US3334079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization catalyst system consisting of aluminum triethyl, titanium trichloride and a metal cyclopentadienyl
Assignee: Dow Chemical Co
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Filing: 1964-01-27
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Granted: 1967-08-01
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Expires: 1984-01-27
Abstract
No abstract record available.
Inventors
- 👤 William J Raich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:16
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A PROCESS FOR THE POLYMERIZATION OF AN A-OLEFIN REPRESENTED BY THE FORMULA R-CH=CH2, WHEREIN R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, ALKYL, CYCOALKYL, AND ARYL, WHICH COMPRISES EFFECTING THE POLYMERIZATION IN AN INERT HYDROCARBON LIQUID AND IN THE PRESENCE OF A CATALYST SYSTEM CONSISTING ESSENTIALLY OF (A) A TRIALKYLALUMINUM, (B) TITANIUM TRICHLORIDE, AND (C) A METAL CYCLOPENTADIENYL COMPOUND WHEREIN THE METAL IS SELECTED FROM THE GROUP CONSISTING OF THE METALS OF GROUPS I-A, II-A, II-B, AND III-B OF THE PERIODIC CHART OF ELEMENTS, THE MOLAR RATIO OF SAID CYCLOPENTADIENYL COMPOUND TO TITANIUM TRICHLORIDE BEING WITHIN THE RANGE OF 0.01:1 TO 0.5:1.
Claim 2
Dependent Claim
105 words
A PROCESS FOR THE POLYMERIZATION OF AN A-OLEFIN REPRESENTED BY THE FORMULA R-CH=CH2, WHEREIN R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, ALKYL, CYCOALKYL, AND ARYL, WHICH COMPRISES EFFECTING THE POLYMERIZATION IN AN INERT HYDROCARBON LIQUID AND IN THE PRESENCE OF A CATALYST SYSTEM CONSISTING ESSENTIALLY OF (A) A TRIALKYLALUMINUM, (B) TITANIUM TRICHLORIDE, AND (C) A METAL CYCLOPENTADIENYL COMPOUND WHEREIN THE METAL IS SELECTED FROM THE GROUP CONSISTING OF THE METALS OF GROUPS I-A, II-A, II-B, AND III-B OF THE PERIODIC CHART OF ELEMENTS, THE MOLAR RATIO OF SAID CYCLOPENTADIENYL COMPOUND TO TITANIUM TRICHLORIDE BEING WITHIN THE RANGE OF 0.01:1 TO 0.5:1.
References Cited (Backward Citations)
US2996459A
Cited
US3239497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |