Polymerization process
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United States of America Patent
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Sep 21, 2010
Grant Date -
Feb 7, 2008
app pub date -
Jun 20, 2005
filing date -
Jun 20, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention relates to a multiple phase polymerization process to produce polyolefins comprising contacting olefins and a homogeneous catalyst or catalyst system at a temperature between the melting point of the dry polymer and 80° C. below the melting point of the dry polymer in the presence of a fluorinated hydrocarbon. This invention also relates to a process to produce polyethylene comprising contacting a homogeneous catalyst or catalyst system with ethylene and from 0 to 40 weight % of one or more C3 to C40 olefin comonomer(s) in the presence of a fluorinated hydrocarbon and optionally a hydrocarbon solvent at a temperature below the reaction medium melting point. This invention also relates to a process to produce polypropylene comprising contacting a homogeneous catalyst or catalyst system with propylene and from 0 to 50 weight % of one or more of ethylene and C4 to C40 olefin comonomer(s) in the presence of a fluorinated hydrocarbon and optionally a hydrocarbon solvent at a temperature below the reaction medium melting point.
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