公开(公告)号：DE19529240A1

公开(公告)日：1997-02-13

申请号：DE19529240

申请日：1995-08-09

Applicant: BASF AG

Inventor： HUEFFER STEFAN DR ,  KERTH JUERGEN DR ,  KOELLE PETER DR ,  MUELLER PATRIK DR ,  HEMMERICH RAINER DR

IPC: C08F4/02 ,  C08F4/58 ,  C08F4/642 ,  C08F10/00 ,  C08F10/06

Abstract: Ziegler/Natta-type catalyst systems (A), comprising: (a) a solid component contg. a Ti cpd., a Mg cpd., a halogen, a silica gel support (B) and a carboxylate ester as electron donor; (b) an Al cpd. as cocatalyst; and opt. (c) another electron donor. The silica (B) has an average particle dia. of 5-200 mu m and an average prim. particle dia. of 1-10 mu m, and contains cavities or channels with an average dia. of 1-10 mu m and a macroscopic vol. content of 5-20% based on the whole particle. Also claimed are: (i) a process for the prodn. of (A) by reacting (a), (b) and opt. (c) together at 0-150[deg]C and 1-100 bar; (ii) a process for the prodn. of polymers by polymerisation of propylene and opt. comonomers at 20-150[deg]C and 1-100 bar in presence of (A); (iii) polymers of propylene obtd. by this process; and (iv) film, fibres and mouldings made from these polymers.