Patents by Inventor Werner Zeiss

Werner Zeiss 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).

  • Publication number: 20070149781
    Abstract: The present invention is directed at a process for preparing enantiomerically enriched compounds of the general formula (I). Compounds of the type shown are employed in catalyst systems.
    Type: Application
    Filed: October 29, 2004
    Publication date: June 28, 2007
    Applicant: Degussa AG
    Inventors: Thomas Riermeier, Axel Monsees, Juan Almena Perea, Renat Kadyrov, Battsengel Gotov, Werner Zeiss, Iris Nagl, Armin Borner, Jens Holz, Karlheinz Drauz, Wilfried Meichelbock
  • Patent number: 7214812
    Abstract: The invention relates to a stabilized peroxydicarbonate preparation and its use in the polymerization or copolymerization of ethylenically unsaturated compounds.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: May 8, 2007
    Assignee: Peroxid-Chemie GmbH & Co. KG
    Inventors: Eberhard Hägel, Martin Kunz, Werner Zeiss
  • Publication number: 20050075514
    Abstract: Many inorganic substrates can be oxidized with a peroxo compound, such as hydrogen peroxide. In processes which are already known, pure alkylrhenium oxides of the formula RaRebOcLd are employed. Catalyst compositions such as are obtainable from the reaction of an oxorhenium compound of the formula ReOmAn with an organylating agent, in particular a Grignard compound, without the preparation process comprising an expensive sublimation, crystallization or distillation, can be employed with the same activity in the oxidation reactions. In addition to oxidation processes, catalyst compositions are disclosed.
    Type: Application
    Filed: September 10, 2004
    Publication date: April 7, 2005
    Inventors: Thomas Riermeier, Manfred Hoff, Werner Zeiss, Uwe Wahren, Karlheinz Drauz
  • Publication number: 20040162438
    Abstract: The invention relates to a stabilized peroxydicarbonate preparation and its use in the polymerization or copolymerization of ethylenically unsaturated compounds.
    Type: Application
    Filed: December 19, 2003
    Publication date: August 19, 2004
    Inventors: Eberhard Hagel, Martin Kunz, Werner Zeiss
  • Patent number: 6395924
    Abstract: The new compound t-butylperoxycyclododecyl oxalate is described, as well as a method of preparing it and use of the compound as a polymerization initiator.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: May 28, 2002
    Assignee: Peroxid-Chemie GmbH & Co KG
    Inventors: Eberhard Hägel, Werner Zeiss, Maximilian Dorn
  • Patent number: 6316562
    Abstract: This invention relates to new metallocenes with mixed substituents and enhanced activity, methods of producing metallocene compounds, and the use of metallocenamide halides for generating an active catalyst system for (co)polymerization reactions.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: November 13, 2001
    Assignee: Peroxid-Chemie GmbH & Co. KG
    Inventors: Florian Munck, Werner Zeiss, Christoph Hartmann, Alexander Vogel, Andreas Detig
  • Patent number: 5856586
    Abstract: Disclosed is a process for the preparation of 2,5-dimethyl-2,5-dihydroperoxyhexene by reaction of 2,5-dimethyl-1,5-hexadiene with hydrogen peroxide in an acidic medium. According to this process, the 2,5-dimethyl-2,5-dihydroperoxyhexane can be prepared with good yield and in a technically simple way.
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: January 5, 1999
    Assignee: Peroxid-Chemie GmbH
    Inventors: Eberhard Hagel, Werner Zeiss
  • Patent number: 5462692
    Abstract: Stable, solid acetyl peroxyborate compounds which are active oxygen-containing compounds derived from acetic acid and boron-oxygen compounds. The compounds of the invention have a peracetic acid content which can be liberated instantly and directly in water with only minor formation of hydrogen peroxide The acetyl peroxyborates of the invention are useful in washing, bleaching and cleaning agent and disinfectant applications and as oxidizing agents in organic synthesis.
    Type: Grant
    Filed: December 2, 1991
    Date of Patent: October 31, 1995
    Assignee: Peroxid-Chemie GmbH
    Inventors: Richard Roesler, Siegfried Schelle, Michael Gnann, Werner Zeiss
  • Patent number: 5399328
    Abstract: A process is described for preparing peroxyborate agglomerates having an active oxygen content of at least 14% by weight in which amorphous primary particles composed of peroxyborate prepared by a spray drying process are subjected to compacting pressing-agglomeration. Briquettes, compressed strips and tablets can be obtained which can be comminuted, if desired, to peroxyborate granules of desired particle size and bulk density. Advantageous, optionally colored, peroxyborate agglomerates, particularly peroxyborate granules are prepared. Preferred agglomerates and granules are composed of sodium peroxyborates.
    Type: Grant
    Filed: February 6, 1991
    Date of Patent: March 21, 1995
    Assignee: Peroxid-Chemie GmbH
    Inventors: Werner Doetsch, Richard Roesler, Werner Zeiss, Rudolf Siegel
  • Patent number: 5290476
    Abstract: A process for preparing microcrystalline perborate hydrate products and highly concentrated, storage stable aqueous solutions used for this purpose which have a stable active oxygen content and a boron content of 3 to 8% by wt. based on the total weight of the solution. The products of the invention are suitable for numerous uses in the field of bleaching agent, disinfectant and liquid detergent formulations, and other fields of use.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: March 1, 1994
    Assignee: Peroxid-Chemie GmbH
    Inventors: Richard Roesler, Werner Doetsch, Werner Zeiss, Rudolf Siegel
  • Patent number: 5032688
    Abstract: A process for the preparation of aralkyl hydroperoxides having the formula (I) is described ##STR1## in which n=1, 2 or 3, Ar means a phenyl group which can be substituted with halogen or one or more branched or straight chain alkyl groups with 1 to 5 C-atoms, or a naphthyl group, and each radical R.sup.1 and R.sup.2 means a low alkyl radical, the alkyl radicals R.sup.1 and R.sup.2 together having 2 to 4 carbon atoms, by reaction of aralkyl carbinols having the formula (II) ##STR2## in which Ar, R.sup.1, R.sup.2 and n have the meaning given for formula (I), with hydrogen peroxide under acid conditions, the reaction being carried out in the presence of an acid-combining agent. An alkali sulphate, ammonium sulphate, alkali hydrogen sulphate and/or ammonium hydrogen sulphate is used in preference as the acid-combining agent. Tert.aralkyl hydroperoxides can be prepared in high yield with a high purity in a simple and safe manner with this process.
    Type: Grant
    Filed: November 7, 1989
    Date of Patent: July 16, 1991
    Assignee: Peroxid-Chemie GmbH
    Inventors: Maximilian Dorn, Eberhard Hagel, Werner Zeiss