Gas-phase polymerization of C2-C8-alk-1-enes
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United States of America Patent
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Feb 18, 2003
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N/A
app pub date -
Mar 14, 2000
filing date -
Mar 17, 1999
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Abstract
In a process for the polymerization of C.sub.2 -C.sub.8 -alk-1-enes by means of a Ziegler-Natta catalyst system, in which polymerization is carried out from the gas phase in at least one reaction zone at from 40 to 120.degree. C. and pressures of from 1 to 100 bar, the pressure and temperature in the reaction zone are set so that an operating point formed by these parameters in a pressure-temperature diagram is located at from 0.2 to 5.0 bar below the dew line of the respective reaction mixture above which condensation of the C.sub.2 -C.sub.8 -alk-1-enes occurs.
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