US2962487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-component aluminum-titanium tetrahalide catalyst for olefin polymerization therewith
Assignee: Eastman Kodak Co
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Filing: 1958-03-31
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Granted: 1960-11-29
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Expires: 1978-03-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry W Coover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:02
CPC Classifications
C; C08; C08F; C08F12/00; C08F12/02; C08F12/04; C08F12/06; C08F12/08; C08F110/00; C08F110/04; C08F110/06; C08F110/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
IN THE POLYMERIZATION OF A-MONOOLEFINIC HYDROCARBONS CONTAINING FROM 3 TO 8 CARBON ATOMS TO FORM SOLID CRYSTALLINE POLYMER, THE IMPROVEMENT WHICH COMPRISES CATALYZING THE POLYMERIZATION WITH A CATALYTIC MIXTURE CONSISTING ESSENTIALLY OF AN ACTIVATED ALUMINUM-TITANIUM TETRACHLORIDE AND AN ORGANOPHOSPHORUS COMPOUND SELECTED FROM THE GROUP CONSISTING OF LOWER TRIALKYL PHOSPHITES, LOWER TRIALKYL PHOSPHATES AND LOWER HEXAALKYL PHOSPHORIC TRIAMIDES, THE MOLAR RATIO OF TITANIUM TETRACHLORIDE TO ORGANOPHOSPHORUS COMPOUND BEING WITH THE RANGE OF 1:1 TO 1:0.1.
Claim 2
Dependent Claim
74 words
IN THE POLYMERIZATION OF A-MONOOLEFINIC HYDROCARBONS CONTAINING FROM 3 TO 8 CARBON ATOMS TO FORM SOLID CRYSTALLINE POLYMER, THE IMPROVEMENT WHICH COMPRISES CATALYZING THE POLYMERIZATION WITH A CATALYTIC MIXTURE CONSISTING ESSENTIALLY OF AN ACTIVATED ALUMINUM-TITANIUM TETRACHLORIDE AND AN ORGANOPHOSPHORUS COMPOUND SELECTED FROM THE GROUP CONSISTING OF LOWER TRIALKYL PHOSPHITES, LOWER TRIALKYL PHOSPHATES AND LOWER HEXAALKYL PHOSPHORIC TRIAMIDES, THE MOLAR RATIO OF TITANIUM TETRACHLORIDE TO ORGANOPHOSPHORUS COMPOUND BEING WITH THE RANGE OF 1:1 TO 1:0.1.
References Cited (Backward Citations)
US2839474A
Cited
FR1123617A
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US2840617A
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FR1147868A
Cited
US2874153A
Cited
US2862917A
Cited
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Cited
US2846427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |