Patents by Inventor Andre Laban

Andre Laban has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Catalyst systems for Ziegler-Natta propene polymerisation
    Patent number: 7351678
    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?, R1 and R1? independently of one another represent branched or unbranched C1-C7 alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl or alkynyl; R2 represents unsubstituted, monoalkylated or polyalkylated and/or monofluorinated or polyfluorinated aromatic hydrocarbons from group (II); R3 and R4 independently of one another represent CH2, CF2 oder C(R1)2; 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.
    Type: Grant
    Filed: September 11, 2002
    Date of Patent: April 1, 2008
    Assignee: Merck Patent GmbH
    Inventors: Kartin Köhler, Herbert Schumann, Birgit Corinna Wassermann, Wilfried Wassermann, Katharina Lange, Sebastian Dechert, Markus Hummert, Stefan Schutte, Walter Kaminsky, Andrea Eisenhardt, Björn Heuer, Andre Laban
  • Catalyst systems for ziegler-natta propene polymerisation
    Publication number: 20040242408
    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′, R1 and R1′ independently of one another represent branched or unbranched C1-C7 alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl or alkynyl; R2 represents unsubstituted, monoalkylated or polyalkylated and/or monofluorinated or polyfluorinated aromatic hydrocarbons from group (II); R3 and R4 independently of one another represent CH2, CF2 oder C(R1)2; 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 AlEt3 and can act simultaneously as co-catalysts and stereoselectivity promoters.
    Type: Application
    Filed: April 8, 2004
    Publication date: December 2, 2004
    Inventors: Katrin Kohler, Herbert Schumann, Birgit Corinna Wassermann, Wilfried Wassermann, Katharina Lange, Sebastian Dechert, Markus Hummert, Stefan Schutte, Walter Kaminsky, Andrea Eisenhardt, Bjorn Heuer, Andre Laban
  • Catalyst system for the Ziegler-Natta polymerization of olefins
    Patent number: 6534606
    Abstract: Described are catalyst systems having aluminium alkyl complexes of the formula (I) described herein applied to magnesium chloride, SiO2 or SiO2 in combination with MgCl2 as support in the presence of titanium halides or vanadium halides and internal and, if desired, external donors act both as cocatalysts and as stereoselectivity promoters in heterogeneous polymerizations of &agr;-olefins. Also described are polymerization methods using these catalyst systems.
    Type: Grant
    Filed: March 8, 2001
    Date of Patent: March 18, 2003
    Assignee: Merck Patent Gesellschaft Mit Beschränkter Haftung
    Inventors: Katrin Köhler, Eike Poetsch, Herbert Schumann, Sebastian Dechert, Walter Kaminsky, Andre Laban, Manfred Arnold, Jana Knorr, Birgit Corinna Wassermann
  • Catalyst system for the Ziegler-Natta polymerization of olefins
    Publication number: 20020173603
    Abstract: Described are catalyst systems having aluminium alkyl complexes of the formula (I) described herein applied to magnesium chloride, SiO2 or SiO2 in combination with MgCl2 as support in the presence of titanium halides or vanadium halides and internal and, if desired, external donors act both as cocatalysts and as stereoselectivity promoters in heterogeneous polymerizations of &agr;-olefins. Also described are polymerization methods using these catalyst systems.
    Type: Application
    Filed: March 8, 2001
    Publication date: November 21, 2002
    Inventors: Katrin Kohler, Eike Poetsch, Herbert Schumann, Sebastian Dechert, Walter Kaminsky, Andre Laban