Patents by Inventor Lothar Ruetz

Lothar Ruetz 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).

  • Easily transportable and meterable mixtures of aromatic oils and phenylenediamines having high stability in storage
    Patent number: 5929294
    Abstract: This invention relates to easily conveyable and easily meterable mixtures having high stability in storage, containing aromatic mineral oils and phenylenediamines, the content of phenylenediamines in the mixture being 1 to 99 wt. %. The mixtures of mineral oils and phenylenediamines according to the invention are used in the production of rubbers and rubber articles.
    Type: Grant
    Filed: September 16, 1997
    Date of Patent: July 27, 1999
    Assignee: Bayer AG
    Inventors: Christian Laue, Reinhard Preuss, Lothar Ruetz
  • Process for increasing the ozone-resistance of a rubber with enol ethers
    Patent number: 4481321
    Abstract: Enol ethers corresponding to the following general formula ##STR1## are suitable as non-discoloring ozone protective agents for rubber.
    Type: Grant
    Filed: July 22, 1983
    Date of Patent: November 6, 1984
    Assignee: Bayer Aktiengesellschaft
    Inventors: Dieter W. Bruck, Werner Jeblick, Lothar Ruetz
  • Cyclic acetals of diols, their production of their use as non-discoloring antiozonants
    Patent number: 4472549
    Abstract: Condensation products of a diol with aldehydes corresponding to the following formula: ##STR1## in which R represents hydrogen or methyl, the methyl group being in the 3- and/or 4-position, and Y represents the number 0 or 1, a process for its production characterized in that diols are reacted with aldehyde compounds in known manner, and its use as an antiozonant for rubber.
    Type: Grant
    Filed: August 13, 1982
    Date of Patent: September 18, 1984
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ernst Roos, Werner Jeblick, Lothar Ruetz
  • Process for increasing the ozone-resistance of a rubber
    Patent number: 4469830
    Abstract: The ozone-resistance of natural and synthetic rubber is increased when an enol ether of the formula ##STR1## is incorporated.
    Type: Grant
    Filed: July 22, 1983
    Date of Patent: September 4, 1984
    Assignee: Bayer Aktiengesellschaft
    Inventors: Dieter W. Bruck, Werner Jeblick, Lothar Ruetz
  • Dihydrobenzothiazine compounds and the preparation thereof
    Patent number: 4420613
    Abstract: The present invention relates to new dihydrobenzothiazine compounds, to the production thereof and to the use thereof as stabilizers and co-stabilizers against the oxidative and/or thermal degradation of organic polymers.
    Type: Grant
    Filed: March 17, 1982
    Date of Patent: December 13, 1983
    Assignee: Bayer Aktiengesellschaft
    Inventors: Paul Uhrhan, Edmund Krauthausen, Kurt-Rainer Stahlke, Gerwolf Quaas, Lothar Ruetz
  • Apparatus for coating fibers, threads and sheets
    Patent number: 4141315
    Abstract: This invention relates to an apparatus for applying a thin layer of liquid systems to fibers, threads or sheets which are moved uniformly in a linear direction which comprises continuously foaming the liquid system and bringing the threads, fibers or sheets into contact with the foamed system by a one-way process.
    Type: Grant
    Filed: October 12, 1977
    Date of Patent: February 27, 1979
    Assignee: Bayer Aktiengesellschaft
    Inventors: Heinrich Nassenstein, Richard Menold, Fritz Feld, Konrad Ellegast, Roland Weisbeck, Hans G. Gelhaar, Lothar Ruetz, Friedrich W. Elsasser