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    42.
    发明专利
    未知

    公开(公告)号：DE19652312A1

    公开(公告)日：1998-06-18

    申请号：DE19652312

    申请日：1996-12-16

    Applicant: BASF AG

    Inventor： MEHLER CHRISTOF DR ,  GOTTSCHALK AXEL DR ,  STADLER REIMUND PROF DR ,  DENIZLIGIL SELCHUK DR

    IPC: C08F293/00 ,  C08F295/00 ,  C08F297/00 ,  C08G81/02

    Abstract: In a method for the production of linear block copolymers, which contain at least a sequence A-B-C of a block A of radically polymerizable monomers (a), a block B of monomers (b) and a block C of radically polymerizable monomers (c), the monomers (a), (b) and (c), which are different from each other, are made to react with (1) radical polymerization of monomers (c) with a macro radical initiator (I) of general formula Y-B-X-B-Y, in which X and Y are divisible functional groups upon formation of radicals, whereby X can be separated without fission from Y, under conditions leading to the formation of macro radical initiators (II) which contain the sequence Y-B-C, by selectively separating X and by polymerizing (c), (2) radical polymerization of monomers (a) with the macro radical initiator (II) by separating Y and forming linear block copolymers containing the sequence A-B-C. The block copolymers have the sequences A-B-C, A-B-C-B-A, C-B-A-B-C or A-B-C-B-A-B-C-B-A.

    44.
    发明专利
    未知

    公开(公告)号：DE19642489A1

    公开(公告)日：1998-04-16

    申请号：DE19642489

    申请日：1996-10-15

    Applicant: BASF AG

    Inventor： GOTTSCHALK AXEL DR ,  ENGELHARDT RALF ,  WEBER MARTIN DR ,  KNOLL KONRAD DR

    IPC: C08G81/02 ,  C08F297/02 ,  C08F299/00

    Abstract: A process for the preparation of graft copolymers (I) by anionic polymerisation of a polymer (A) containing an anionic chain end and a polymer (B) containing a nitrile group in a solvent is claimed. Preferably (A) is a vinyl aromatic based polymer, a block copolymer consisting of a block of vinyl aromatic monomers and a block of conjugated dienes, preferably polystyrene or polystyrene-polybutadiene. (B) is a copolymer of styrene and acrylonitrile. (B) is titrated with a solution of a organometallic compound, preferably s-butyllithium before mixing with (A) in ethyl benzene.

    Fire-resistant polycarbonate moulding materials for the production of mouldings, film or fibres
    45.
    发明专利
    Fire-resistant polycarbonate moulding materials for the production of mouldings, film or fibres 未知

    公开(公告)号：DE19632675A1

    公开(公告)日：1998-02-19

    申请号：DE19632675

    申请日：1996-08-14

    Applicant: BASF AG

    Inventor： GOTTSCHALK AXEL DR ,  WEBER MARTIN DR ,  JUENGLING STEPHAN DR

    IPC: C08L25/02 ,  C08L33/12 ,  C08L51/04 ,  C08L69/00 ,  C08K5/521 ,  C08K5/523 ,  C09K21/00

    Abstract: Moulding materials (MM), containing: (A) 1-96.9 wt.% halogen-free polycarbonate; (B) 1-96.9 wt.% halogen-free graft copolymer(s), comprising: (b1) 40-80 wt.% graft base consisting of rubber-elastic polymer with a Tg of below 0 deg C; and (b2) 20-60 wt.% grafted shell consisting of: (b21) 50-95 wt.% vinylaromatic monomer of formula (I) and/or methyl methacrylate (MMA); and (b22) 5-50 wt.% (meth)acrylonitrile, MMA and/or maleic anhydride; (C) 1-96.9 wt.% halogen-free thermoplastic copolymer with Mw of less than 400,000 derived from: (c1) 50-95 wt.% monomer(s) as in (b21); and (c2) 5-50 wt.% monomer(s) as in (b22); (D) 0.1-30 wt.% halogen-free thermoplastic copolymer with Mw of at least 500,000 and a narrow mol.wt. distribution, derived from: (d1) 50-100 wt.% MMA; and (d2) 0-50 wt.% other comonomers; (E) 1-25 wt.% halogen-free phosphorus compound(s); and (F) 0-50 wt.% additives. In (I), R = H or 1-8C alkyl; R = 1-8C alkyl; and n = 0-3,

    49.
    发明专利
    未知

    公开(公告)号：DE4416854A1

    公开(公告)日：1995-11-16

    申请号：DE4416854

    申请日：1994-05-13

    Applicant: BASF AG

    Inventor： GOTTSCHALK AXEL DR ,  STADLER REIMUND PROF DR ,  KRAPPE UDO

    IPC: C08L53/00 ,  C08L71/12 ,  C08L25/04 ,  C08L51/00 ,  C08L55/02 ,  C08L33/06 ,  B29D7/01

    Abstract: Multiphase polymer mixtures contain (a) a polymer (A); (b) an A-B block copolymer (B) made up of a block A and of an elastic block B; (c) a B-C block copolymer (C) made of an elastic block B and of a block C; and (d) at least another polymer (D) which is different from (A), (B) and (C) and incompatible with polymer (A). Blocks A, B and C differ from each other, polymer (A) is compatible with block A and incompatible with block C, polymer (D) is compatible with block C and incompatible with block A, elastic block B has a glass transition temperature below +20 DEG C and blocks A, B and C are incompatible with each other.

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