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    11.
    发明专利
    未知

    公开(公告)号：BR9005591A

    公开(公告)日：1991-09-17

    申请号：BR9005591

    申请日：1990-11-05

    Applicant: BASF AG

    Inventor： SCHWAGER HARALD ,  KOELLE PETER ,  KERTH JUERGEN ,  ZOLK RALF

    IPC: C08F4/60 ,  C08F4/642 ,  C08F4/646 ,  C08F4/649 ,  C08F4/651 ,  C08F4/654 ,  C08F10/00

    Abstract: Catalyst systems of the Ziegler-Natta catalyst type, containing, as active constituents, a) a titanium-containing solid component which contains titanium, magnesium, halogen and a carboxylic acid ester, and, as cocatalyst, b) an aluminium compound and c) optionally further electron-donor compounds, characterised in that they contain in the solid component, as the carboxylic acid ester, a diester of a carboxylic acid of the formula Ia or Ib in which R , R , R and R are identical or different and are hydrogen, C1-C15-alkyl, C7-C15-alkylaryl or 5- to 7-membered cycloalkyl, which may itself carry C1- to C10-alkyl groups. These catalyst systems are particularly suitable for the preparation of polypropylene and copolymers of propylene with minor amounts of other alpha , beta -unsaturated olefinic compounds having 2 to 12 carbon atoms.

    15.
    发明专利
    未知

    公开(公告)号：DE3631534A1

    公开(公告)日：1988-03-24

    申请号：DE3631534

    申请日：1986-09-17

    Applicant: BASF AG

    Inventor： KERTH JUERGEN ,  MUELLER-MALL RUDOLF ,  SCHWEIER GUENTHER

    IPC: C08F4/60 ,  C08F4/64 ,  C08F10/02

    Abstract: Ethene polymers comprising small particles are prepared by means of a Ziegler catalyst system comprising (1) a titanium-containing catalyst component obtained by (1.1) precipitation in an organic liquid comprising (1.1.1) a solution of titanium tetrachloride in a hydrocarbon (1.1.2) a solution of a certain organoaluminium compound in a hydrocarbon and (1.1.3) an alpha-monoalkene, and (2) an aluminium-containing catalyst component, characterised in that (1) is a catalyst component in which (1.1) has been precipitated at relatively low temperatures in an organic liquid which has a relatively high viscosity at the precipitation temperature and comprises (a) a hydrocarbon in liquid form and (b) relatively small amounts of a polymer of an alpha-monoalkene dissolved therein, with the provisos that (i) specific amounts of the organic liquid of the organoaluminium compound and of the alpha-monoalkene are employed per g mol of all the titanium tetrachloride employed, and (ii) specific amounts are precipitated per minute and specific amounts of the alpha- monoalkene are introduced per minute per mol unit of all the titanium tetrachloride employed, and (1.2) the precipitate as in (1.1) has been reacted with an alkyl lithium compound.

    18.
    发明专利
    未知

    公开(公告)号：DE59405315D1

    公开(公告)日：1998-04-02

    申请号：DE59405315

    申请日：1994-05-17

    Applicant: BASF AG

    Inventor： LANGHAUSER FRANZ ,  KERTH JUERGEN ,  MUELLER PATRIK ,  KERSTING MEINOLF ,  SCHWEIER GUENTHER

    IPC: C08F2/34 ,  C08F4/642 ,  C08F4/646 ,  C08F4/68 ,  C08F297/08

    Abstract: PCT No. PCT/EP94/01591 Sec. 371 Date Nov. 9, 1995 Sec. 102(e) Date Nov. 9, 1995 PCT Filed May 17, 1994 PCT Pub. No. WO94/28042 PCT Pub. Date Dec. 8, 1994Multiphase block copolymers of propylene comprising a) a polymer of propylene with from 0 to 5% by weight of further C2-C10 1-alkenes, b) a copolymer of propylene with from 5 to 98% by weight of further C2-C10 1-alkenes, the multiphase block copolymers having a melting point of less than 155 DEG C. and a stiffness (shear modulus G) conforming to the following condition (I): (I) where Ma) denotes the amount of propylene polymer a) and Mco denotes the amount of the multiphase block copolymer. are obtainable in particular by polymerization by means of metallocene-containing catalyst systems.\!

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