公开(公告)号：US3925341A

公开(公告)日：1975-12-09

申请号：US41906073

申请日：1973-11-26

Applicant: BASF AG

Inventor： MUELLER-TAMM HEINZ ,  SCHICK HANNES ,  RAU WOLFGANG ,  HENNENBERGER PETER

IPC: C08F6/00 ,  B29B9/00 ,  B29B9/06 ,  B29B9/16 ,  C08F6/02 ,  C08F6/06 ,  C08F8/00 ,  C08F6/28

CPC classification number: C08F6/02 ,  C08F8/00 ,  C08L23/02 ,  C08F10/00

Abstract: A process for working up particulate polyolefins obtained by polymerization carried out with the aid of Ziegler/Natta catalysts. The process of the invention is characterized by a continuous, conventional operation (1) comprising the following integrated sub-stages: (1.1) introducing particulate polyolefin to a melting zone, (1.2) passing the molten polyolefin to a degassing zone, (1.3) transferring the degassed polyolefin to a discharge zone, and (1.4) finally extruding and granulating the resulting polyolefin; and by an important, additional and new feature (2) comprising the addition of an alkenoxide, water and optionally nitrogen to the polyolefin immediately before it passes to the melting zone or while it is in the melting zone. This process makes it possible to produce granular polyolefins of low halogen content in a particularly simple manner.

公开(公告)号：NO137279C

公开(公告)日：1978-02-01

申请号：NO451973

申请日：1973-11-27

Applicant: BASF AG

Inventor： MUELLER-TAMM HEINZ ,  SCHICK HANNES ,  RAU WOLFGANG ,  HENNENBERGER PETER

IPC: C08F6/00 ,  B29B9/00 ,  B29B9/06 ,  B29B9/16 ,  C08F6/02 ,  C08F6/06 ,  C08F8/00 ,  C08J3/12

公开(公告)号：NO137279B

公开(公告)日：1977-10-24

申请号：NO451973

申请日：1973-11-27

Applicant: BASF AG

Inventor： MUELLER-TAMM HEINZ ,  SCHICK HANNES ,  RAU WOLFGANG ,  HENNENBERGER PETER

IPC: C08F6/00 ,  B29B9/00 ,  B29B9/06 ,  B29B9/16 ,  C08F6/02 ,  C08F6/06 ,  C08F8/00 ,  C08J3/12

公开(公告)号：DE2045743A1

公开(公告)日：1972-03-23

申请号：DE2045743

申请日：1970-09-16

Applicant: BASF AG

Inventor： PFANNMUELLER HELMUT ,  URBAN FRIEDRICH ,  KOHNLE JOSEF ,  SCHICK HANNES ,  KOLK ERICH

IPC: C08F10/00 ,  C08F3/02

Abstract: Olefins are (co)polymerised in presence of a catalyst comprising (a) a reaction product of montmorillonite and a transition halide (e.g. TiCl4); and (b) a metal organic cpd. of Groups I-III of the Periodic System (e.g. Al(i-C4H9)3); the catalyst having been prepared outside the polymerisation reactor and then being charged to the reactor, optionally diluted with a pulverulent polyolefin. Procedure results in improved reactivity/time behaviour of the catalyst. Total productivity of the system is increased.

公开(公告)号：AU6290673A

公开(公告)日：1975-05-29

申请号：AU6290673

申请日：1973-11-27

Applicant: BASF AG

Inventor： RAU WOLFGANG ,  HENNENBERGER PETER ,  MUELLER-TAMM HEINZ ,  SCHICK HANNES

IPC: C08F6/00 ,  B29B9/00 ,  B29B9/06 ,  B29B9/16 ,  C08F6/02 ,  C08F6/06 ,  C08F8/00 ,  C08F1/88 ,  C08F47/02

公开(公告)号：AU3655971A

公开(公告)日：1973-06-14

申请号：AU3655971

申请日：1971-12-07

Applicant: BASF AG

Inventor： JOSEFKOHNLE ,  KOHNLE JOSEF ,  SCHICK HANNES ,  GRUBER WOLFGANG

IPC: C08F4/68 ,  C08F10/00 ,  C08F1/56 ,  B01J11/84