US3189591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polymerizing alpha-olefins with an organo aluminum compound, transition metal halide, organo nitrogen base and water catalyst
Assignee: Montedison SpA
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Filing: 1961-04-24
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Granted: 1965-06-15
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Expires: 1981-04-24
Abstract
No abstract record available.
Inventors
- 👤 Serra Renato
- 👤 Giachetti Ettore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:41
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PROCESS FOR POLYMERIZING HIGHER ALPHA-OLEFINS TO POLYMERS COMPOSED AT LEAST PREVAILINGLY OF ISOTACTIC MACROMOLECULES IN THE PRESENCE OF A CATALYST COMPRISING AN ALUMINUM TRIALKYLAND A TITANIUM TRIHALIDE, CHARACTERIZED IN THAT A COMPOUND OBTAINED BY TREATING AN ORGANIC NITROGEN CONTAINING BASE SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC DIAMINES AND PYRIDINE, WHICH BASE IS PRESENT IN AN ORGANIC BASE/TITANIUM TRIHALIDE RATIO OF FROM BETWEEN 0.25:1 TO 1:1, WITH AN AMOUNT OF WATER VARYING FROM 0.1 TO 1 MOLE PER MOLE OF THE NITROGEN-CONTAINING BASE, IS ADD TO THE CATALYST PRIOR TO ITS USE IN SAID POLYMERIZATION PROCESS.
Claim 2
Dependent Claim
97 words
A PROCESS FOR POLYMERIZING HIGHER ALPHA-OLEFINS TO POLYMERS COMPOSED AT LEAST PREVAILINGLY OF ISOTACTIC MACROMOLECULES IN THE PRESENCE OF A CATALYST COMPRISING AN ALUMINUM TRIALKYLAND A TITANIUM TRIHALIDE, CHARACTERIZED IN THAT A COMPOUND OBTAINED BY TREATING AN ORGANIC NITROGEN CONTAINING BASE SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC DIAMINES AND PYRIDINE, WHICH BASE IS PRESENT IN AN ORGANIC BASE/TITANIUM TRIHALIDE RATIO OF FROM BETWEEN 0.25:1 TO 1:1, WITH AN AMOUNT OF WATER VARYING FROM 0.1 TO 1 MOLE PER MOLE OF THE NITROGEN-CONTAINING BASE, IS ADD TO THE CATALYST PRIOR TO ITS USE IN SAID POLYMERIZATION PROCESS.
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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |