Patents by Inventor Volker Mohring

Volker Mohring 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: 7612159
    Abstract: The invention relates to a process for working up polyethersiloxanes, wherein said polyethersiloxanes are treated with H2O2 and are separated from volatile components by separation methods known per se.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: November 3, 2009
    Assignee: Goldschmidt AG
    Inventors: George Burkhart, Horst Dudzik, Wolfgang Hiersche, Wilfried Knott, Volker Möhring
  • Patent number: 7196153
    Abstract: The invention relates to a process for the preparation of equilibration products of organosiloxanes by rearrangement of the siloxane bond to a cation exchange resin, the organopolysiloxanes thus obtainable and the use thereof.
    Type: Grant
    Filed: January 15, 2004
    Date of Patent: March 27, 2007
    Assignee: Goldschmidt AG
    Inventors: Georg Burkhart, Jurgen Dröse, Horst Dudzik, Klaus-Dieter Klein, Wilfried Knott, Volker Möhring
  • Publication number: 20060241270
    Abstract: The invention relates to a process for the preparation of equilibration products of organosiloxanes by rearrangement of the siloxane bond to a cation exchange resin, the organopolysiloxanes thus obtainable and the use thereof.
    Type: Application
    Filed: July 10, 2006
    Publication date: October 26, 2006
    Applicant: Goldschmidt
    Inventors: Georg Burkhart, Jurgen Drose, Horst Dudzik, Klaus-Dieter Klein, Wilfried Knott, Volker Mohring
  • Publication number: 20040132951
    Abstract: The invention relates to a process for working up polyethersiloxanes, wherein said polyethersiloxanes are treated with H2O2 and are separated from volatile components by separation methods known per se.
    Type: Application
    Filed: December 18, 2003
    Publication date: July 8, 2004
    Inventors: George Burkhart, Horst Dudzik, Wolfgang Hiersche, Wilfried Knott, Volker Mohring
  • Publication number: 20020161158
    Abstract: The invention relates to a process for working up polysiloxane/polyoxyalkylene block copolymers, wherein said copolymers are subjected to a treatment with superheated steam.
    Type: Application
    Filed: February 25, 2002
    Publication date: October 31, 2002
    Inventors: Georg Burkhart, Wilfried Knott, Volker Mohring
  • Patent number: 5183830
    Abstract: A method for the preparation of highly elastic foams of reduced compression hardness and having urethane groups is disclosed, in which the reaction of the polyurethane-forming materials is carried in the presence of 0.01 to 5% by weight, based on the polyol, of a compound, which has at least one polyoxyalkylene group and at least one anionic group in the molecule. The use of fluorocarbons to decrease the compression hardness can reduced appreciably by the use of this compound.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: February 2, 1993
    Assignee: Th. Goldschmidt AG
    Inventors: Volker Mohring, Volker Zellmer
  • Patent number: 5093376
    Abstract: A method is disclosed for the preparation of flexible polyester polyurethane foam by reaction of at least difunctional polyesterols with at least difunctional organic isocyanates in the presence of catalysts and a stabilizer mixture of organic and organosilicon compounds, water, optionally blowing agents and optionally conventional additives, wherein the stabilizer mixture used comprisesa) a (meth)allyl polyoxyalkylene ether polymer or its copolymer with vinyl monomers andb) a polyoxyethylene-polysiloxane block copolymer,in a ratio by weight of a:b of 1:9 to 9:1. The polyester foam obtained are open celled to a high degree and have an excellent die-cuttability.
    Type: Grant
    Filed: July 18, 1990
    Date of Patent: March 3, 1992
    Assignee: Th. Goldschmidt AG
    Inventors: Volker Mohring, Volker Zellmer, Georg Burkhart, Jurgen Fock, Hans-Heinrich Schlons
  • Patent number: 5093539
    Abstract: The invention relates to polymers and oligomers characterized in that they have been prepared from .alpha.-olefin monomers or mixtures thereof and the distances between the methyl branching paints are controllable by the selection of the .alpha.-olefins and to a process for preparing said novel polymers and oligomers.
    Type: Grant
    Filed: November 29, 1988
    Date of Patent: March 3, 1992
    Assignee: Studiengesellschaft Kohle mbH
    Inventors: Gerhard Fink, Volker Mohring
  • Patent number: 5082868
    Abstract: A method for the preparation of rigid polyurethane and/or polyisocyanurate foams is disclosed. The foams are produced by the reaction of at least difunctional polyisocyanates, a polyol with 3 to 8 hydroxyl groups, said polyol having a hydroxyl number of about 150 to 800, catalysts, blowing agents and foam stabilizers, which are devoid of silicon atoms, as well as, optionally, conventional additives such as flame retardants and chain extenders. The foam stabilizers are copolymers of vinyl monomers and allyl- or methallyl polyoxalkylene ethers. The mole ratio of the monomers is 1:1 to 10:1.The foams thus produced exhibit an improved burning behavior, good surface properties and outstanding thermal insulation effects. The stabilizers increase the solubility of the halocarbon blowing agents in the foaming formulation.
    Type: Grant
    Filed: July 21, 1989
    Date of Patent: January 21, 1992
    Assignee: Th. Goldschmidt AG
    Inventors: Georg Burkhart, Jurgen Fock, Volker Mohring
  • Patent number: 4724273
    Abstract: The invention relates to polymers and oligomers characterized in that they have been prepared from .alpha.-olefin monomers or mixtures thereof and the distances between the methyl branching points are controllable by the selection of the .alpha.-olefins and to a process for preparing said novel polymers and oligomers.
    Type: Grant
    Filed: February 7, 1986
    Date of Patent: February 9, 1988
    Assignee: Studiengesellschaft Kohle mbH
    Inventors: Gerhard Fink, Volker Mohring