US2972607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Four-component mixed metal-halogen catalysts for olefin polymerization
Assignee: Eastman Kodak Co
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Filing: 1958-03-31
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Granted: 1961-02-21
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Expires: 1978-03-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry W Coover
- 👤 Jr Newton H Shearer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:59
CPC Classifications
C; C08; C08F; C08F110/00; C08F110/04; C08F110/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
123 words
IN THE POLYMERIZATION OF A-MONOOLEFINIC HYDROCARBON CONTAINING 3 TO 10 CARBON ATOMS TO FORM SOLID, CRYSTALLINE POLYMER, THE IMPROVEMENT WHICH COMPRISES CTALYZING THE POLYMERIZATION WITH A CATALYTIC MIXTURE CONSISTING ESSENTIALLY OF TITANIUM METAL, ALUMINUM METAL, IODINE MONOCHLORIDE AND A COMPOUND OF A GROUP VA ELEMENT HAVING THE FORMULA R3Z WHEREIN Z IS A GROUP VA ELEMENT SELECTED FROM THE GROUP CONSISTING OF NITROGEN, PHOSPHORUS AND ANTIMONY AND EACH R IS A HYDROCARBON RADICAL SELECTED FROM THE GROUP CONSISTING OF ALKYL RADICALS CONTAINING 1 TO 4 CARBON ATOMS AND PHENYL, SAID CATALYTIC MIXTURE CONTAINING 0.1 TO 10 ATOMS OF ALUMINUM PER ATOM OF TITANIUM AND PER MOLE OF IODINE MONOCHLORIDE AND 0.1 TO 0.5 MOLE OF GROUP VA COMPOUND PER MOLE OF IODINE MONOCHLORIDE.
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) | 1964-02-21 | 1964-08-22 | 1965-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-21 | 1968-08-22 | 1969-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-21 | 1972-08-22 | 1973-02-21 | $7700.00 | Window Closed / Lapsed |