A PROCATALYST FOR POLYMERIZATION OF OLEFINS
    1.
    发明公开

    公开(公告)号:EP3383926A1

    公开(公告)日:2018-10-10

    申请号:EP16802041.0

    申请日:2016-11-28

    摘要: The present invention relates to a procatalyst for polymerization of olefins, which procatalyst is based on a magnesium compound of the formula MgR'R" wherein R' is an alkoxide or aryloxide group and wherein R" is an alkoxide or aryloxide group or halogen, preferably a magnesium dialkoxide compound, that has been reacted with a tetravalent titanium halide, an activator being a monoester and an internal donor represented by a compound according to formula B:wherein each R80 group is independently a linear, branched or cyclic hydrocarbyl group selected from alkyl, alkenyl, aryl, aralkyl, or alkylaryl groups, and one or more combinations thereof, preferably having from 1 to 30 carbon atoms; R81, R82, R83, R84, R85, and R86 are each independently selected from hydrogen or a linear, branched or cyclic hydrocarbyl group, selected from alkyl, alkenyl, aryl, aralkyl, or alkylaryl groups, and one or more combinations thereof, preferably having from 1 to 20 carbon atoms; R87 is a hydrogen or a linear, branched or cyclic hydrocarbyl group, selected from alkyl, alkenyl, aryl, aralkyl, alkoxycarbonyl or alkylaryl groups, and one or more combinations thereof, preferably having from 1 to 20 carbon atoms; N is nitrogen atom; O is oxygen atom; and C is carbon atom. Moreover, the present invention relates to a polymerization catalyst system comprising the procatalyst, a co-catalyst and optionally an external electron donor; to a process of making a polyolefin, preferably a polypropylene by contacting an olefin with the catalyst system; to a polyolefin, preferably a polypropylene, obtained by or obtainable by the process; to a polyolefin, preferably a polypropylene, having a molecular weight distribution of between 3 and 15, a molecular weight (Mw) of between 200,000 to 1,000,000 g/mol, a melting temperature of more than 145 °C, a value for the xylene solubles of less than 4 wt.% and a shaped article therefrom.