Patent US3219652A successfully refreshed from Google Patents.
US3219652A
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US
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Process of polymerizing ethylene in the presence of a ziegler-type catalyst and a polyether or hydroxyether
Assignee: Gulf Oil Corp
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Filing: 1960-08-18
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Granted: 1965-11-23
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Expires: 1980-08-18
Abstract
No abstract record available.
Inventors
- 👤 Robert W Hill
- 👤 Robert L Batchelor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:01
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/02; C08F36/00; C08F36/02; C08F36/04; C08F36/14; C08F36/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
THE PROCESS OF POLYMERIZING ETHYLENE WHICH COMPRISES EFFECTING THE POLYMERIZATION WITH A CATALYST COMPRISLING THE REACTION PRODUCT OF: (A) AN ORGANOMETALLIC COMPOUND IN WHICH THE METAL THEREIN IS SELECTED FROM THE CLASS CONSISTING OF THE METALS OF GROUPS IIA, IIB AND IIIA OF THE PERIODIC TABLE; (B) A TRANSITION METAL HALIDE IN WHICH THE METAL THEREIN IS TRIVALENT AND IS SELECTED FROM THE CLASS CONSISTING OF THE METALS OF GROUPS IVB, AND VB OF THE PERIODIC TABLE, SAID METAL HALIDE CONTAINING NO ATOMS OTHER THAN SAID MTAL ATOMS AND SAID HALIDE ATOMS; AND (C) AN ADDITIVE COMPOUND SELECTED FROM THE CLASS CONSISTING OF THOS POLYETHERS AND HYDROXYETHERS WHICH FORM UNSYMMETRICAL CYCLIC COMPLEXES WITH METAL ATOMS, SAID ADDITIVE COMPOUND BEING PRESENT IN AN AMOUNT SUFFICIENT TO INCREASE THE POLYMERIZATION RATE AND DENSITY OF THE POLYETHYLENE SO PRODUCED, AS COMPARED WITH THE POLYMERIZATION RATE AND DENSITY OBTAINED IN THE ABSENCE OF SAID ADDITIVE.
Claim 2
Dependent Claim
151 words
THE PROCESS OF POLYMERIZING ETHYLENE WHICH COMPRISES EFFECTING THE POLYMERIZATION WITH A CATALYST COMPRISLING THE REACTION PRODUCT OF: (A) AN ORGANOMETALLIC COMPOUND IN WHICH THE METAL THEREIN IS SELECTED FROM THE CLASS CONSISTING OF THE METALS OF GROUPS IIA, IIB AND IIIA OF THE PERIODIC TABLE; (B) A TRANSITION METAL HALIDE IN WHICH THE METAL THEREIN IS TRIVALENT AND IS SELECTED FROM THE CLASS CONSISTING OF THE METALS OF GROUPS IVB, AND VB OF THE PERIODIC TABLE, SAID METAL HALIDE CONTAINING NO ATOMS OTHER THAN SAID MTAL ATOMS AND SAID HALIDE ATOMS; AND (C) AN ADDITIVE COMPOUND SELECTED FROM THE CLASS CONSISTING OF THOS POLYETHERS AND HYDROXYETHERS WHICH FORM UNSYMMETRICAL CYCLIC COMPLEXES WITH METAL ATOMS, SAID ADDITIVE COMPOUND BEING PRESENT IN AN AMOUNT SUFFICIENT TO INCREASE THE POLYMERIZATION RATE AND DENSITY OF THE POLYETHYLENE SO PRODUCED, AS COMPARED WITH THE POLYMERIZATION RATE AND DENSITY OBTAINED IN THE ABSENCE OF SAID ADDITIVE.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |