Patents by Inventor Berth-Jan Deelmann

Berth-Jan Deelmann 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).

  • Polymerization catalysts containing .beta.-diketiminate ligands
    Patent number: 6034258
    Abstract: Transition metal complexes of the formula IL.sub.m MX.sub.n I,whereL is a ligand of the formula II ##STR1## m is 1 or 2, M is a titanium, zirconium, hafnium, vanadium, niobium, tantalum, or a rare earth metal,X is fluorine, chlorine, bromine, iodine, hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl or OR.sup.1,n is 1, 2, 3, or 4 as defined herein, andR.sup.1, R.sup.2, R.sup.3, R.sup.4, and A are as defined herein,and the use of these complexes as catalysts for olefin polymerization are described herein.
    Type: Grant
    Filed: April 16, 1997
    Date of Patent: March 7, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Marc Oliver Kristen, Hans-Helmut Gortz, Berth-Jan Deelmann, Michael Franz Lappert, Wing-Por Leung, Hung-Kay Lee