METHOD OF PRODUCING HIGHLY TRANSPARENT POLYPROPYLENE INCLUDING PREPOLYMERIZATION STEP
摘要
Disclosed is a method of preparing a highly transparent polypropylene amprising a step of prepolymerizing an a-olefin and a vinyl cyclic saturated hydrocarbon in the presence of a Zegler-Natta catalyst and an external electron donor, wherein a step of adding and prepolymerizing the a-olefin is followed by a step of adding and prepolymerizing the vinyl cyclic saturated hydrocarbon. The method provides polypropylene having superior tacticity and transparency with not decreasing the activity of the polymerization catalyst at the polymerization of propylene.
申请公布号
WO2009045043(A3)
申请公布日期
2009.06.25
申请号
WO2008KR05775
申请日期
2008.10.01
申请人
LG CHEM, LTD.;LEE, NAN-YOUNG;PARK, CHURL-YOUNG;LEE, JIN-WOO;LEE, RO-MY;IM, DONG-RYUL