公开(公告)号：DE19813399A1

公开(公告)日：1999-09-30

申请号：DE19813399

申请日：1998-03-26

Applicant: BASF AG

Inventor： LANGHAUSER FRANZ ,  APPLEYARD DAVID ,  HORTON MURRAY ,  HINGMANN ROLAND ,  SCHWEIER GUENTHER ,  RAUSCHENBERGER VOLKER ,  HENNIG INGOLF ,  LILGE DIETER ,  SCHOENE WERNER ,  KERSTING MEINOLF

IPC: C08F2/34 ,  C08F4/02 ,  C08F4/658 ,  C08F210/06 ,  C08F210/16 ,  D01F6/30

Abstract: A random copolymer (I) of propylene with other 2-10 C 1-alkenes comprises 0.7-1.4 wt.% ethylene comonomer or 0.7-3.0 wt.% 4-10 C 1-alkene. (I) has a solubility in cold xylene of 1.0-2.5 wt.% or 0.75-2.0 wt.% when the comonomer is ethylene or a 4-10C 1-alkene respectively. Independent claims are included for: (i) a process for the preparation of (I) by the gas phase polymerisation of propylene and a 2-10 C 1-alkene at 50-100 degrees C and 15-40 bar in the presence of a Ziegler-Natta catalyst containing: (A) a titanium containing solid component containing at least a halogen containing magnesium compound and an electron donor; (B) an aluminum compound; and (C) at least a further electron donor compound. The ratio of partial pressure of propylene to comonomer is 400:1-15:1 and the molar ratio of (B) to (C) is 20:1-2:1; and (ii) film, fiber or molded articles containing (I).