Patent US3255167A successfully refreshed from Google Patents.
US3255167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefin polymerization in presence of a reduced titanium halide supported on gamma alumina and an organometallic compound
Assignee: Sunoco Inc
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Filing: 1964-08-24
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Granted: 1966-06-07
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Expires: 1984-08-24
Abstract
No abstract record available.
Inventors
- 👤 Charles L Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:03
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A PROCESS FOR POLYMERIZING OLEFINS TO HIGH MOLECULAR WEIGHT POLYMERS WHICH COMPRISES MIXING (A) GAMMA ALUMINA WITH A HALIDE SELECTED FROM THE GROUP CONSISTING OF TITANIUM TETRAHALIDES AND ZIRCONIUM TETRAHALIDES, (B) CONTACTING SAID MIXTURE WITH AN ORGANOMETALLIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF AN ALKALI METAL HYDRIDE, AN ALKALI METAL ALUMINUM HYDRIDE AND AN ALUMINUM HYDROCARBON THEREBY TO PROVIDE SAID GAMMA ALUMINA WITH 0.2 TO 20% BY WEIGHT OF A HALIDE ABSORBED THEREON SELECTED FROM THE GROUP CONSISTING OF TITANIUM SUBCHLORIDES, TITANIUM SUBBROMIDES, TITANIUM SUBFLUORIDES, ZIRCONIUM SUBCHLORIDES, ZIRCONIUM SUBBROMIDES, AND ZIRCONIUM SUBFLUORIDES, AND (C) THEREAFTER CONTACTING AN OLEFIN WITH THE CATALYTIC MATERIAL SO-PREPARED.
Claim 2
Dependent Claim
104 words
A PROCESS FOR POLYMERIZING OLEFINS TO HIGH MOLECULAR WEIGHT POLYMERS WHICH COMPRISES MIXING (A) GAMMA ALUMINA WITH A HALIDE SELECTED FROM THE GROUP CONSISTING OF TITANIUM TETRAHALIDES AND ZIRCONIUM TETRAHALIDES, (B) CONTACTING SAID MIXTURE WITH AN ORGANOMETALLIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF AN ALKALI METAL HYDRIDE, AN ALKALI METAL ALUMINUM HYDRIDE AND AN ALUMINUM HYDROCARBON THEREBY TO PROVIDE SAID GAMMA ALUMINA WITH 0.2 TO 20% BY WEIGHT OF A HALIDE ABSORBED THEREON SELECTED FROM THE GROUP CONSISTING OF TITANIUM SUBCHLORIDES, TITANIUM SUBBROMIDES, TITANIUM SUBFLUORIDES, ZIRCONIUM SUBCHLORIDES, ZIRCONIUM SUBBROMIDES, AND ZIRCONIUM SUBFLUORIDES, AND (C) THEREAFTER CONTACTING AN OLEFIN WITH THE CATALYTIC MATERIAL SO-PREPARED.
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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |