US2993883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of polymers of ethylene with a catalyst of a chromyl halide, an aluminum halide, and a hydrocarbon metal halide
Assignee: Phillips Petroleum Co
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Filing: 1959-03-25
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Granted: 1961-07-25
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Expires: 1979-03-25
Abstract
No abstract record available.
Inventors
- 👤 Harold D Lyons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:19
CPC Classifications
C; C08; C08F; C08F110/00; C08F110/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A PROCESS FOR PREPARING A POLYMER OF ETHYLENE WHICH COMPRISES CONTACTING ETHYLENE WITH A CATALYST CONSISTING ESSENTIALLY OF A CHROMYL HALIDE, AN ALUMINUM HALIDE AND AN ORGANOMETAL HALIDE CORRESPONDING TO THE FORMULA RMM''XN, WHEREIN R IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF A MONOVALENT SATURATED ACYCLIC HYDROCARBON RADICAL, A MONOVALENT SATURATED CYCLIC HYDROCARBON RADICAL AND A MONOVALENT AROMATIC HYDROCARBON RADICAL, M'' IS A METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, GALLIUM, IDIUM, THALLIUM AND BERYLLIUM, X IS A HALOGEN, M AND AND N ARE INTEGERS GREATER THAN ZERO AND THE SUM OF M AND N IS EQUAL TO THE VALENCE OF SAID METAL M''.
Claim 2
Dependent Claim
107 words
A PROCESS FOR PREPARING A POLYMER OF ETHYLENE WHICH COMPRISES CONTACTING ETHYLENE WITH A CATALYST CONSISTING ESSENTIALLY OF A CHROMYL HALIDE, AN ALUMINUM HALIDE AND AN ORGANOMETAL HALIDE CORRESPONDING TO THE FORMULA RMM''XN, WHEREIN R IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF A MONOVALENT SATURATED ACYCLIC HYDROCARBON RADICAL, A MONOVALENT SATURATED CYCLIC HYDROCARBON RADICAL AND A MONOVALENT AROMATIC HYDROCARBON RADICAL, M'' IS A METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, GALLIUM, IDIUM, THALLIUM AND BERYLLIUM, X IS A HALOGEN, M AND AND N ARE INTEGERS GREATER THAN ZERO AND THE SUM OF M AND N IS EQUAL TO THE VALENCE OF SAID METAL M''.
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) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |