US3377404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization method
Assignee: Phillips Petroleum Co
•
Filing: 1964-10-06
•
Granted: 1968-04-09
•
Expires: 1984-10-06
Abstract
No abstract record available.
Inventors
- 👤 Robert P Zelinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:56
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
175 words
A PROCESS FOR MAKING A POLYMER WHICH COMPRISES PREPARING A HYDROCARBON INSOLUBLE POLYMERIZATION INITIATOR HAVING THE FORMULA RLIX WHERE X IS AN INTEGER OF 2 TO 4 AND R IS A HYDROCARBON RADICAL SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC, CYCLOALIPHATIC AND AROMATIC RADICALS IN AN ETHER SOLVENT HAVING THE FORMULA R''OR'' WHEREIN R'' IS AN ALKYL GROUP CONTAINING 2 TO 12 CARBON ATOMS, MODIFYING SAID INITIATOR BY CONTACTING SAME WITH SUFFICIENT CONJUGATED DIENE HAVING 4 TO 8 CARBON ATOMS PER MOLECULE TO MAKE THE MODIFIED INIATOR SOLUBLE IN A LIQUID HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF PARAFFINS, CYCLOPARAFFINS AND AROMATICS, THE AMOUNT OF CONJUGATED DIENE ADDED TO MODIFY SAID INITIATOR BEING SUBSTANTIALLY NOT MORE THAN REQUIRED TO MAKE SAID MODIFIED INITIATOR SOLUBLE IN SAID LIQUID HYDROCARBON, REMOVING SAID ETHER SOLVENT, DISSOLVING SAID INITIATOR IN SAID LIQUID HYDROCARBON, AND THEREAFTER CONTRACTING THE RESULTING SOLUTION OF INITIATOR WITH A CONJUGATED DIENE HAVING 4 TO 12 CARBON ATOMS PER MOLECULE UNDER POLYMERIZATION CONDITIONS IN SAID LIQUID HYDROCARBON DILUENT AND IN THE SUBSTANTIAL ABSENCE OF SAID ETHER.
Claim 2
Dependent Claim
175 words
A PROCESS FOR MAKING A POLYMER WHICH COMPRISES PREPARING A HYDROCARBON INSOLUBLE POLYMERIZATION INITIATOR HAVING THE FORMULA RLIX WHERE X IS AN INTEGER OF 2 TO 4 AND R IS A HYDROCARBON RADICAL SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC, CYCLOALIPHATIC AND AROMATIC RADICALS IN AN ETHER SOLVENT HAVING THE FORMULA R''OR'' WHEREIN R'' IS AN ALKYL GROUP CONTAINING 2 TO 12 CARBON ATOMS, MODIFYING SAID INITIATOR BY CONTACTING SAME WITH SUFFICIENT CONJUGATED DIENE HAVING 4 TO 8 CARBON ATOMS PER MOLECULE TO MAKE THE MODIFIED INIATOR SOLUBLE IN A LIQUID HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF PARAFFINS, CYCLOPARAFFINS AND AROMATICS, THE AMOUNT OF CONJUGATED DIENE ADDED TO MODIFY SAID INITIATOR BEING SUBSTANTIALLY NOT MORE THAN REQUIRED TO MAKE SAID MODIFIED INITIATOR SOLUBLE IN SAID LIQUID HYDROCARBON, REMOVING SAID ETHER SOLVENT, DISSOLVING SAID INITIATOR IN SAID LIQUID HYDROCARBON, AND THEREAFTER CONTRACTING THE RESULTING SOLUTION OF INITIATOR WITH A CONJUGATED DIENE HAVING 4 TO 12 CARBON ATOMS PER MOLECULE UNDER POLYMERIZATION CONDITIONS IN SAID LIQUID HYDROCARBON DILUENT AND IN THE SUBSTANTIAL ABSENCE OF SAID ETHER.
References Cited (Backward Citations)
US2947793A
Cited
US3135716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |