US3202646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of cis-polybutadiene in an aromatic-aliphatic mixed diluent
Assignee: Phillips Petroleum Co
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Filing: 1961-09-25
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Granted: 1965-08-24
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Expires: 1981-09-25
Abstract
No abstract record available.
Inventors
- 👤 Floyd E Naylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:21
CPC Classifications
C; C08; C08F; C08F136/00; C08F136/02; C08F136/04; C08F136/06; C08F2410/00; C08F2410/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
IN A PROCESS FOR POLYMERIZING 1,3-BUTADIENE IN THE PRESENCE OF AN IODINE-CONTAINING CATALYST WHICH POLYMERIZES BUTADIENE TO A POLYMER CONTAINING AT LEAST 85 PERCENT CIS 1,4-ADDITION AND WHICH FORMS ON MIXING COMPONENETS COMPRISING AN ORGANOALUMINUM COMPOUND AND A TITANIUM HALIDE, THE IMPROVEMENT WHICH COMPRISES CHARGING TO A POLYMERIZATION ZONE SAID CATALYST, 1,3-BUTADIENE AND AN AROMATIC HYDROCARBON DILUETN; AFTER POLYMERIZATION REACTION IS INITIATED IN THE SUBSTANTIAL ABSENCE OF ALIPHATIC HYDROCARBON DILUENT, CONTINUOUSLY INTRODUCING INTO SAID POLYMERIZATION ZONE AN ALIPHATIC HYDROCARBON DILUENT UNTIL TERMINATION OF THE POLYMERIZATION REACTION, THE AMOUNT OF ALIPHATIC HYDROCARBON DILUENT ADDED BEING A MAJOR PROPORTION OF THE TOTAL DILUENT AND A MAJOR PORTION OF THE POLYMERIZATION BEING PERFORMED IN THE PRESENCE OF SAID ALIPHATIC DILUENT; AND RECOVERING THE POLYMER OF 1,3-BUTADIENE SO PRODUCED.
Claim 2
Dependent Claim
125 words
IN A PROCESS FOR POLYMERIZING 1,3-BUTADIENE IN THE PRESENCE OF AN IODINE-CONTAINING CATALYST WHICH POLYMERIZES BUTADIENE TO A POLYMER CONTAINING AT LEAST 85 PERCENT CIS 1,4-ADDITION AND WHICH FORMS ON MIXING COMPONENETS COMPRISING AN ORGANOALUMINUM COMPOUND AND A TITANIUM HALIDE, THE IMPROVEMENT WHICH COMPRISES CHARGING TO A POLYMERIZATION ZONE SAID CATALYST, 1,3-BUTADIENE AND AN AROMATIC HYDROCARBON DILUETN; AFTER POLYMERIZATION REACTION IS INITIATED IN THE SUBSTANTIAL ABSENCE OF ALIPHATIC HYDROCARBON DILUENT, CONTINUOUSLY INTRODUCING INTO SAID POLYMERIZATION ZONE AN ALIPHATIC HYDROCARBON DILUENT UNTIL TERMINATION OF THE POLYMERIZATION REACTION, THE AMOUNT OF ALIPHATIC HYDROCARBON DILUENT ADDED BEING A MAJOR PROPORTION OF THE TOTAL DILUENT AND A MAJOR PORTION OF THE POLYMERIZATION BEING PERFORMED IN THE PRESENCE OF SAID ALIPHATIC DILUENT; AND RECOVERING THE POLYMER OF 1,3-BUTADIENE SO PRODUCED.
References Cited (Backward Citations)
BE551851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |