Patents by Inventor Rainer Wefringhaus

Rainer Wefringhaus 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: 9790348
    Abstract: There is provide a curable composition comprising a) one or more reactive components that cure upon exposure to suitable conditions, and b) a sulfur impregnated particulate solid which acts as a release agent for sulfur during the cure process; and c) optionally a solvent.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: October 17, 2017
    Assignees: Henkel AG & Co. KGaA, Henkel IP & Holding GmbH
    Inventors: Wolfgang Weimar, Rainer Wefringhaus, Eimear Fleming, Darren Nolan, Markus Robler, Deirdre Ledwith
  • Patent number: 9644121
    Abstract: The present invention relates to adhesives that are suitable for use in a broad variety of bonding applications. In particular, the present invention relates to adhesives that are suitable for use in polymer-to-metal, for example elastomer-to-metal, such as rubber-to-metal bonding applications, wherein the adhesives comprise at least one halogenated polyolefin, at least one epoxysilane having at least one terminal alkoxy silane group, at least one bis-silane, and optionally at lease one organic solvent.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: May 9, 2017
    Assignees: Henkel AG & Co. KGaA, Henkel IP & Holding GmbH
    Inventors: Darren Nolan, Nigel Fay, Eimear Fleming, Brendan Kneafsey, Rainer Wefringhaus, Wolfgang Weimar
  • Publication number: 20150183966
    Abstract: There is provide a curable composition comprising a) one or more reactive components that cure upon exposure to suitable conditions, and b) a sulfur impregnated particulate solid which acts as a release agent for sulfur during the cure process; and c) optionally a solvent
    Type: Application
    Filed: March 13, 2015
    Publication date: July 2, 2015
    Inventors: Wolfgang Weimar, Rainer Wefringhaus, Eimear Fleming, Darren Nolan, Markus Robler, Deirdre Ledwith
  • Patent number: 6902760
    Abstract: Aqueous bonding agents based on at least one phenolic resin, at least one aromatic dinitroso compound and a polyvinyl alcohol are suitable as a one-coat aqueous rubber-metal bonding agent to achieve permanent rubber-metal bonds. These bonding agents can be substantially free from organic solvents and halogen compounds, and allow one-coat application without an additional, previous application of a primer.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: June 7, 2005
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rainer Wefringhaus, Hans-Joachim Purps
  • Patent number: 6682779
    Abstract: Disclosed are aqueous polyurethane compositions which contain at least one aqueous polyurethane dispersion, at least one compound blocked with isocyanate groups, at least one means for improving sliding behaviour, at least one surface-active and flow-control agent as well as optionally conventional bonding agents, dyes and/or pigments. Said aqueous polyurethane dispersions are useful for coating elastomers for obtaining a surface that has a very low coefficient of friction. Elastomer components that are coated according to the invention are useful for sealing window channels, for moveable glass components and/or as profiled joints in vehicle manufacturing, preferably in automobile manufacturing.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: January 27, 2004
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rainer Wefringhaus, Richard Hemel
  • Publication number: 20040010093
    Abstract: Two-component polyurethane binding agents based on a polyester polyol with an aliphatic or cycloaliphatic polyisocyanate and a curing-agent component based on polyamine mixtures are suitable as UV-resistant flocking adhesives for the flocking of polymeric substrates. These adhesives can be processed in accordance with all standard processing techniques and result in flocked articles with high UV resistance and good abrasion resistance.
    Type: Application
    Filed: May 9, 2003
    Publication date: January 15, 2004
    Inventors: Rainer Wefringhaus, Richard Hemel
  • Publication number: 20030232917
    Abstract: Aqueous bonding agents based on at least one phenolic resin, at least one aromatic dinitroso compound and a polyvinyl alcohol are suitable as a one-coat aqueous rubber-metal bonding agent to achieve permanent rubber-metal bonds. These bonding agents can be substantially free from organic solvents and halogen compounds, and allow one-coat application without an additional, previous application of a primer.
    Type: Application
    Filed: June 13, 2003
    Publication date: December 18, 2003
    Inventors: Rainer Wefringhaus, Hans-Joachim Purps
  • Patent number: 6253505
    Abstract: The invention relates to one- or two-component polyurethane lacquers for coating elastomers containing polyurethane prepolymers with an average of two or more isocyanate groups per molecule which have been prepared by mixing alcohols having a functionality of two or higher with an excess of isocyanate compounds having a functionality of two or higher and solvents, characterized in that a compound containing iron oxide is added in an extremely large quantity to improve surface slip, and to the production and use of such one- or two-component polyurethane lacquers.
    Type: Grant
    Filed: December 2, 1997
    Date of Patent: July 3, 2001
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rainer Wefringhaus, Richard Hemel
  • Patent number: 5976402
    Abstract: Compositions containing p-dinitrosobenzene deposited onto a support of a chemically inert material which is solid at room temperature are provided. The composition is preferably formed by depositing p-dinitrosobenzene from a solution or by sublimation or in the course of its synthesis in the presence of one or more supports. Hydrophilic or hydrophobic silica, hydrophobicized zeolites, carbon blacks and layer silicates are examples of supports. The composition is useful in the production of adhesives, more particularly for bonding elastomers, e.g. in the polymerization or crosslinking of elastomers, and even more particularly in the bonding of rubber to metal.
    Type: Grant
    Filed: October 3, 1995
    Date of Patent: November 2, 1999
    Assignee: Henkel Kommanditgesellschaft auf Aktien (KGaA)
    Inventors: Burkhard Muller, Brigitte Calaminus, Wolf-Dieter Beiersdorf, Werner Gruber, Hans-Josef Hoffmann, Rainer Wefringhaus, Peter Kuhm, Norbert Hubner, Christian Block