Simple production method for supported catalysts used in the production of polyolefins

    公开(公告)号:DE19806435A1

    公开(公告)日:1999-08-19

    申请号:DE19806435

    申请日:1998-02-17

    Applicant: BASF AG

    Abstract: Supported catalyst systems are obtained by reacting support materials with organic compounds of alkali, alkaline earth or Main Group III or IV metals in an inert solvent and then reacting the suspension with a metallocene complex and a metallocenium ion-forming compound without removing solvent or isolating the first-stage product. A process for the production of a supported catalyst system comprises (1) reacting an organic or inorganic support material in an inert solvent with a metal compound of formula (I): M (R )r(R )5(R )t(R )u (I) in which: M = an alkali metal, alkaline earth metal or a Main Group III or IV metal; R = H, 1-10C alkyl, 6-15C aryl, or alkyl-aryl or aralkyl with 1-10C alkyl and 6-20C aryl groups; R -R = H, halogen, 1-10C alkyl, 6-15C aryl, or alkyl-aryl, aralkyl, alkoxy, aryloxy or dialkylamino (all with 1-10C alkyl and/or 6-20C aryl groups); r = 1-4; s, t, u = 0-3; (r+s+t+u) = the valency of M and then (2) reacting the suspension obtained with a metallocene complex and a metallocenium ion-forming compound, without removing the solvent and without isolating the pretreated support material from stage (1).

    Supported catalysts for ethylene and propylene polymerization

    公开(公告)号:DE19821949A1

    公开(公告)日:1999-11-18

    申请号:DE19821949

    申请日:1998-05-15

    Abstract: Preparation of a supported catalyst by production of a copolymer with leaving group-containing comonomer units, polymer like reaction of the copolymer with an optionally substituted cyclopentadiene compound, and reaction of the copolymer with a mono-Cp-metallocene compound is new. A supported catalyst is prepared by: (1) Production of copolymer containing at least the monomer units of formula (I) and (II): A = a direct chemical bond or a group (A); X = H, optionally substituted aryl, optionally branched alkyl, or alkenyl; n = 1-8. (2) The polymer like reaction of the copolymer with a cyclopentadiene compound (III) to give a corresponding copolymer in which some of the exit groups X are substituted by a residue (III'). R -R = H, 1-10C alkyl, optionally substituted phenyl, or the residue group QR R X ; Q = C, CR R C, Ge, or Si, R , R each = H, Me, Et, or Ph, X = halogen, methoxy or ethoxy; and (3) the reaction of the copolymer modified under (2) with a metallocene compound (IV): Cp = optionally substituted cyclopentadienyl, Ti, Zr, or Hf; X = halogen, H, 1-10C alkyl, 1-10C alkoxy or amido, where the various X substituents have different meanings. Independent Claims are included for: (A) A supported metallocene catalyst; (B) a copolymer obtainable as in (1) and (2) above as a support material for metallocene catalysts; (C) a process for the polymerization of ethylene or propylene, or copolymerization of ethylene or propylene with 3-8C alpha-olefins in the presence of a supported metallocene catalyst.

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