95.
    发明专利
    未知

    公开(公告)号:DE59303248D1

    公开(公告)日:1996-08-22

    申请号:DE59303248

    申请日:1993-10-04

    Applicant: BASF AG

    Abstract: A process for the preparation of block copolymers of styrene or equivalents thereof on the one hand and of butadiene or equivalents thereof on the other hand by sequential anionic polymerisation, in which firstly one first monomer and the organometallic compound serving as initiator are combined to form a reaction mixture, and the reaction is continued until at least some of the first monomer has been consumed and at least one further monomer is then added and in each case reacted partly or fully, characterised in that the polymerisation is carried out continuously in a manner known per se in a tubular reactor, where the reaction of one monomer in each case is carried out in one reactor section (zone) in each case, and at least two reactor sections are separated by a mixing zone.

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