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US3070587A
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Polymerization of conjugated diolefins in the presence of ticl4 air3 and o2
Assignee: Phillips Petroleum Co
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Filing: 1958-06-16
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Granted: 1962-12-25
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Expires: 1978-06-16
Abstract
No abstract record available.
Inventors
- 👤 Robert P Zelinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:59
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN A PROCESS FOR THE POLYMERIZATION OF ISOPRENE TO FROM A RUBBERY POLYMER WHICH COMPRISES CONTACTING ISOPRENE UNDER POLYMERIZATION CONDITIONS IN THE PRESENCE OF A HYDROCARBON DILUENT WITH A CATALYST CONSISTING ESSENTIALLY OF (1) AS ORGANOALUMINUM COMPOUND CORRESPONDING TO THE FORMULA R3AL, WHEREIN R IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF ALKYL, ARYL, ALKARYL ARALKYL, CYCLOALKYL, CYCLOALKYLALKYL,AND ALKYLCYCLOALKYL, AND (2) TITANIUM TETRTACHLORIDE, THE MOL RATIO OF SAID TITANIUM TETRACHLORIDE TO SAID ORGANOALUMINUM COMPOUND BEING ABOUT 1:1, THE IMPROVEMENT WHICH COMPRISES CONDUCING SAID POLYMERIZATION IN THE PRESENCE OF OXYGEN, THE MOL RATIO OF SAID CATALYST TO OXYGEN BEING IN THE RANGE OF 6 TO 20.
Claim 2
Dependent Claim
106 words
IN A PROCESS FOR THE POLYMERIZATION OF ISOPRENE TO FROM A RUBBERY POLYMER WHICH COMPRISES CONTACTING ISOPRENE UNDER POLYMERIZATION CONDITIONS IN THE PRESENCE OF A HYDROCARBON DILUENT WITH A CATALYST CONSISTING ESSENTIALLY OF (1) AS ORGANOALUMINUM COMPOUND CORRESPONDING TO THE FORMULA R3AL, WHEREIN R IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF ALKYL, ARYL, ALKARYL ARALKYL, CYCLOALKYL, CYCLOALKYLALKYL,AND ALKYLCYCLOALKYL, AND (2) TITANIUM TETRTACHLORIDE, THE MOL RATIO OF SAID TITANIUM TETRACHLORIDE TO SAID ORGANOALUMINUM COMPOUND BEING ABOUT 1:1, THE IMPROVEMENT WHICH COMPRISES CONDUCING SAID POLYMERIZATION IN THE PRESENCE OF OXYGEN, THE MOL RATIO OF SAID CATALYST TO OXYGEN BEING IN THE RANGE OF 6 TO 20.
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) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |