22.
    发明专利
    未知

    公开(公告)号:DE10352105A1

    公开(公告)日:2005-06-02

    申请号:DE10352105

    申请日:2003-11-04

    Applicant: BASF AG

    Abstract: The invention relates to a process for preparation of homopolymers composed of oxiranes, or of copolymers composed of oxirans and comonomers, via anionic polymerization, which comprises carrying out a polymerization in the presence of a quaternary ammonium and/or phosphonium compound and of a mononuclear organylaluminum compound.

    24.
    发明专利
    未知

    公开(公告)号:DE10158500A1

    公开(公告)日:2003-06-12

    申请号:DE10158500

    申请日:2001-11-28

    Applicant: BASF AG

    Abstract: The invention relates to mixtures containing linear block copolymers consisting of vinyl aromatic monomers and dienes, of structure (I) S 1 -B 1 -S 2 and (II) S 3 -B 2 -S 4 , wherein S 1 represents a block of vinyl aromatic monomers having a number average molar mass M n of between 40,000 and 100,000 g/mol; S2, S3 and S 4 respectively represent blocks of vinyl aromatic monomers having a number average molar mass M n of between 5,000 and 20,000 g/mol; and B 1 and B 2 respectively represent blocks of dienes or copolymer blocks of dienes and vinyl aromatic monomers having a number average molar mass M n of between 15,000 and 40,000 g/mol. The ratio of the block copolymers (I)/(II) is between 0.6 and 2.

    26.
    发明专利
    未知

    公开(公告)号:DE10152116A1

    公开(公告)日:2003-04-30

    申请号:DE10152116

    申请日:2001-10-23

    Applicant: BASF AG

    Abstract: A method for the production of impact-resistant moulding materials by anionic polymerization of vinyl aromatic monomers in the presence of rubber in a continuously through-flown reactor cascade consisting of at least two reactors. The vinyl aromatic monomers are fed to the reactors of the reactor cascade in partial flows and an anionic initiator and rubber are fed to at least the first reactor. The reactor cascade consists of backmixed reactors.

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