Patent US1866097A successfully refreshed from Google Patents.
US3157604A
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Polymerization initiators
Assignee: Phillips Petroleum Co
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Filing: 1960-10-24
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Granted: 1964-11-17
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Expires: 1980-10-24
Abstract
No abstract record available.
Inventors
- 👤 Charles W Strobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:23
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/06; C08F4/12; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/38; C07C2/40; C07C2/403; C07C2/406; C07F; C07F1/00; C07F1/02; C08C; C08C19/00; C08C19/30; C08C19/42; C08C19/44; C08F36/00; C08F36/02; C08F36/04; C07C2523/00; C07C2523/02; C07C2523/04; C07C2531/00; C07C2531/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A METHOD OF PREPARING A POLYMERIZATION INITIATOR COMPOSITION WHICH COMPRISES CONTACTING LITHIUM WITH A MONOMER SELECTED FROM THE GROUP CONSISTING OF CONJUGATED DIENES HAVING 4 TO 12 CARBON ATOMS PER MOLECULE AND VINYLIDENE-SUBSTITUTED BENZENE AND NAPHTHALENE COMPOUNDS HAVING OTHER HYDROCARBON SUBSTITUENTS TOTALING UP TO 12 CARBON ATOMS IN A MEDIUM OF ETHER HAVING THE FORMULA R-O-R WHEREIN EACH R IS AN ALKYL GROUP CONTAINING FROM 2 TO 12 CARBON ATOMS IN THE PRESENCE OF ABOUT 0.005 TO 2 MOLES PER MOLE OF SAID MONOMER OF A PROMOTER SELECTED FROM THE GROUP CONSISTING OF POLYCYCLIC AROMATIC COMPOUNDS AND POLYARYL-SUBSTITUTED ETHYLENES CONTAINING FROM 2 TO 4 ARYL GROUPS SELECTED FROM THE GROUP CONSISTING OF PHENYL AND NAPHTHYL AT ABOUT -40 TO 170*F. FOR AT LEAST ABOUT 10 MINUTES, THE AMOUNT OF SAID ETHER BEING ABOUT 1 TO 20 MOLES PER MOLE OF SAID MONOMER, AND THE RATIO OF LITHIUM TO MONOMER BEING AT LEAST ABOUT 1 GRAM ATOM OF LITHIUM PER MOLE OF MONOMER.
Claim 2
Independent Claim
162 words
A METHOD OF PREPARING A POLYMERIZATION INITIATOR COMPOSITION WHICH COMPRISES CONTACTING LITHIUM WITH A MONOMER SELECTED FROM THE GROUP CONSISTING OF CONJUGATED DIENES HAVING 4 TO 12 CARBON ATOMS PER MOLECULE AND VINYLIDENE-SUBSTITUTED BENZENE AND NAPHTHALENE COMPOUNDS HAVING OTHER HYDROCARBON SUBSTITUENTS TOTALING UP TO 12 CARBON ATOMS IN A MEDIUM OF ETHER HAVING THE FORMULA R-O-R WHEREIN EACH R IS AN ALKYL GROUP CONTAINING FROM 2 TO 12 CARBON ATOMS IN THE PRESENCE OF ABOUT 0.005 TO 2 MOLES PER MOLE OF SAID MONOMER OF A PROMOTER SELECTED FROM THE GROUP CONSISTING OF POLYCYCLIC AROMATIC COMPOUNDS AND POLYARYL-SUBSTITUTED ETHYLENES CONTAINING FROM 2 TO 4 ARYL GROUPS SELECTED FROM THE GROUP CONSISTING OF PHENYL AND NAPHTHYL AT ABOUT -40 TO 170*F. FOR AT LEAST ABOUT 10 MINUTES, THE AMOUNT OF SAID ETHER BEING ABOUT 1 TO 20 MOLES PER MOLE OF SAID MONOMER, AND THE RATIO OF LITHIUM TO MONOMER BEING AT LEAST ABOUT 1 GRAM ATOM OF LITHIUM PER MOLE OF MONOMER.
References Cited (Backward Citations)
US2146447A
Cited
FR1162710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |