCLUSIVE, CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF MONOOLEFINS AND NONCONJUGATED POLYENES HAVING FROM 2 TO 3 DOUBLE BONDS PER MOLECULE AT A TEMPERATURE IN THE RANGE -20 TO 100*C.
Claim 2
Dependent Claim
79 words
A PROCESS FOR FORMING AN ORGANOPOLYLITHIUM POLYMERIZATION INITIATOR COMPOSITION WHICH COMPRISES CONTACTING LITHIUM WITH A POLYARYL-SUBSTITUTED ETHYLENE COMPOUND CONTAINING FROM 2 TO 4 ARYL GROUPS SELECTED FROM THE GROUP CONSISTING OF PHENYL AND NAPHTHYL IN A REACTION MEDIUM COMPRISING AN OLEFINIC HYDROCARBON MATERIAL HAVING FROM 2 TO 20, INCLUSIVE, CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF MONOOLEFINS AND NONCONJUGATED POLYENES HAVING FROM 2 TO 3 DOUBLE BONDS PER MOLECULE AT A TEMPERATURE IN THE RANGE -20 TO 100*C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |