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    13.
    发明专利
    未知

    公开(公告)号：DE3612376A1

    公开(公告)日：1987-10-15

    申请号：DE3612376

    申请日：1986-04-12

    Applicant: BASF AG

    Inventor： MUELLER-MALL RUDOLF DR ,  FUNK GUIDO DR ,  BACHL ROBERT DR ,  HENNENBERGER PETER DR ,  KOLK ERICH DR

    IPC: C08F2/06 ,  C08F2/14 ,  C08F2/18 ,  C08F10/02 ,  C08F210/16

    Abstract: A process for the continuous preparation of finely divided homopolymers and copolymers of ethene by catalytic polymerization in a circular tube reactor using a liquid alkane as reaction medium in which the ethene or ethene/comonomer mixture to be polymerized is present in dissolved form and the polymer formed is present in suspended form and running the reaction mixture as a cycle stream to which the feed materials are added by bleeding in and from which the polymer formed is withdrawn by bleeding out reaction mixture, comprising (a) maintaining the mean concentration Cm of polymer in the cycle stream at a value within a certain range and (b) effecting the bleeding out of reaction mixture at a point of the cycle stream at which the concentration of polymer has a value which is lower than the mean concentration Cm by a distinct and definite amount.

    PROCESS FOR PRODUCING HOMO AND COPOLYMERS OF ALPHA-OLEFINS WITH A ZIEGLER TYPE CATALYTIC SYSTEM
    15.
    发明专利
    PROCESS FOR PRODUCING HOMO AND COPOLYMERS OF ALPHA-OLEFINS WITH A ZIEGLER TYPE CATALYTIC SYSTEM 未知

    公开(公告)号：DE3164993D1

    公开(公告)日：1984-08-30

    申请号：DE3164993

    申请日：1981-04-09

    Applicant: BASF AG

    Inventor： BACHL ROBERT DR ,  KLAERNER PETER DR ,  SCHWEIER GUENTHER DR ,  EHLERS EHLER

    IPC: C08F4/64 ,  C08F10/00

    Abstract: A process for the preparation of homopolymers and copolymers of alpha -monoolefins by polymerizing the monomer or monomers with a Ziegler catalyst system comprising (1) a titanium-containing catalyst component and (2) a relevant conventional organo-aluminum compound, (1.1) the catalyst component (1) having been prepared by (1.1.1) milling a titanium compound (I) of the formula TiCl3.z(AlCl3) or ClmTi(OB)4-m, where z is from 0 to 0.5, m is from 0 to 3 and B is alkyl, together with (1.1.2) a magnesium alcoholate (II) and, if desired, (1.1.3) a metal chloride (III) of the formula AlCl3, ZnCl2 or MnCl2, to form a milled product (IV), in which polymerization process a catalyst component (1) is employed, in the preparation of which (1.2) the milled product (IV) obtained according to (1.1) is brought together, in an additional step (1.2.1), with (1.2.2) an alkanol (V) and (1.2.3) a liquid alkane (VI), to form a suspension (VII), and thereafter (1.3), in a further additional step (1.3.1), there is added, to the suspension (VII) obtained according to (1.2), (1.3.2) a metal compound (VIII) of a certain type, the metal being aluminum, silicon or titanium, while preserving the suspension state, the product (IX), which results from stage (1.3) and is present as a solid phase in the suspension, constituting the titanium-containing catalyst component (1).

    Process for the preparation of a vanadium-containing catalyst component for Ziegler catalyst systems
    16.
    发明专利
    Process for the preparation of a vanadium-containing catalyst component for Ziegler catalyst systems 未知

    公开(公告)号：DE3126477A1

    公开(公告)日：1983-01-20

    申请号：DE3126477

    申请日：1981-07-04

    Applicant: BASF AG

    Inventor： BACHL ROBERT DR ,  HOEHR LOTHAR DR ,  KLAERNER PETER DR ,  ZIEGLER WALTER DR DIPL CHEM

    IPC: C08F4/64 ,  C08F4/68 ,  C08F10/00 ,  C08F4/52

    Abstract: The process according to the invention is characterised in that the vanadium-containing catalyst component (1) is obtained by first (1.1), in a first step, (1.1.1) reacting an alkanol containing at least three carbon atoms and at least two hydroxyl groups and (1.1.2) an alkylaluminium compound in a liquid, inert hydrocarbon, giving a mixture of a solid and a liquid, then (1.2), in a second step, (1.2.1) reacting the solid obtained from step (1.1) and (1.2.2) a transition-metal compound from the series comprising certain vanadium compounds in a liquid, inert hydrocarbon, again giving a mixture of a solid and a liquid, and then (1.3), if necessary in a third step, separating, if desired washing and drying the solid from the mixture produced in step (1.2); and isolating the novel vanadium-containing catalyst component (1) in this way with the solid obtained as a mixture in step (1.2) or as a pure substance in step (1.3). The vanadium-containing catalyst component (1) allows very good regulation of the molecular weights of the polymers by means of hydrogen and has good productivity.

    Process for the preparation of a transition metal-containing catalyst component for Ziegler catalyst systems
    19.
    发明专利
    Process for the preparation of a transition metal-containing catalyst component for Ziegler catalyst systems 未知

    公开(公告)号：DE3324136A1

    公开(公告)日：1985-01-17

    申请号：DE3324136

    申请日：1983-07-05

    Applicant: BASF AG

    Inventor： WARZELHAN VOLKER DR ,  BALL WOLFGANG DR ,  BACHL ROBERT DR

    IPC: C08F4/14 ,  C08F4/16 ,  C08F4/20 ,  C08F4/655 ,  C08F10/00 ,  C08F4/52

    Abstract: The invention relates to a process for the preparation of a transition metal-containing catalyst component (1) for Ziegler catalyst systems, in which (1.1) first (1.1.1) a finely divided, porous, inorganic, oxidic substance (I) as support material and (1.1.2) a solution (II) as obtained on combining (IIa) an alcohol and (IIb) a transition-metal composition, are brought into contact with one another to form a suspension (III), this suspension is evaporated to dryness, forming a solid-phase intermediate (IV), and (1.2) then (1.2.1) the solid-phase intermediate (IV) obtained from step (1.1) and (1.2.2) an organoaluminium compound (V) dissolved in an organic solvent are brought into contact with one another to form a suspension, the solid-phase product (VI) resulting as the suspended material being the transition-metal catalyst component (1), characterised in that the transition-metal composition (IIb) employed in step (1.1) is composed in a certain way of (IIb1) a vanadium trihalide, (IIb2) a titanium halide and (IIb3) a zirconium tetrahalide.

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