US3072630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of ethylene using coordination catalyst system with a halide promotor
Assignee: EIDP Inc
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Filing: 1955-03-08
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Granted: 1963-01-08
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Expires: 1975-03-08
Abstract
No abstract record available.
Inventors
- 👤 Jong Jan Ide De
- 👤 Safranski Leo Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:44
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
THE PROCESS OF POLYMERIZING ETHYLENE WHICH COMPRISES MAINTAINING ETHYLENE AT A TEMPERATURE OF 0 TO 300* C. AND A PRESSURE OF 1 TO 1000 ATMOSPHERES IN THE PRESENCE OF A POLYMERIZATION INITIATOR, SAID POLYMERIZATION INITIATOR BEING THE PRODUCT FORMED BY ADMIXING A HALIDE OF A TRANSITION ELEMENT OF GROUPS IVB TO VIB OF THE PERIODIC TABLE WITH A COMPOUND OF THE CLASS CONSISTING OF ORGANOMETALLIC COMPOUNDS, GRIGNARD REAGENTS, AND ALKALI METALS AND A COMPOUND OF THE CLASS CONSISTING OF HYDROGEN HALIDES, ALKYL MONOHALIDES AND ARYL MONOHALIDES, THE HALOGEN IN SAID HALIDES BEING OF THE CLASS CONSISTING OF CHLORINE AND BROMINE, AND RECOVERING A POLYMER OF ETHYLENE.
Claim 2
Dependent Claim
106 words
THE PROCESS OF POLYMERIZING ETHYLENE WHICH COMPRISES MAINTAINING ETHYLENE AT A TEMPERATURE OF 0 TO 300* C. AND A PRESSURE OF 1 TO 1000 ATMOSPHERES IN THE PRESENCE OF A POLYMERIZATION INITIATOR, SAID POLYMERIZATION INITIATOR BEING THE PRODUCT FORMED BY ADMIXING A HALIDE OF A TRANSITION ELEMENT OF GROUPS IVB TO VIB OF THE PERIODIC TABLE WITH A COMPOUND OF THE CLASS CONSISTING OF ORGANOMETALLIC COMPOUNDS, GRIGNARD REAGENTS, AND ALKALI METALS AND A COMPOUND OF THE CLASS CONSISTING OF HYDROGEN HALIDES, ALKYL MONOHALIDES AND ARYL MONOHALIDES, THE HALOGEN IN SAID HALIDES BEING OF THE CLASS CONSISTING OF CHLORINE AND BROMINE, AND RECOVERING A POLYMER OF ETHYLENE.
References Cited (Backward Citations)
US2691647A
Cited
US2721189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |