Patents by Inventor Hans-Friedrich Herrmann

Hans-Friedrich Herrmann 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: 6114556
    Abstract: Metallocene compound and its use as catalyst component The present invention relates to a multinuclear metallocene compound of the formula I, ##STR1## where M.sup.1 is a tetravalent metal, L.sup.1 are, independently of one another, identical or different and are each a substituted cyclopentadienyl group, L.sup.2 and L.sup.3 are, independently of one another, identical or different and are each a .pi. ligand, B are, independently of one another, identical or different and are each a divalent bridging unit, X are, independently of one another, identical or different and are each a hydrogen atom, a halogen atom, a C.sub.1 -C.sub.10 -fluorocarbon radical or a hydrocarbon-containing radical having 1-40 carbon atoms, and k is an integer from 0 to 10. The metallocene compound of the present invention is suitable as a catalyst component for preparing olefin polymers.
    Type: Grant
    Filed: July 15, 1999
    Date of Patent: September 5, 2000
    Assignee: Targor GmbH
    Inventors: Michael Aulbach, Cornelia Fritze, Hans-Friedrich Herrmann, Frank Kuber, Walter Spaleck, Roland Zenk
  • Patent number: 6107530
    Abstract: The present invention relates to the use of polyolefin waxes synthesized by means of metallocene catalysts for the preparation of solvent-containing pastes. The pastes prepared in this way have a significantly higher paste hardness and an improved heat stability.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: August 22, 2000
    Assignee: Clariant GmbH
    Inventors: Gerd Hohner, Hans-Friedrich Herrmann
  • Patent number: 6080902
    Abstract: The present invention relates to a method of using polyolefin waxes prepared by means of metallocene catalysts as additive components in printing inks and surface coatings.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: June 27, 2000
    Assignee: Clariant GmbH
    Inventors: Hans-Friedrich Herrmann, Gerd Hohner
  • Patent number: 5962359
    Abstract: The present invention relates to a multinuclear metallocene compound of the formula I, ##STR1## where M.sup.1 is a tetravalent metal, L.sup.1 are, independently of one another, identical or different and are each a substituted cyclopentadienyl group, L.sup.2 and L.sup.3 are, independently of one another, identical or different and are each a .pi. ligand, B are, independently of one another, identical or different and are each a divalent bridging unit, X are, independently of one another, identical or different and are each a hydrogen atom, a halogen atom, a C.sub.1 -C.sub.10 -fluorocarbon radical or a hydrocarbon-containing radical having 1-40 carbon atoms, and k is an integer from 0 to 10. The metallocene compound of the present invention is suitable as a catalyst component for preparing olefin polymers.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: October 5, 1999
    Assignee: Targor GmbH
    Inventors: Michael Aulbach, Cornelia Fritze, Hans-Friedrich Herrmann, Frank Kuber, Walter Spaleck, Roland Zenk
  • Patent number: 5942586
    Abstract: Catalyst for the polymerization of olefins, process for its preparation, and its use.The present invention relates to a supported catalyst for the polymerization of olefins, which can be prepared by reacting the reaction product formed from an aluminoxane and at least one metallocene with a microporous, polymeric support.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 24, 1999
    Assignee: Targor GmbH
    Inventors: Hans-Friedrich Herrmann, Bernd Bachmann, Bernhard Hierholzer, Walter Spaleck
  • Patent number: 5917100
    Abstract: A catalyst formed by the reaction of a magnesium alkoxide dispersion having a particle size of from 100 to 3000 nm with a compound of a metal selected from the group comprising titanium, zirconium, vanadium and chromium and then with a chlorine-containing organoaluminum compound possesses a very good hydrogen responsiveness and a high activity even in the presence of molecular-weight regulators such as hydrogen. The catalyst is therefore outstandingly suitable for the production of low molecular-weight polyolefins. The catalyst makes possible the production of waxes having a reduced residual ash content. The large particle diameter and the low fines content of the polymer powder produced by suspension polymerization with this catalyst enables easy removal of the suspension medium and drying. The catalyst is furthermore advantageously used in solution polymerization and, because of the large particle diameter, in gas phase polymerization for producing low molecular-weight poly-1-olefins.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: June 29, 1999
    Assignee: Clariant GmbH
    Inventors: Ludwig Bohm, Hans-Friedrich Herrmann, Joachim Berthold, Gerd Hohner, Rainer Lecht, Hans Joachim Vetter
  • Patent number: 5914376
    Abstract: Catalyst for the polymerization of olefins, process for the preparation thereof, and the use thereof.The present invention relates to a heterogeneous catalyst for the polymerization of olefins, comprising the product of the reaction of an aluminoxane which is insoluble in aliphatic and aromatic hydrocarbons, with at least one metallocene.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 22, 1999
    Assignee: Targor GmbH
    Inventors: Hans-Friedrich Herrmann, Bernd Bachmann, Volker Dolle, Walter Spaleck
  • Patent number: 5880302
    Abstract: The invention relates to an organometalic compound of the formula I ##STR1## where M is a metal atom, L are, independently of one another, identical or different .pi. ligands or other electron donors, T is a tin-containing bridge, Y are identical or different and are each a C.sub.1 -C.sub.20 -hydrocarbon group, an amide group, an alkoxy group or a halogen atom and K=0 or 1.The organometallic compound is suitable as catalyst component for olefin polymerization.
    Type: Grant
    Filed: October 1, 1997
    Date of Patent: March 9, 1999
    Assignee: Targor GmbH
    Inventors: Hans-Friedrich Herrmann, Frank Kuber, Wolfgang Anton Herrmann, Markus Morawietz
  • Patent number: 5807936
    Abstract: The present invention relates to a transition metal compound of the formula IL.sub.n (X.sub.m A.sub.t R.sup.1.sub.q).sub.s MY.sub.r (I),whereM is a metal atom of group IIIb, IVb, Vb or VIb of the Periodic Table of the Elements,L are identical or different and are each a .pi.-ligand or an electron donor, n is 1, 2, 3 or 4,Y are identical or different and are each a hydrogen atom, a halogen atom or an 1-dentate C.sub.1 -C.sub.40 -group, where l is 1, 2, 3 or 4, r is 0, 1, 2, 3, 4 or 5,and at least one of the radicals L bears at least one group X.sub.m A.sub.t R.sup.1.sub.q, whereX are identical or different and are each a hetero atom or a C.sub.1 -C.sub.40 -group, m is 0 or 1,A is an atom of group IIIa, Va or VIa of the Periodic Table of the Elements, t is 1,R.sup.1 are identical or different and are each a C.sub.1 -C.sub.40 -group, q is 1, 2, 3, 4 or 5 and s is an integer from 1 to 20.The transition metal compound of the invention is suitable as a catalyst component for olefin polymerization.
    Type: Grant
    Filed: June 12, 1996
    Date of Patent: September 15, 1998
    Assignee: Targor GmbH
    Inventors: Cornelia Fritze, Hans-Friedrich Herrmann, Gerhard Erker, Johannes Ruwwe
  • Patent number: 5808122
    Abstract: The invention relates to an organometallic compound of the formula I ##STR1## where M is chromium, molybdenum or tungsten, L is a cyclopentadienyl ligand, T is a bridge, A is a cyclopentadienyl ligand or an electron donor and R.sup.1 are, independently of one another, identical or different C.sub.1 -C.sub.20 -hydrocarbon radicals or hydrogen. The organometallic compound is suitable as a catalyst component for olefin polymerization.
    Type: Grant
    Filed: May 8, 1996
    Date of Patent: September 15, 1998
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hans-Friedrich Herrmann, Frank Kuber, Wolfgang Anton Herrmann, Markus Morawietz
  • Patent number: 5767300
    Abstract: The present invention relates to a metallocene compound of the formula I which is suitable for olefin polymerization ##STR1## where M is a metal of group IVb, Vb or VIb of the Periodic Table.X are each a hydrogen atom, a halogen atom or a C.sub.1 -C.sub.40 -radical OR.sup.4 or NR.sup.4.sub.2, where R.sup.4 are a C.sub.1 -C.sub.20 hydrocarbon radicalm and p are 1, 2 or 3,n is 1 or 2,L each a .pi. ligand which coordinates to the central atom M,M.sup.2 are each a silicon atom, a germanium atom or a tin atom,R.sup.1 are a C.sub.1 -C.sub.20 -radical,R.sup.2 are a C.sub.1 -C.sub.20 -radical or a .pi. ligand which coordinates to the central atom M,A are each a bidentate C.sub.1 -C.sub.40 -hydrocarbon group,Z are each a boron atom, a silicon atom, a germanium atom or a tin atom,R.sup.3 are each a hydrogen atom or a C.sub.1 -C.sub.20 -radical,o is zero, 1 or 2,Hal are each a halogen atom, andwhere n is 1 if R.sup.2 is a .pi. ligand which coordinates to the central atom M and n is 2 if R.sup.2 is a C.sub.1 -C.sub.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: June 16, 1998
    Assignee: Targor GmbH
    Inventors: Michael Aulbach, Hans-Friedrich Herrmann, Dieter Bilda, Carsten Bingel
  • Patent number: 5750813
    Abstract: A process for the preparation of a polyolefin wax by polymerization or copolymerization of olefins or diolefins in suspension and in the presence of a catalyst. The process utilizes a metallocene and a cocatalyst, wherein the metallocene is a compound of the formula I ##STR1## in which M.sup.1 is a metal of group IVb, Vb or VIb of the Periodic Table of Elements, R.sup.1 and R.sup.2 are identical or different and are a hydrogen atom, a C.sub.1 -C.sub.10 -alkyl group, a C.sub.1 -C.sub.10 -alkoxy group, a C.sub.6 -C.sub.10 -aryl group, a C.sub.6 -C.sub.10 -aryloxy group, a C.sub.2 -C.sub.10 -alkenyl group, a C.sub.7 -C.sub.40 -arylalkyl group, a C.sub.7 -C.sub.40 -alkylaryl group, a C.sub.8 -C.sub.40 -arylalkenyl group or a halogen atom and R.sup.3 and R.sup.4 are identical or different and are a mononuclear or polynuclear hydrocarbon radical which may form a sandwich structure with the central atom M.sup.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: May 12, 1998
    Assignee: Clarian & GmbH
    Inventors: Reiner Hess, Hartmut Voigt, Hans-Friedrich Herrmann, Ludwig Bohm, Walter Spaleck, Gerd Hohner
  • Patent number: 5726333
    Abstract: The invention relates to an organometallic compound of the formula I, ##STR1## where M is a tetravalent metal, L are, independently of one another, identical or different and are each a .pi. ligand, T are, independently of one another, identical or different and are each a bridge and A are, independently of one another, identical or different and are each a .pi. ligand or another electron donor.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: March 10, 1998
    Assignee: Hoechst AG
    Inventors: Hans-Friedrich Herrmann, Frank Kuber, Michael Aulbach, Wolfgang Anton Herrmann, Marc Morawietz
  • Patent number: 5723705
    Abstract: A process for the preparation of a polyolefin wax by polymerization or co-polymerization of olefines or diolefins at a temperature of -40.degree. to 100.degree. C. at a pressure of 0.5 to 120 bar, in suspension and in the presence of a metallocene catalyst and a co-catalyst, thereby producing wax products in solid form which may be easily separated from the suspending agent and the catalyst need not be separated off.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 3, 1998
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hans-Friedrich Herrmann, Ludwig Bohm, Hartmut Voigt, Walter Spaleck, Gerd Hohner
  • Patent number: 5670436
    Abstract: The present invention relates to an unbridged metallocene compound which is suitable for olefin polymerization.
    Type: Grant
    Filed: October 6, 1995
    Date of Patent: September 23, 1997
    Assignee: Hoechst AG
    Inventors: Hans-Friedrich Herrmann, Michael Aulbach, Frank Kuber
  • Patent number: 5614455
    Abstract: Olefin polymerization catalyst, process for its preparation, and its useA supported polymerization catalyst which is applicable in all polymerization processes is comprised of the reaction product of (A) a supported organoaluminum compound and (B) a metallocene catalyst component.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 25, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hans-Friedrich Herrmann, Bernd Bachmann, Walter Spaleck
  • Patent number: 5578537
    Abstract: A supported polymerization catalyst which is applicable in all polymerization processes is comprised of the reaction product of (A) a supported organoaluminum compound and (B) a metallocene catalyst component.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: November 26, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hans-Friedrich Herrmann, Bernd Bachmann, Walter Spaleck
  • Patent number: 5565534
    Abstract: The present invention relates to a process for the preparation of a polyolefin by polymerization of at least one olefin in the presence of a stereorigid metallocene compound containing, as ligands, at least two substituted or unsubstituted cyclopentadienyl groups bonded to one another via a monocyclic or polycyclic ring system, in which at least one cyclopentadienyl group is fused to the monocyclic or polycyclic ring system.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: October 15, 1996
    Assignee: Hoechst AG
    Inventors: Michael Aulbach, Bernd Bachmann, Gerhard Erker, Christian Psiorz, Frank Kuber, Frank Osan, Thomas Weller, Hans-Friedrich Herrmann
  • Patent number: 5262498
    Abstract: An immobile (heterogeneous) metallocene catalyst component which can advantageously be used for olefin polymerization is obtained by homopolymerization of appropriately substituted (vinyl group-containing) metallocenes of group IVb of the periodic table or by copolymerization of such metallocenes with (di)vinylaromatic compounds.
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: November 16, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Martin Antberg, Hans-Friedrich Herrmann, Jurgen Rohrmann
  • Patent number: 5169818
    Abstract: An immobile (heterogeneous) metallocene catalyst component which can advantageously be used for olefin polymerization is obtained by homopolymerization of appropriately substituted (vinyl group-containing) metallocenes of group IVb of the periodic table or by copolymerization of such metallocenes with (di)vinyl-aromatic compounds.
    Type: Grant
    Filed: April 21, 1992
    Date of Patent: December 8, 1992
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Martin Antberg, Hans-Friedrich Herrmann, Jurgen Rohrmann