Patents by Inventor Volker Dolle

Volker Dolle 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: 6197902
    Abstract: Syndio-isoblock polymers of 1-olefins having molecular chains which contain syndiotactic and isotactic sequences are obtained if the polymerization of the 1-olefins is carried out using a catalyst which is composed of a bridged chiral metallocene of the formula I and an aluminoxane. The polymers have some rubber-like properties.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: March 6, 2001
    Assignee: Targor GmbH
    Inventors: Volker Dolle, J├╝rgen Rohrmann, Andreas Winter, Martin Antberg, Robert Klein
  • Patent number: 6191223
    Abstract: a) from 50 to 85% by weight of a copolymer of propylene (A) with 1-alkenes comprising from 20 to 80% by weight of a high molecular weight copolymer of propylene (I) containing from 2.0 to 7.0% by weight of copolymerized 1-alkene and having a viscosity of from 500 to 1200 ml/g and from 20 to 80% by weight of a low molecular weight copolymer of propylene (II) containing from 4.0 to 10.0% by weight of copolymerized 1-alkene and having a viscosity of from 200 to 450 ml/g, b) from 5 to 10% by weight of a polymer of ethylene (B) and c) from 10 to 40% by weight of a rubber-like copolymer of propylene and a 1-alkene (C) containing from 30 to 70% by weight of copolymerized 1-alkene have a melt flow index (MFI) at 230° C. under a weight of 5 kg of from 0.1 to 5 g/10 min, a molecular weight distribution (Mw/Mn) of from 6 to 20 and a total 1-alkene content of from 4 to 15% by weight.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: February 20, 2001
    Assignee: Tagor GmbH
    Inventors: Volker Dolle, Herbert Terwyen
  • Patent number: 6063880
    Abstract: If a catalyst consisting of an aluminoxane and a metallocene of the formula I ##STR1## in particular R.sup.5 R.sup.6 C (Ind).sub.2 or R.sup.5 R.sup.6 C (Ind).sub.2 Zr(CH.sub.3).sub.2, is employed for the polymerization of olefins of the formulaR.sup.9 CH.dbd.CHR.sup.10(R.sup.9, R.sup.10 =H or C.sub.1 -C.sub.28 alkyl), the isotacticity of the polymer wax and hence the hardness and melting point can be varied simply by changing the polymerization temperature, without the molecular weight of the polymer being noticeably changed at the same time.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: May 16, 2000
    Assignee: Targor GmbH
    Inventors: Andreas Winter, Jurgen Rohrmann, Volker Dolle, Martin Antberg, Walter Spaleck
  • Patent number: 6048950
    Abstract: Propylene isoblock polymers with 0.5 to 10 mol %, based on the total polymer, of randomly distributed ethylene content and with a narrow molecular weight distribution and rubber-like properties are obtained when propylene is polymerized using a catalyst comprising an aluminoxane and a chiral metallocene, containing bridges, of formula I: ##STR1## in which M.sup.1 is preferably hafnium or zirconium,R.sup.1 and R.sup.2 are preferably halogen (e.g. C1) atoms,R.sub.3 through R.sup.6 are hydrogen or C.sub.1 -C.sub.10 -alkyl, and pair of adjacent radicals R.sup.3, R.sup.4, R.sup.5, and R.sup.6 can form an aromatic ring with the C-atoms to which they are bonded, andR.sup.7 is preferably --Si(CH.sub.3).sub.2 --Si(CH.sub.3).sub.2 --.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: April 11, 2000
    Assignee: Targor GmbH
    Inventors: Volker Dolle, Jurgen Rohrmann, Andreas Winter, Martin Antberg
  • Patent number: 6028152
    Abstract: Disclosed is a catalyst system and method of polymerizing olefins, wherein the catalyst comprises a bridged metallocene of the following structure: ##STR1## wherein M.sup.1 is a transition metal of groups 4-6, R.sup.1 -R.sup.9 is hydrogen or other groups with the proviso that substituents R.sup.3 and R.sup.6 are not hydrogen, and wherein the metallocene is present in the meso form or in a mixture including both the meso and racemic forms.
    Type: Grant
    Filed: August 18, 1997
    Date of Patent: February 22, 2000
    Assignee: Targor GmbH
    Inventors: Andreas Winter, Martin Antberg, Bernd Bachmann, Volker Dolle, Frank Kuber, Jurgen Rohrmann, Walter Spaleck
  • Patent number: 5985784
    Abstract: A highly effective catalyst system for the polymerization or copolymerization of olefins comprises at least one metallocene as transition-metal compound and at least one aluminum compound of the formula II ##STR1## and/or of the formula (III) ##STR2## where, in the formulae (II) and (III), the radicals R.sup.14 may be identical or different and are an alkyl group, an aryl group, benzyl or hydrogen, and p is an integer from 2 to 50, and at least one aluminum compound of the formula IV ##STR3## where R.sup.15, R.sup.16 and R.sup.17 are identical or different and are a hydrogen atom, an alkyl group, an alkylsilyl group, an alkoxy group, an aryl group, an aryloxy group, an alkenyl group, an arylalkyl group, an alkylaryl group, an arylalkenyl group, a halogen atom or a radical of the formula --OSiR.sup.15 R.sup.16 R.sup.17 where R.sup.15, R.sup.16 and R.sup.17 are as defined in the description.
    Type: Grant
    Filed: February 4, 1998
    Date of Patent: November 16, 1999
    Assignee: Targor GmbH
    Inventors: Andreas Winter, Volker Dolle, Walter Spaleck
  • Patent number: 5962595
    Abstract: The invention relates to a high-molecular-weight reactor blend comprising a high-molecular weight polypropylene and a high-molecular weight ethylene-propylene copolymer and having an ethylene content in the range from 0.1 to 2% by weight based on the total amount of blend, a melt flow index MFR (230/5) of .ltoreq.5 dg/min and a molecular weight distribution M.sub.w /M.sub.n in the range from 6 to 20.
    Type: Grant
    Filed: May 22, 1997
    Date of Patent: October 5, 1999
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Volker Dolle, Thomas Bohm
  • Patent number: 5962719
    Abstract: A process for the preparation of a polyolefin wax If a catalyst consisting of an aluminoxane and a metal-locene of the formula I ##STR1## in particular R.sup.5 R.sup.6 C (Ind).sub.2 or R.sup.5 R.sup.6 C (Ind).sub.2 Zr(CH.sub.3).sub.2, is employed for the polymerization of olefins of the formulaR.sup.9 CH.dbd.CHR.sup.10(R.sup.9, R.sup.10 =H or C.sub.1 -C.sub.28 alkyl), the isotacticity of the polymer wax and hence the hardness and melting point can be varied simply by changing the polymerization temperature, without the molecular weight of the polymer being noticeably changed at the same time.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: October 5, 1999
    Assignee: Targor GmbH
    Inventors: Andreas Winter, Jurgen Rohrmann, Volker Dolle, Martin Antberg, Walter Spaleck
  • Patent number: 5932669
    Abstract: A very effective catalyst system for olefin polymerization comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I ##STR1## in which, preferably, M.sup.1 is Zr or Hf, R.sup.1 and R.sup.2 are halogen or alkyl, R.sup.3 is alkyl, R.sup.4 to R.sup.10 are alkyl or hydrogen and R.sup.11 is a (substituted) alkylene or heteroatom bridge.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: August 3, 1999
    Assignee: Targor GmbH
    Inventors: Jurgen Rohrmann, Volker Dolle, Andreas Winter, Frank Kuber
  • 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: 5869584
    Abstract: A highly effective catalyst system for the polymerization of olefins comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I ##STR1## in which, preferably M.sup.1 is Zr or Hf, R.sup.1 and R.sup.2 are alkyl or halogen, R.sup.5 is hydrogen or alkyl, R.sup.3 and R.sup.4 are alkyl, where R.sup.3, R.sup.4 and R.sup.5 may be halogenated, --(CR.sup.7 R.sup.8).sub.m --R.sup.6 --(CR.sup.7 R.sup.8).sub.n -- is a single- or multi-membered chain in which R.sup.6 may also be a (substituted) heteroatom, and m+n is zero or 1.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: February 9, 1999
    Assignee: Targor GmbH
    Inventors: Andreas Winter, Frank Kueber, Walter Spaleck, Herbert Riepl, Wolfgang Anton Herrmann, Volker Dolle, Juergen Rohrmann
  • Patent number: 5830821
    Abstract: Metallocenes having benzo-fused indenyl derivatives as ligands, processes for their preparation and their use as catalystsA very effective catalyst system for olefin polymerization comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I ##STR1## in which, preferably, M.sup.1 is Zr or Hf, R.sup.1 and R.sup.2 are halogen or alkyl, R.sup.3 is alkyl, R.sup.4 to R.sup.10 are alkyl or hydrogen and R.sup.11 is a (substituted) alkylene or heteroatom bridge.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: November 3, 1998
    Assignee: Targor GmbH
    Inventors: Jurgen Rohrmann, Volker Dolle, Andreas Winter, Frank Kuber
  • Patent number: 5731254
    Abstract: A syndiotactic polyolefin is obtained in a high yield by polymerization or copolymerization of an olefin of the formula R.sup.a --CH.dbd.CH--R.sup.b in the presence of a catalyst consisting of a metallocene of the formula I ##STR1## in which M.sup.1 is titanium, zirconium, vanadium, niobium or tantalum, and an aluminoxane. This polyolefin has a very high molecular weight, a very narrow molecular weight distribution and a very high syndiotactic index. Shaped articles produced from the polymer are distinguished by a high transparency, flexibility, tear resistance and an excellent surface gloss.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: March 24, 1998
    Assignee: Hoechst
    Inventors: Andreas Winter, Jurgen Rohrmann, Martin Antberg, Volker Dolle, Walter Spaleck
  • Patent number: 5714427
    Abstract: A catalyst system comprising an aluminoxane and a transition-metal component (metallocene) is used, the transition-metal component comprising at least one zirconocene of the formula I ##STR1## and at least one zirconocene of the formula Ia or alternatively at least 2 zirconocenes of the formula I.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: February 3, 1998
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Andreas Winter, Volker Dolle, Walter Spaleck
  • Patent number: 5708090
    Abstract: Process for the preparation of a polypropylene molding compositionA propylene block copolymer having good flow properties and a very good low temperature impact strength is obtained in a high yield if a catalyst which consists of a chiral metallocene, containing a bridge, of the formula I ##STR1## and an aluminoxane is used for the polymerization of propylene and the comonomers.The polymerization is carried out in two stages, a crystalline propylene polymer being prepared in the first stage.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: January 13, 1998
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Michael Schreck, Andreas Winter, Volker Dolle, Hartmut Kondoch, Martin Antberg, Jurgen Rohrmann
  • Patent number: 5700896
    Abstract: Propylene isoblock polymers with 0.5 to 10 mol %, based on the total polymer, of randomly distributed ethylene content and with a narrow molecular weight distribution and rubber-like properties are obtained when propylene is polymerized using a catalyst comprising an aluminoxane and a chiral metallocene, containing bridges, of formula I: ##STR1## in which M.sup.1 is preferably hafnium or zirconium,R.sup.1 and R.sup.2 are preferably halogen (e.g. C1) atoms,R.sub.3 through R.sup.6 are hydrogen or C.sub.1 -C.sub.10 alkyl, and pair of adjacent radicals R.sup.3, R.sup.4, R.sup.5, and R.sup.6 can form an aromatic ring with the C-atoms to which they are bonded, andR.sup.7 is preferably --Si(CH.sub.3).sub.2 --Si(CH.sub.3).sub.2 --.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 23, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Volker Dolle, Jurgen Rohrmann, Andreas Winter, Martin Antberg
  • Patent number: 5693836
    Abstract: A process for the preparation of an olefin polymer by polymerization or copolymerization of an olefin of the formula R.sup.a --CH.dbd.CH--R.sup.b, in which R.sup.a and R.sup.b are identical or different and are a hydrogen atom or a hydrocarbon radical having 1 to 14 carbon atoms, or R.sup.a and R.sup.b, together with the atoms connecting them, can form a ring, at a temperature of from -60.degree. to 200.degree. C., at a pressure of from 0.5 to 100 bar, in solution, in suspension or in the gas phase, in the presence of a catalyst formed from a metallocene in the meso-form or a meso:rac mixture, with meso:rac>1:99, as transition-metal compound and a cocatalyst, wherein the metallocene is a compound of the formula I, ##STR1## in which M.sup.1 is Zr or Hf, R.sup.1 and R.sup.2 are identical or different and are methyl or chlorine, R.sup.3 and R.sup.6 are identical or different and are methyl, isopropyl, phenyl, ethyl or trifluoromethyl, R.sup.4 and R.sup.5 are hydrogen or as defined for R.sup.3 and R.sup.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 2, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Andreas Winter, Martin Antberg, Bernd Bachmann, Volker Dolle, Frank Kuber, Jurgen Rohrmann, Walter Spaleck
  • Patent number: 5679812
    Abstract: A very efficient catalyst system for the polymerization of 1-olefins consists of an aluminoxane and a metallocene which is a compound of the formula I ##STR1## in which R.sup.1 and R.sup.2 denote hydrogen atoms, halogen atoms or hydrocarbon radicals and R.sup.3 and R.sup.4 are mononuclear or polynuclear hydrocarbon radicals which can form a sandwich structure with the central atom and which are linked to one another by a --R.sup.6.sub.m --R.sup.5 --R.sup.7.sub.n -- bridge containing a hetero atom and consisting of one or several members.The catalyst system produces polymers having a high molecular weight and excellent grain morphology.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 21, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Andreas Winter, Volker Dolle, Jurgen Rohrmann, Walter Spaleck
  • Patent number: 5679811
    Abstract: A very efficient catalyst system for the polymerization of 1-olefins consists of an aluminoxane and a metallocene which is a compound of the formula I ##STR1## in which R.sup.1 and R.sup.2 denote hydrogen atoms, halogen atoms or hydrocarbon radicals and R.sup.3 and R.sup.4 are mononuclear or polynuclear hydrocarbon radicals which can form a sandwich structure with the central atom and which are linked to one another by a --R.sup.6.sub.m --R.sup.5 --R.sup.7.sub.n -- bridge containing a hetero atom and consisting of one or several members.The catalyst system produces polymers having a high molecular weight.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: October 21, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Andreas Winter, Volker Dolle, Martin Antberg, Jurgen Rohrmann, Walter Spaleck
  • Patent number: RE36103
    Abstract: A syndiotactic polyolefin is obtained in a high yield by polymerization or copolymerization of an olefin of the formula R.sup.a --CH.dbd.CH--R.sup.b in the presence of a catalyst consisting of a metallocene of the formula I ##STR1## and an aluminoxane. This polyolefin has a very high syndiotactic index. At a low polymerization temperature, a polyolefin having a low average molecular weight and narrow molecular weight distribution is obtained, and at a high polymerization temperature a polymer having a high average molecular weight and a wide molecular weight distribution is obtained.Shaped articles produced from the polymers are distinguished by a high transparency, flexibility, tear strength and excellent surface gloss.
    Type: Grant
    Filed: July 21, 1994
    Date of Patent: February 16, 1999
    Assignee: Targor GmbH
    Inventors: Andreas Winter, Jurgen Rohrmann, Martin Antberg, Volker Dolle, Walter Spaleck