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    GRAFT COPOLYMER
    2.
    发明专利
    GRAFT COPOLYMER 失效

    公开(公告)号：JPH11166022A

    公开(公告)日：1999-06-22

    申请号：JP26629498

    申请日：1998-09-21

    Applicant: BASF AG

    Inventor： WUENSCH JOSEF DR ,  ZELLER EDGAR DR

    IPC: C08C19/00 ,  C08F8/00 ,  C08F279/02 ,  C08F290/12

    Abstract: PROBLEM TO BE SOLVED: To produce a graft copolymer having a high stiffness, tensile strength, dimensional stability and toughness by a production method a carried out by using the graft copolymer produced by a free radical polymerization or an ion polymerization. SOLUTION: The graft copolymer is produced by (a) reacting a vinyl aromatic compound with a conjugated diene to provide a polymer A containing a C=C double bond, (b) hydroformylating the C=C double bond of the obtained polymer A in the presence of carbon monoxide, hydrogen and a hydroformylating catalyst to provide a polymer B, (c) isolating the partially or completely formylated polymer B, (d) subjecting the formyl groups of the polymer B to a C-C coupling reaction for taking vinyl aromatic units in to provide a polymer C and (e) reacting the polymer C with a vinyl aromatic compound in the presence of a metallocene catalyst composition.

    7.
    发明专利
    未知

    公开(公告)号：DE19741497A1

    公开(公告)日：1999-03-25

    申请号：DE19741497

    申请日：1997-09-19

    Applicant: BASF AG

    Inventor： WUENSCH JOSEF DR ,  ZELLER EDGAR DR

    IPC: C08C19/00 ,  C08F8/00 ,  C08F279/02 ,  C08F290/12 ,  C08F257/00 ,  C08L25/08 ,  C08J5/00 ,  C08J5/18 ,  D01F6/20

    Abstract: Syndiotactic polystyrene is modified by graft polymerisation to form a shell comprising a hydroformylated aromatic vinyl compound/conjugated diene polymer that has undergone the Wittig reaction. New graft polymers (P) are prepared by the following process : (a) reaction of aromatic vinyl compounds with conjugated dienes to form polymers (A) containing C=C double bonds; (b) hydroformylation of the C=C double bonds in (A), in the presence of carbon monoxide, hydrogen and a hydroformylation catalyst to form a polymer (B); (c) isolation of the at least partially hydroformylated (B); (d) forming C-C bonds in (P) by bridging the formyl groups, whilst incorporating an aromatic vinyl unit to form a polymer (C); and (e) reaction of (C) with aromatic vinyl compounds in the presence of a metallocene catalyst system. Independent claims are also included for (1) the preparation of (P) by the above process, (2) the use of (P) for making fibers, films or molded articles, and (3) fibers, films and molded articles prepared from (P).

    Prepn. of polymers of vinyl:aromatic cpds. using catalyst system
    10.
    发明专利
    Prepn. of polymers of vinyl:aromatic cpds. using catalyst system 未知

    公开(公告)号：DE19500811A1

    公开(公告)日：1996-07-18

    申请号：DE19500811

    申请日：1995-01-13

    Applicant: BASF AG

    Inventor： WUENSCH JOSEF DR ,  FISCHER DAVID DR ,  LUX MARTIN DR ,  LILGE DIETER DR

    IPC: C08F4/642 ,  C08F4/68 ,  C08F4/72 ,  C08F12/04 ,  C08F12/00 ,  C08L25/00

    Abstract: Polymers of vinylaromatic cpds. are prepd. at 0-150 deg C, in presence of a catalyst system comprising (A) at least 2 different metallocene complexes and (B) a cpd. forming metallocenium ions. Pref. the aromatic cpds. have formula (I) (where R = H (pref.) or 1-4C alkyl; R -R = H (pref.), 1-12C (1-4C) alkyl (pref.), or halogen (pref. Cl), or 2 adjacent gps. together form a 4-15C (4-12C) cyclic gp., or Ph, biphenyl, naphthalene or anthracene). The components are metallocene complexes formula (II) (where R -R = H, 1-10C alkyl, 5-7C cycloalkyl (opt. carrying 1-6C alkyl gps. as substits.), 6-15C aryl or arylalkyl, or 2 adjacent gps. form together 4-15C cyclic gps., or Si(R )3; R = 1-10C alkyl, 6-15C aryl or 3-10C cycloalkyl; M = metal or 3rd-6th sub-gps. or of the lanthanide series (pref. metal of 4th sub-gp.); Z -Z = H, halogen (Pref.), 1-10C alkyl (pref.), 1-10C alkoxy (pref.), 6-15C aryl or 1-15C aryloxy; z1-z5 = 0-5; z1+z2+z3+z4+z4+z5 = valency of (M - 1)). (B) The components are open-chain or cyclic alumoxan cpds. of formulae (R )(R )Al-(O-Al(R ))mR (III) or (IV) (where R = 1-4C alkyl; m = 5-30). The polymers are used to produce mouldings (claimed). Use is esp. in electrical and high temp. resistant applications. A simple process gives syndiotactic polymers with wide distribution of mol.wt. The polymers have mol.wt. 10000-10000000 (50000-1000000) and Mw/Mn of 5-100.

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