US2948712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefin polymerization catalyst containing aluminium, titanium tetrahalide, and titanium alcoholate
Assignee: Eastman Kodak Co
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Filing: 1958-04-03
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Granted: 1960-08-09
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Expires: 1978-04-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry W Coover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:49
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
IN THE POLYMERIZATION OF A-MONOOLEFINIC HYDROCARBONS CONTAINING FROM 3-10 CARBON ATOMS TO FORM SOLID CRYSTALLINE POLYMER, THE IMPROVEMENT WHICH COMPRISES CATALYZING THE POLYMERIZATION WITH A CATALYTIC MIXTURE CONSISTING ESSENTTIALLY OF ALUMINUM AND A TITANIUM TETRAHALIDE SELECTED FROM THE GROUP CONSISTING OF TETRACHLORIDE, TETRABROMIDE AND TETRAIODIDE IN A WEIGHT RATIO OFF 1:15 TO 1:7 AND A WEIGHT RATIO OF TITANIUM TETRAHALIDE AND A TITANIUM ALCOHOLATE SELECTED FROM THE GROUP CONSISTING OF PHENOXIDES AND ALKOXIDES WHEREIN THE ALKOXIDE RADICALS CONTAIN FROM 1-4 CARBON ATOMS WITHIN THE RANGE OF 1:0.5 TO 1:2.
Claim 2
Dependent Claim
89 words
IN THE POLYMERIZATION OF A-MONOOLEFINIC HYDROCARBONS CONTAINING FROM 3-10 CARBON ATOMS TO FORM SOLID CRYSTALLINE POLYMER, THE IMPROVEMENT WHICH COMPRISES CATALYZING THE POLYMERIZATION WITH A CATALYTIC MIXTURE CONSISTING ESSENTTIALLY OF ALUMINUM AND A TITANIUM TETRAHALIDE SELECTED FROM THE GROUP CONSISTING OF TETRACHLORIDE, TETRABROMIDE AND TETRAIODIDE IN A WEIGHT RATIO OFF 1:15 TO 1:7 AND A WEIGHT RATIO OF TITANIUM TETRAHALIDE AND A TITANIUM ALCOHOLATE SELECTED FROM THE GROUP CONSISTING OF PHENOXIDES AND ALKOXIDES WHEREIN THE ALKOXIDE RADICALS CONTAIN FROM 1-4 CARBON ATOMS WITHIN THE RANGE OF 1:0.5 TO 1:2.
References Cited (Backward Citations)
FR1132506A
Cited
GB783487A
Cited
FR1144710A
Cited
US2845412A
Cited
FR1155944A
Cited
US2833755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |