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    9.
    发明专利
    未知

    公开(公告)号：DE3681273D1

    公开(公告)日：1991-10-10

    申请号：DE3681273

    申请日：1986-12-19

    Applicant: BASF AG

    Inventor： KERTH JUERGEN ,  VOGT HEINZ

    IPC: C08F4/46 ,  C08F4/60 ,  C08F4/64 ,  C08F10/00 ,  C08F10/02

    Abstract: Finely-divided ethene homopolymers or ethene copolymers with subordinated amts. of 3-8C alpha-monoalkene are prepd. by polymerising the monomer(s) at 30-150 deg.C and 1-200 bar, using a Ziegler catalyst system contg. (1) A Ti-contg. catalyst component, obtd. as ppte. on pptn. in an organic liq. by introducing and contacting, with strong agitation: (1.1) a 0.1-10 molar soln. of TiCl4 in a liq. 5-10C hydrocarbon of satd. aliphatic and/or aromatic nature, (1.2) a 0.1-10 molar soln. of an organic Al cpd. having formula RnAlCl3-n, n=1.5-3; R=1-12C alkyl in a liq. 5-10C hydrocarbon of satd. aliphatic and/or aromatic nature as well as (1.3) a 2-8C alpha-mono alkene, and (2) a tri- 1-12C alkyl Al catalyst component, provided that the atomic ratio Ti from component (1) to the Al from component (2) is 1:1 to 1:200. The novelty consists in using a Ti contg. catalyst component (1) which is pptd. at -30 to +30 deg.C, in an organic liq. having viscosity 1.5-30 sq.m/sec. at the pptn. temp. The liq. consists of (a) a liq. 5-10C hydrocarbon of satd. aliphatic and/or aromatic nature as well as (b) small amts. of a polymer of a 2-6C alpha-mono-alkene dissolved in (a). (i) 2-20 l organic liq., 0.5-5 g.mol. organic Al cpd. and 5-500 g mol alpha-mono-alkene are charged per g.mol TiCl4. (ii) 0.002-0.15 mol. units /min. per mol. unit of the total TiCl4 charged are pptd. and 0.002-1 mol. units/min. alpha-mono-alkene are introduced into the pptn. system.

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