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    24.
    发明专利
    未知

    公开(公告)号：DE59103309D1

    公开(公告)日：1994-12-01

    申请号：DE59103309

    申请日：1991-03-09

    Applicant: BASF AG

    Inventor： BUESCHGES ULRICH DR ,  SAIVE ROLAND DR ,  FOLLMER GODOGREDO 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 VY3.nZ-OH, where Y is chlorine or bromine, n is from 1 to 6, and Z is a monovalent, saturated, aliphatic, aromatic or araliphatic hydrocarbon radical having not more than 10 carbon atoms, and 1.2) a titanium halide 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 mixtures thereof, where Y is chlorine or bromine, n is from 1 to 6, and Z is a monovalent, saturated, aliphatic, aromatic or araliphatic hydrocarbon radical having not more than 10 carbon atoms, and 1.3) a compound of the formula BXnYmRp or SiXnYmRq or mixtures thereof, where X is OR, Y is chlorine, bromine or hydrogen, and R is a C1- to C18-hydrocarbon radical, with the proviso that n>0 and n+m+p=3 or n+m+q=4, 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 ethene are described.

    Titanium-contg. suspension components for Ziegler catalysts - prepd. by reacting titanium tetra:chloride, alkylaluminium cpd. and lower alpha-olefin in inert organic liq., isolating suspended fine particle solid prod. obtd., etc.
    27.
    发明专利
    Titanium-contg. suspension components for Ziegler catalysts - prepd. by reacting titanium tetra:chloride, alkylaluminium cpd. and lower alpha-olefin in inert organic liq., isolating suspended fine particle solid prod. obtd., etc. 未知

    公开(公告)号：DE4307649A1

    公开(公告)日：1993-09-23

    申请号：DE4307649

    申请日：1993-03-11

    Applicant: BASF AG

    Inventor： EVERTZ KASPAR DR ,  SAIVE ROLAND DR ,  KOELLE PETER DR ,  KONRAD RAINER DR ,  WEBER SIEGFRIED DR ,  FOLLMER GODOFREDO DR

    IPC: C08F2/34 ,  C08F2/44 ,  C08F4/642 ,  C08F4/65 ,  C08F10/02

    Abstract: Titanium-contg. suspension components (I) for Ziegler catalysts are prepd. by (1) reacting TiCl4, alkyl aluminium cpd. and 2-8C alpha-olefin at less than 0 deg.C in an inert organic liquid having a viscosity greater than 5 mm2/s at the reaction temp. to give a suspension fine particle solid prod. (A); (2) isolating (A); (3) resuspending (A) in the same or a different inorganic liq.; ( ) subjecting (A) to strong mechanical shear and/or ultrasonic energy; and (5) adding 5-1000 wt.% (w.r.t. (A)) antistatic agent. The reaction temp. in (I) is pref. -30 to -10 deg.C. Pref. in (4) the shear step is for 10-80 hrs., at 0-40 deg.C and the ultrasonic energy step is for 10-30 hrs. at 0-40 deg.C. The ultra high mol.wt. ethylene homo- and copolymers are prepd. by (a) reacting ethylene or ethylene/copolymerisable cpd. at 60-125 deg.C and 5-70 bar; (b) (co)polymerising from the gas phase in a bed comprising fine (co)polymer particles having an average particle size less than or equal to 1mm, using a Ziegler catalyst contg. (I) in the presence of an anti-static agent and opt. a mol.wt. regulator, with the heat of polymerisation being removed by cooling the waste gases; and (c) continually extracting the (co)polymer. USE/ADVANTAGE - The use of (I) in the gas phase prepn. of ultrahigh mol.wt. ethylene homo- and copolymer is claimed. The obtd. (co)polymers have improved impact strength without a deterioration in sinterability of the (co)polymer particles.

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