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.
申请公布号
US2008033127(A1)
申请公布日期
2008.02.07
申请号
US20050628165
申请日期
2005.06.20
申请人
JIANG PEIJUN;SHUTT JOHN R;SPEED CHARLES S;HAGERTY ROBERT O;SHIRODKAR PRADEEP P
发明人
JIANG PEIJUN;SHUTT JOHN R.;SPEED CHARLES S.;HAGERTY ROBERT O.;SHIRODKAR PRADEEP P.