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    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.
    22.
    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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