Patents by Inventor Kai Hultzsch

Kai Hultzsch 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).

  • Binuclear metal hydride complexes as catalysts for the (co)polymerization of polar monomers
    Patent number: 6291655
    Abstract: In binuclear metal hydride complexes of the formuula (I) the substituents and indices have the following meanings: M is scandium, yttrium, lanthanum or a lanthanide metal, R is hydrogen, halogen, C1-C20-alkyl, C3-C1-cycloalkyl, C6-C15-aryl or C3-C30-organosilyl, where two adjacent radicals R can also form a saturated or unsaturated, cyclic or heterocyclic group having from 4 to 18 carbon atoms, Z is —SiR′2—, —CR′2—, —GeR′2—, —SnR′2—, —BR′— or —O—, R′ is C1-C20-alkyl, C3-C10-cycloalkyl, C6-C15-aryl or alkylaryl having from 1 to 10 carbon atoms in the alkyl part and from 6 to 10 carbon atoms in the aryl part, m is 1 or 2, X is —O—, —S—, —NR″—, —PR″—, —OR″, —SR″, —NR″2 or —PR″2, R″ is hydrogen, C1-C20-alkyl, C3-C10-cycloalkyl, C6-C15-aryl, alkylaryl having from 1 to 10
    Type: Grant
    Filed: August 12, 1999
    Date of Patent: September 18, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Jun Okuda, Kai Hultzsch, Michael Geprägs