The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 01, 2008
Filed:
Sep. 11, 2002
Kartin Köhler, Dossenheim, DE;
Herbert Schumann, Berlin, DE;
Birgit Corinna Wassermann, Berlin, DE;
Wilfried Wassermann, Berlin, DE;
Katharina Lange, Berlin, DE;
Sebastian Dechert, Berlin, DE;
Markus Hummert, Berlin, DE;
Stefan Schutte, Berlin, DE;
Walter Kaminsky, Pinneberg, DE;
Andrea Eisenhardt, Hamburg, DE;
Björn Heuer, Hamburg, DE;
Andre Laban, Klein Nordende, DE;
Kartin Köhler, Dossenheim, DE;
Herbert Schumann, Berlin, DE;
Birgit Corinna Wassermann, Berlin, DE;
Wilfried Wassermann, Berlin, DE;
Katharina Lange, Berlin, DE;
Sebastian Dechert, Berlin, DE;
Markus Hummert, Berlin, DE;
Stefan Schutte, Berlin, DE;
Walter Kaminsky, Pinneberg, DE;
Andrea Eisenhardt, Hamburg, DE;
Björn Heuer, Hamburg, DE;
Andre Laban, Klein Nordende, DE;
Merck Patent GmbH, Darmstadt, DE;
Abstract
The invention relates to the use of nitrogenous aluminium organyl complexes of general formula (I) as co-catalysts in heterogeneous polymerisation reactions of propene. In said formula: R, R', Rand R′ independently of one another represent branched or unbranched C-Calkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl or alkynyl; Rrepresents unsubstituted, monoalkylated or polyalkylated and/or monofluorinated or polyfluorinated aromatic hydrocarbons from group (II); Rand Rindependently of one another represent CH, CFoder C(R); m stands for 0, 1 or 2; n stands for 0, 1 or 2; o stands for 0 or 1, all independently of one another. Said systems exhibit improved characteristics in terms of activity and stereoselectivity in comparison to conventional co-catalysts such as AlEtand can act simultaneously as co-catalysts and stereoselectivity promoters