Patent US2958688A successfully refreshed from Google Patents.
US2958688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-component organometallic-transition metal halide catalysts and olefin polymerization therewith
Assignee: Eastman Kodak Co
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Filing: 1958-03-31
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Granted: 1960-11-01
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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
2026-10-28 16:24
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
197 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 WITH A CATALYTIC MIXTURE CONSISTING ESSENTIALLY OF AN ORGANOMETALLIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FORMULAS RM'', RM2 AND RM2X WHEREIN M'' IS AN ALKALI METAL SELECTED FROM THE GROUP CONSISTING OF SODIUM, POTASSIUM AND LITHIUM, M2 IS A METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM AND ZINC, R IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF ALKYL RADICALS CONTAINING 1 TO 5 CARBON ATOMS, PHENYL AND BENZYL AND X IS A HALOGEN SELECTED FROM THE GROUP CONSISTING OF CHLORINE, BROMINE AND IODINE, A HALIDE OF A TRANSITION METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIROCONIUM, VANADIUM, CHROMIUM AND MOLYBDENUM, THE HALOGEN ATOMS BEING SELECTED FROM THE GROUP CONSISITNG OF CHLORINE, BROMINE AND IODINE, AND AN ORGANOPHOSPHROUS COMPOUND SELECTED FROM THE GROUP CONSISTING OF TRI-LOWER ALKYL PHOSPHITES, TRI-LOWER ALKYL PHOSHATES AND HEXA-LOWER ALKYL PHOSPHORIC TRIAMIDES, THE ALKYL RADICALS IN SAID ORGANOPHOSPHORUS COMPOUND CONTAINING 1 TO 8 CARBON ATOMS, THE MOLAR RATIO OF TRANSITION METAL HALIDE TO ORGANOPHOSPHROUS COMPOUND BEING WITHIN THE RANGE OF 1:1 TO 1:0.1.
Claim 2
Dependent Claim
197 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 WITH A CATALYTIC MIXTURE CONSISTING ESSENTIALLY OF AN ORGANOMETALLIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FORMULAS RM'', RM2 AND RM2X WHEREIN M'' IS AN ALKALI METAL SELECTED FROM THE GROUP CONSISTING OF SODIUM, POTASSIUM AND LITHIUM, M2 IS A METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM AND ZINC, R IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF ALKYL RADICALS CONTAINING 1 TO 5 CARBON ATOMS, PHENYL AND BENZYL AND X IS A HALOGEN SELECTED FROM THE GROUP CONSISTING OF CHLORINE, BROMINE AND IODINE, A HALIDE OF A TRANSITION METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIROCONIUM, VANADIUM, CHROMIUM AND MOLYBDENUM, THE HALOGEN ATOMS BEING SELECTED FROM THE GROUP CONSISITNG OF CHLORINE, BROMINE AND IODINE, AND AN ORGANOPHOSPHROUS COMPOUND SELECTED FROM THE GROUP CONSISTING OF TRI-LOWER ALKYL PHOSPHITES, TRI-LOWER ALKYL PHOSHATES AND HEXA-LOWER ALKYL PHOSPHORIC TRIAMIDES, THE ALKYL RADICALS IN SAID ORGANOPHOSPHORUS COMPOUND CONTAINING 1 TO 8 CARBON ATOMS, THE MOLAR RATIO OF TRANSITION METAL HALIDE TO ORGANOPHOSPHROUS COMPOUND BEING WITHIN THE RANGE OF 1:1 TO 1:0.1.
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) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |