A polypropylene-based resin composition containing 0.001 to 10.0 parts by weight of benzoic acid with or without substituent(s) on its benzene ring and/or an acid anhydride of benzoic acid, with or without substituents on its benzene rings, to 100 parts by weight of a polypropylene-based resin is disclosed. The resin can generate mouldings with improved rigidity or transparency.
INTERNAL AND EXTERNAL DONOR COMPOUNDS FOR OLEFIN POLYMERIZATION CATALYSTS II
申请人:BASF Corporation
公开号:EP2539375A2
公开(公告)日:2013-01-02
EP2782938A1
申请人:——
公开号:EP2782938A1
公开(公告)日:2014-10-01
HIGH ACTIVITY CATALYST FOR OLEFIN POLYMERIZATION
申请人:BASF Corporation
公开号:EP2782938B1
公开(公告)日:2016-08-31
High Activity Catalyst Component for Olefin Polymerization and Method of Using the Same
申请人:Chang Main
公开号:US20120116031A1
公开(公告)日:2012-05-10
A catalyst system containing (a) a solid catalyst component containing a titanium halide, a magnesium halide, a first internal electron donor compound, and a second internal electron donor compound, (b) an organoaluminum compound, and (c) an external electron donor compound is disclosed. The first internal electron donor compound contains at least one ether group and at least one ketone group. The second internal electron donor compound is a 1,8-naphthyl diester compound. Methods of polymerizing or copolymerizing alpha-olefins using the catalyst system also are disclosed.