US2967856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-component metal hydride-transition metal halide catalyst and olefin polymerization process therewith
Assignee: Eastman Kodak Co
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Filing: 1958-03-31
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Granted: 1961-01-10
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Expires: 1978-03-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry W Coover
- 👤 Frederick B Joyner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:13
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/14; C08F; C08F10/00; C08F110/00; C08F110/04; C08F110/06; C08F12/00; C08F12/02; C08F12/04; C08F12/06; C08F12/08; C08F36/00; C08F36/02; C08F36/04; C08F110/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN THE POLYMERIZATION OF A-MONOOLEFINIC HYDROCARBONS CONTAINING 3 TO 8 CARBON ATOMS TO FORM SOLID CRYSTALLINE POLYMER, THE IMPROVEMENT WHICH COMPRISES CATALYZING THE POLYMERIZATION REACTION WITH A CATALYIC MIXTURE CONSISTING ESSENTIALLY OF A HYDRIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDRIDE, POTASSIUM HYDRIDE, CALCIUM HYDRIDE AND LITHIUM ALUMINUM HYDRIDE, A CHLORIDE OF A TRANSITION METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, VANADIUM, CHROMIUM AND MOLYBDENUM AND AN ORGANOPHOSPHORUS COMPOUND SELECTED FROM THE GROUP CONSISTING OF TRI-LOWER ALKYL PHOSPHITES, TRILOWER ALKYL PHOSPHATES AND HEXALOWER ALKYL PHOSPHORIC TRIAMIDES, THE MOLAR RATIO OF HYDRIDE TO ORGANOPHOSPHORUS COMPOUND BEING WITHIN THE RANGE OF 1:1 TO 1:0.25.
Claim 2
Dependent Claim
105 words
IN THE POLYMERIZATION OF A-MONOOLEFINIC HYDROCARBONS CONTAINING 3 TO 8 CARBON ATOMS TO FORM SOLID CRYSTALLINE POLYMER, THE IMPROVEMENT WHICH COMPRISES CATALYZING THE POLYMERIZATION REACTION WITH A CATALYIC MIXTURE CONSISTING ESSENTIALLY OF A HYDRIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDRIDE, POTASSIUM HYDRIDE, CALCIUM HYDRIDE AND LITHIUM ALUMINUM HYDRIDE, A CHLORIDE OF A TRANSITION METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, VANADIUM, CHROMIUM AND MOLYBDENUM AND AN ORGANOPHOSPHORUS COMPOUND SELECTED FROM THE GROUP CONSISTING OF TRI-LOWER ALKYL PHOSPHITES, TRILOWER ALKYL PHOSPHATES AND HEXALOWER ALKYL PHOSPHORIC TRIAMIDES, THE MOLAR RATIO OF HYDRIDE TO ORGANOPHOSPHORUS COMPOUND BEING WITHIN THE RANGE OF 1:1 TO 1:0.25.
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) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |