Patents by Inventor Stefan Mansel

Stefan Mansel 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).

  • Patent number: 5670683
    Abstract: Cyclopentadineyl compounds of the formula II ##STR1## and formula III ##STR2## their preparation and their use as intermediates in the preparation of metallocene complexes of the formula I.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: September 23, 1997
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Langhauser, Jurgen Kerth, Gunther Schweier, Hans-Herbert Brintzinger, Stefan Mansel
  • Patent number: 5554776
    Abstract: Metallocene complexes of the formula I ##STR1## where M is titanium, zirconium, hafnium, vanadium, niobium or tantalum,X inter alia is fluorine, chlorine, bromine, iodine or hydrogen,R.sup.1 to R.sup.6 inter alia are each hydrogen or C.sub.1 -C.sub.10 -alkyl,Z is silicon, germanium, tin or carbon,Y.sup.1 and Y.sup.2 are each ##STR2## R.sup.9 to R.sup.16 inter alia are each hydrogen or C.sub.1 -C.sub.10 -alkyl, andu, v and w are each an integer from 0 to 7, with the proviso that the sum u+v+w is .gtoreq.2, andcyclopentadienyl compounds of the formula II ##STR3## and cyclopentadienyl compound of the formula III ##STR4## as intermediates.
    Type: Grant
    Filed: October 28, 1994
    Date of Patent: September 10, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Langhauser, J urgen Kerth, G unther Schweier, Hans-Herbert Brintzinger, Stefan Mansel
  • Patent number: 5491205
    Abstract: Polymers of C.sub.2 -C.sub.10 -alk-1-enes are prepared at from 0.5 to 3000 bar and from -50.degree. to 300.degree. C. using a catalyst system by a process in which the catalyst system used is one which contains, as active components:a) a metallocene complex of the general formula I ##STR1## where M is titanium, zirconium, hafnium, vanadium, niobium or tantalum,X is fluorine, chlorine, bromine, iodine, hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl or --OR.sup.7,R.sup.7 is C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl, alkylaryl, arylalkyl, fluoroalkyl or fluoraryl, where each alkyl radical is of 1 to 10 carbon atoms and each aryl radical is of 6 to 20 carbon atoms,R.sup.1 to R.sup.6 are each hydrogen, C.sub.1 -C.sub.10 -alkyl, 5-membered to 7-membered cycloalkyl, which in turn may carry C.sub.1 -C.sub.10 -alkyl radicals as substituents, C.sub.6 -C.sub.15 -aryl or arylalkyl, where two adjacent radicals together may furthermore be a cyclic group of 4 to 15, carbon atoms, or Si(R.sup.8).sub.3R.
    Type: Grant
    Filed: October 28, 1994
    Date of Patent: February 13, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Langhauser, Jurgen Kerth, Gunther Schweier, Hans-Herbert Brintzinger, Stefan Mansel, Werner Roell, Robin Kirsten