US2925410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst containing aluminum, titanium tetrahalide, and alkali metal fluoride and olefin polymerization therewith
Assignee: Eastman Kodak Co
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Filing: 1958-04-03
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Granted: 1960-02-16
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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 23:05
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 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 ESSENTIALLY OF ALUMINUM AND A TITANIUM TETRAHALIDE SELECTED FROM THE GROUP CONSISTING OF TETRACHLORIDE, TETRABROMIDE AND TETRAIODIDE, IN A WEIGHT RATION OF 1:0.1 TO 1:45 AND A WEIGHT RATION OF TITANIUM TETRAHALIDE AND A FLUORIDE OF AN ALKALI METAL SELECTED FROM THE GROUP CONSISTING FO SODIUM, POTASSIUM AND LITHIUM WITHIN THE RANGE OF 1:0.5 TO 1:2.
Claim 2
Dependent Claim
84 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 ESSENTIALLY OF ALUMINUM AND A TITANIUM TETRAHALIDE SELECTED FROM THE GROUP CONSISTING OF TETRACHLORIDE, TETRABROMIDE AND TETRAIODIDE, IN A WEIGHT RATION OF 1:0.1 TO 1:45 AND A WEIGHT RATION OF TITANIUM TETRAHALIDE AND A FLUORIDE OF AN ALKALI METAL SELECTED FROM THE GROUP CONSISTING FO SODIUM, POTASSIUM AND LITHIUM WITHIN THE RANGE OF 1:0.5 TO 1:2.
References Cited (Backward Citations)
US2844615A
Cited
FR1132506A
Cited
GB783487A
Cited
FR1144710A
Cited
GB794785A
Cited
US2834768A
Cited
US2840551A
Cited
FR1137020A
Cited
FR1137084A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |