Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – With measuring – sensing – testing – or synthesis operation...
Patent
1996-02-08
1997-07-15
Achutamurthy, Ponnathapura
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
With measuring, sensing, testing, or synthesis operation...
585511, 585512, 585520, 585522, C07C 208, C07C 222, C07C 234
Patent
active
056485816
ABSTRACT:
A method for polymerizing or copolymerizing .alpha.-olefin in a vapor phase condition by supplying to a reactor a catalyst composed of a solid catalyst component containing at least titanium and/or vanadium as well as magnesium and an organic aluminum compound wherein the current due to the electric charge transferred from polymer particles electrified to an electrode disposed at a position where sheet-like polymers will be produced in a reactor, as a result of contact of the polymer particles in the reactor with the electrode is determined, and the polymerization or copolymerization is carried out under such condition where the mean value of current is zero or a positive value. As a result, it becomes possible to prevent production of sheet-like polymers and to stably continue the reaction for polymerization.
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Kobayashi Eiko
Kubo Kunimichi
Niwa Masahiro
Yoshikawa Mamoru
Achutamurthy Ponnathapura
Nippon Petrochemicals Company Limited
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