公开(公告)号：CA1333828C

公开(公告)日：1995-01-03

申请号：CA607986

申请日：1989-08-10

Applicant: BASF AG

Inventor： KERTH JUERGEN ,  WERNER RAINER A ,  ZOLK RALF ,  RUEMPLER KLAUS-DIETER ,  SCHWEIER GUENTHER ,  MUELLER-MALL RUDOLF ,  GRUBER WOLFGANG

IPC: C08F2/34 ,  C08F4/02 ,  C08F4/58 ,  C08F4/60 ,  C08F4/64 ,  C08F4/642 ,  C08F297/08

Abstract: Propylene/ethylene block copolymers are prepared by a continuous process in which, in each case in an agitated fixed bed of finely divided polymer from the gas phase, first (I) in a first polymerization zone, propylene is homopolymerized by feeding in a Ziegler-Natta catalyst system consisting of (1) a titanium component which contains titanium, magnesium, chlorine and a phthalic acid derivative, (2) an aluminumalkyl component and (3) a silane component, and (II) in a second polymerization zone, a mixture of propylene and ethylene is polymerized with the propylene homopolymer present in the reaction mixture obtained in the first polymerization zone by feeding in the said reaction mixture. In the process, (A) a titanium component (1) is used which is obtained by a method in which (1.1) first, (1.1.1) in a liquid hydrocarbon, (1.1.2) a finely divided magnesium halide, (1.1.3) an alkanol, (1.1.4) a certain phthalic acid derivative and (1.1.5) titanium tetrachloride are reacted with one another under certain conditions, (1.2) the solid intermediate obtained from (1.1) is extracted with titanium tetrachloride or a liquid alkylbenzene until the remaining solid substance has become substantially richer in magnesium, and (1.3) finally, the solid substance remaining in (1.2) is washed with an alkane in a certain manner, (B) a specific silane is used as (3), and (C) specifically selected polymerization parameters are employed, with relationships between the first and second polymerization zones.

公开(公告)号：CA1333827C

公开(公告)日：1995-01-03

申请号：CA587224

申请日：1988-12-29

Applicant: BASF AG

Inventor： HASENBEIN NORBERT ,  SCHWEIER GUENTHER ,  GROPPER HANS ,  WERNER RAINER A

IPC: C08F255/02 ,  C08F287/00 ,  C09J123/04 ,  C09J151/06

Abstract: Ethylenically unsaturated carboxylic acids and/or carboxylic anhydrides are grafted onto polyolefin blends by a process in which the polyolefin blend consists of from 5 to 49 parts by weight of an ethylene/propylene block copolymer having an ethylene content of less than or equal to 20% by weight and from 51 to 95 parts by weight of a homopolymer or copolymer of ethylene, and the resulting graft copolymer blends are used as adhesion promoters, in particular for polyethylene/ adhesion promoter/steel composites, and for the preparation of ionomers.