公开(公告)号：BR9606033A

公开(公告)日：1998-09-01

申请号：BR9606033

申请日：1996-12-17

Applicant: HOECHST AG

Inventor： STREB JOHANN ,  RINK THOMAS ,  ZENK ROLAND ,  RIEDEL MICHAEL ,  CABRERA IVAN ,  KAUFMANN WILHELM ,  WISSER THOMAS

IPC: C07F17/00

Abstract: A method for the depletion of inorganic byproducts from product mixtures produced during the synthesis of metallocenes comprises treating the mixture, which contains one or more metallocenes and at least one inorganic byproduct, with a polar extraction agent. Also claimed is the use of polar extraction agents for removing inorganic byproducts from metallocene synthesis product mixtures. Preferably the mixture is a crude metallocene synthesis reaction product. The extraction agent contains 5 - 100 vol.% one or more polar solvents. The amount of inorganic byproducts is reduced to less than 5 wt.%. The byproducts are inorganic salts and / or covalent metal halides.

公开(公告)号：DE19547248A1

公开(公告)日：1997-06-19

申请号：DE19547248

申请日：1995-12-18

Applicant: HOECHST AG

Inventor： KAUFMANN WILHELM DIPL ING ,  WISSER THOMAS DR ,  STREB JOHANN ,  RINK THOMAS ,  ZENK ROLAND DR ,  RIEDEL MICHAEL DR ,  CABRERA IVAN DR

IPC: C07F17/00

Abstract: A method for the depletion of inorganic byproducts from product mixtures produced during the synthesis of metallocenes comprises treating the mixture, which contains one or more metallocenes and at least one inorganic byproduct, with a polar extraction agent. Also claimed is the use of polar extraction agents for removing inorganic byproducts from metallocene synthesis product mixtures. Preferably the mixture is a crude metallocene synthesis reaction product. The extraction agent contains 5 - 100 vol.% one or more polar solvents. The amount of inorganic byproducts is reduced to less than 5 wt.%. The byproducts are inorganic salts and / or covalent metal halides.

公开(公告)号：DE19547247A1

公开(公告)日：1997-06-19

申请号：DE19547247

申请日：1995-12-18

Applicant: HOECHST AG

Inventor： KAUFMANN WILHELM DIPL ING ,  STREB JOHANN ,  WISSER THOMAS DR ,  RINK THOMAS ,  ZENK ROLAND DR ,  RIEDEL MICHAEL DR ,  CABRERA IVAN DR

IPC: C07F17/00

Abstract: Reduction of the concentration of organometallic by-products (I) in product mixtures (II) from metallocene synthesis comprises treating (II) containing a metallocene and (I) with a polar extractant. Also claimed is the use of a polar extractant for reducing the (I) concentration in (II).