Patent US2944048A successfully refreshed from Google Patents.
US2944048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and catalyst for production of olefin polymers
Assignee: Phillips Petroleum Co
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Filing: 1955-12-30
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Granted: 1960-07-05
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Expires: 1975-12-30
Abstract
No abstract record available.
Inventors
- 👤 Nowlin Gene
- 👤 Harold D Lyons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:14
CPC Classifications
C; C08; C08F; C08F10/00; C08F110/00; C08F110/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A METHOD FOR POLYMERIZING AN ALIPHATIC 1-OLEFIN HAVING UP TO AND INCLUDING 8 CARBON ATOMS PER MOLECULE WHICH COMPRISES CONTACTING SAID OLEFIN WITH A CATALYST CONSISTING ESSENTIALLY OF (1) A METAL HALIDE SELECTED FROM THE GROUP CONSISTING OF HALIDES OF TITANIUM, ZIRCONIUM, HAFNIUM AND GERMANIUM, (2) A HYDRIDE SELECTED FROM THE GROUP CONSISTING OF HYDRIDES OF ALUMINUM, GALLIUM, INDIUM AND THALLIUM AND COMPLEXES OF SAID HYDRIDES WITH ALKALI METAL HYDRIDES, AND (3) AN ORGANIC HALIDE CORRESPONDING TO THE FORMULA RX, WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL, CTCLOALKYL, ALKENYL, CYCLOALKENYL, ARYL, AND ALKYNYL RADICALS, AND COMBINATIONS OF THESE RADICALS, AND X IS A HALOGEN, THE RATIO OF THE AMOUNTS OF THE COMPONENTS OF SAID CATALYST BEING IN THE RANGE OF FROM 0.2 TO 3 MOLS OF SAID HYDRIDE PER MOL OF SAID METAL HALIDE AND IN THE RANGE OF FROM 0.2 TO 3 MOLS OF SAID ORGANIC HALIDE PER MOL OF SAID METAL HALIDE.
Claim 2
Independent Claim
157 words
A METHOD FOR POLYMERIZING AN ALIPHATIC 1-OLEFIN HAVING UP TO AND INCLUDING 8 CARBON ATOMS PER MOLECULE WHICH COMPRISES CONTACTING SAID OLEFIN WITH A CATALYST CONSISTING ESSENTIALLY OF (1) A METAL HALIDE SELECTED FROM THE GROUP CONSISTING OF HALIDES OF TITANIUM, ZIRCONIUM, HAFNIUM AND GERMANIUM, (2) A HYDRIDE SELECTED FROM THE GROUP CONSISTING OF HYDRIDES OF ALUMINUM, GALLIUM, INDIUM AND THALLIUM AND COMPLEXES OF SAID HYDRIDES WITH ALKALI METAL HYDRIDES, AND (3) AN ORGANIC HALIDE CORRESPONDING TO THE FORMULA RX, WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL, CTCLOALKYL, ALKENYL, CYCLOALKENYL, ARYL, AND ALKYNYL RADICALS, AND COMBINATIONS OF THESE RADICALS, AND X IS A HALOGEN, THE RATIO OF THE AMOUNTS OF THE COMPONENTS OF SAID CATALYST BEING IN THE RANGE OF FROM 0.2 TO 3 MOLS OF SAID HYDRIDE PER MOL OF SAID METAL HALIDE AND IN THE RANGE OF FROM 0.2 TO 3 MOLS OF SAID ORGANIC HALIDE PER MOL OF SAID METAL HALIDE.
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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) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |