<p>The invention generally provides for methods for controlling polymer properties. In particular, invention provides for methods for controlling the comonomer composition distribution of polyolefins such as ethylene alpha-olefin copolymers by altering at least one or more of the following parameters: the molar ratio of hydrogen to ethylene, the molar ratio of comonomer to ethylene, the partial pressure of ethylene, and the reactor temperature without substantially changing the density and/or the melt index of the copolymer.</p>
申请公布号
EP2109629(B1)
申请公布日期
2015.02.25
申请号
EP20080724657
申请日期
2008.01.18
申请人
UNIVATION TECHNOLOGIES, LLC
发明人
KOLB, RAINER;FARLEY, JAMES, M.;SZUL, JOHN, F.;OSSOWSKI, MARK, P.