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    14.
    发明专利
    未知

    公开(公告)号：DE59103383D1

    公开(公告)日：1994-12-08

    申请号：DE59103383

    申请日：1991-03-09

    Applicant: BASF AG

    Inventor： BUESCHGES ULRICH DR ,  SAIVE ROLAND DR

    IPC: C08F4/629 ,  C08F4/685 ,  C08F10/00 ,  C08F10/02

    Abstract: A transition-metal catalyst component for a Ziegler catalyst system, obtainable by 1) mixing, in a solvent, an inorganic, oxidic carrier with 1.1) a vanadium trihalide/alcohol complex of the formula VY3nZ-OH, where Y is chlorine or bromine, N is from 1 to 6, and Z is a monovalent, saturated, aliphatic or araliphatic hydrocarbon radical having not more than 10 carbon atoms, and 1.2) a titanium trihalide or a titanium trihalide/aluminum trihalide complex, where the halogen can be chlorine and/or bromine, or a titanium trihalide complex of the formula TiY3. nZ-OH or a mixture thereof, where Y is chlorine or bromine, n is from 1 to 6, and Z is a monovalent, saturated, aliphatic or araliphatic hydrocarbon radical having not more than 10 carbon atoms or a mixture thereof, and 1.3) a zirconium tetrahalide, where the halogen can be chlorine and/or bromine, 2) removing the solvent by evaporation, 3) mixing the solid-phase intermediate from step (2) with 3.1) an organoaluminum catalyst component of the formula AlRmX3-m, where R is a C1- to C18 - hydrocarbon radical, m is from 1 to 3, and X is OR, chlorine, bromine or hydrogen, and 3.2) an organic carboxylate or an organosilicon compound or a mixture thereof in an organic solvent, and 4) if desired, isolating the solid-phase intermediate by filtration, washing and drying. and the use thereof for the homopolymerization or copolymerization of ethane are described.

    15.
    发明专利
    未知

    公开(公告)号：DE4231749A1

    公开(公告)日：1994-03-24

    申请号：DE4231749

    申请日：1992-09-23

    Applicant: BASF AG

    Inventor： MUELLER HANS-JOACHIM DR ,  FOLLMER GODOFREDO DR ,  KONRAD RAINER DR ,  SAIVE ROLAND DR ,  LUX MARTIN DR ,  GOERTZ HANS-HELMUT DR ,  FUNK GUIDO DR

    IPC: C08F4/02 ,  C08F4/22 ,  C08F4/24 ,  C08F10/00

    Abstract: Process for the preparation of a supported catalyst for the polymerisation of alpha -olefins, in which (1) a support gel containing silicon dioxide is prepared by (1.1) introducing a sodium or potassium waterglass solution into a rotating stream of an aqueous mineral acid both longitudinally and tangentially to the stream, spraying the silicic acid hydrosol thus formed in droplet form into a gaseous medium, allowing it to solidify into a hydrogel and freeing the hydrogel thus obtained of salt by washing without prior aging, (1.2) drying the hydrogel resulting from (1.1) to form the support gel, and (2) the support gel (1) is loaded with chromium trioxide or a chromium compound which can be converted into chromium trioxide under the conditions of the process step (3), which results in a chromium-containing support gel, and (3) the chromium-containing support gel (2) is heated in an anhydrous gas stream containing oxygen in a concentration of over 10% by volume for from 10 to 1000 minutes at from 400 to 1100 DEG C, the hydrogel resulting from the process step (1.1) being dried in the process step (1.2) over a time of not more than 60 seconds in a shaping flash dryer at an inlet temperature of from 80 to 400 DEG C .

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