Patent US3007907A successfully refreshed from Google Patents.
US3007907A
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Polymerization process, using a catalyst of an alkali metal hydrocarbon, a group ivb metal tetrahalide and aluminum trichloride
Assignee: Millennium Petrochemicals Inc
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Filing: 1955-12-30
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Granted: 1961-11-07
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Expires: 1975-12-30
Abstract
No abstract record available.
Inventors
- 👤 Robert E Robinson
- 👤 Schott Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:48
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A POLYMERIZATION PROCESS WHICH COMPRISES CONTACTING ETHYLENE WITH A COMBINATION CATALYST CONSISTING ESSENTIALLY OF THE REACTION MIXTURE FORMED IN ADMIXING (1) AT LEAST ONE ALKALI METAL HYDROCARBON, (2) AT LEAST ONE COMPOUND FROM THE GROUP CONSISTING OF GROUP IVB METAL TETRAHALIDES AND COMPOUNDS IN WHICH FROM 1 TO 4, INCLUSIVE, OF THE HALIDE ATOMS OF A GROUP IVB METAL TETRAHALIDE IS REPLACED WITH AN OR GROUP IN WHICH R IS ALKYL, AND (3) ALUMINUM TRICHLORIDE IN AN AMOUNT SUFFICIENT TO INCREASE THE ACTIVITY OF COMPONENTS (1) AND (2) SO AS TO INCREASE POLYMER YIELD.
Claim 2
Dependent Claim
94 words
A POLYMERIZATION PROCESS WHICH COMPRISES CONTACTING ETHYLENE WITH A COMBINATION CATALYST CONSISTING ESSENTIALLY OF THE REACTION MIXTURE FORMED IN ADMIXING (1) AT LEAST ONE ALKALI METAL HYDROCARBON, (2) AT LEAST ONE COMPOUND FROM THE GROUP CONSISTING OF GROUP IVB METAL TETRAHALIDES AND COMPOUNDS IN WHICH FROM 1 TO 4, INCLUSIVE, OF THE HALIDE ATOMS OF A GROUP IVB METAL TETRAHALIDE IS REPLACED WITH AN OR GROUP IN WHICH R IS ALKYL, AND (3) ALUMINUM TRICHLORIDE IN AN AMOUNT SUFFICIENT TO INCREASE THE ACTIVITY OF COMPONENTS (1) AND (2) SO AS TO INCREASE POLYMER YIELD.
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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) | 1964-11-06 | 1965-05-08 | 1965-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-06 | 1969-05-08 | 1969-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-06 | 1973-05-08 | 1973-11-07 | $7700.00 | Window Closed / Lapsed |