Coordination catalyst
Abstract
Abstract A COORDINATION CATALYST SYSTEM CAPABLE OF POLYMERIZING ALPHA-OLEFINS AT HIGH EFFICIENCY AND CONSISTING ESSENTIALLY OF A HYDROCARBON-SOLUBLE VANADIUM COMPOUND, E.G., VANADIUM OXTRICHLORIDE, AN ORGANOALUMINUM HALIDE, E.G., DIETHYLALUMINUM CHLORIDE, A HALOGEN-CONTAINING OXIDANT E.G., BENZOTRICHLORIDE AND A HYDROCARBON-SOLUBLE ACTIVATOR WHICH IS MORE REACTIVE WITH ORGANOALUMINUM HALIDES PRESENT DURING POLYMERIZATION THAN IS SAID OXIDANT, E.G., TRIETHYLALUMINUM, THE RATIOS OF ALUMINUM ATOMS, OXIDANT MOLES AND ACTIVATOR MOLES TO VANADIUM ATOMS BEING 3200, 1-2000 AND 0.1-150, RESPECTIVELY. THE HIGH EFFICIENCY OF THIS CATALYST SYSTEM OBVAITES THE NECESSITY FOR REMOVING CATALYST RESIDUES FROM A POLYMER PRODUCED BY ITS USE.
Inventors
- 👤 D Apotheker
- 👤 Gulick N Van
Bibliographic Details
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |