4.
    发明专利
    未知

    公开(公告)号:DE59700547D1

    公开(公告)日:1999-11-18

    申请号:DE59700547

    申请日:1997-08-01

    Applicant: BASF AG

    Abstract: A process for the production of an essentially syndiotactic and partially crystalline polymer (I) containing vinyl aromatic monomers is claimed. (I) is prepared form a reaction mixture containing vinyl aromatic compounds (II), metallocene complexes (III) and one or co-catalysts (IV) consisting of strong, neutral Lewis acid or Bronsted acid cations. The components are mixed prior to addition to the reactor. An apparatus is also claimed comprising a reservoir to contain a mixture of (II) and (IV), a reservoir to contain (III) plus means to dose the contents of the 2 reservoirs to a pre-mixer that is connected to the reactor vessel.

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