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    Ziegler-Natta type catalyst system for polymerising propylene¨ - is based on solid component from titanium cpd., magnesium organo-oxy halide, halogen and carboxylic acid deriv., with aluminium cpd.
    44.
    发明专利
    Ziegler-Natta type catalyst system for polymerising propylene¨ - is based on solid component from titanium cpd., magnesium organo-oxy halide, halogen and carboxylic acid deriv., with aluminium cpd. 未知

    公开(公告)号：DE4027809A1

    公开(公告)日：1992-03-05

    申请号：DE4027809

    申请日：1990-09-01

    Applicant: BASF AG

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

    IPC: C08F4/646 ,  C08F4/647 ,  C08F10/06 ,  C08L23/10

    Abstract: System (I) is based on (A) Ti-contg. solid component contg. (A1) Ti-cpd. (A2) Mg cpd. of formula Mg(OR1)X R1 = 1-10C alkyl, 6-10 C aryl, or alkylaryl or 5-7 membered cycloalkyl, opt. contg. 1-4C alkyl gps. X = Cl or Br, (A3) halogen (A4) carboxylic acid derivs. (B) Al cpd. and opt. (C) other electron donor cpds. Also claimed are (i) prepn. of (I) by (1) suspending finely divided carrier material in (II) in liq. alkane at 10-120 deg.C. (2) treating suspension with 0.1-10 M soln. of (A2) in liq. alkane (3) adding to this mixt. after 30-120 minutes at 10-150 deg.C 0.2-5 mol halogen or hydrogen halide per mol. Mg of (A2) (4) after 60-300 minutes treating reaction prod. at 10-150 deg.C with per mol. Mg 0.1-5 mol 1-8C alkanol 1-20 mol halide or alcoholate of 3- or 4-valent Ti and 0.01-1 mol. (A4), (5) filtering off solid (I) and washing (I) with liq. alkane, and (ii) prepn. of polymers (III) of propylene (IV) by polymerisation at 20-150 deg.C and 1-100 bar using (I). USE/ADVANTAGE - Prodn. of (IV) homopolymers and copolymers with minor amts. of other 2-12C alpha, beta-unsatd. olefinic cpds. (I) have higher productivity and improved stereospecificity partic. in gas phase polymerisation, (III) have very small proportion of fines (less than 0.2mm) low Cl content, and good mechanical properties. (6pp Dwg.No.0/0)

    46.
    发明专利
    未知

    公开(公告)号：DE3936856A1

    公开(公告)日：1991-05-08

    申请号：DE3936856

    申请日：1989-11-06

    Applicant: BASF AG

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

    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.

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