Patents by Inventor Jan Holoch

Jan Holoch 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).

  • Continuous production process of expandable styrene polymer beads
    Patent number: 5905096
    Abstract: A continuous process for preparing bead-form expandable styrene polymers in which the styrene is prepolymerized in bulk to a conversion of 10 to 80%, the prepolymer is dispersed in liquid form in an aqueous phase in the presence of suspension stabilizers, and the polymerization of the prepolymer is completed in an aqueous suspension to a residual styrene content of less than 2000 ppm.
    Type: Grant
    Filed: January 29, 1998
    Date of Patent: May 18, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Nikolaus Lay, Swen Ruck, Michael Schiessl, Michael Witt, Hans Dieter Zettler, Michael Baumgartel, Gerhard Dembek, Klaus Hahn, Jan Holoch, Wolfram Husemann, Knut Kaempfer
  • Preparation of pigmented curable polyester molding compounds
    Patent number: 5094797
    Abstract: Pigmented curable polyester molding compounds which cure to give homogeneously colored moldings contain an unsaturated polyester, copolymerizable monomers, a thermoplastic polymer and a color pigment and are prepared by dispersing the pigment in the molten thermoplastic in an extruder.
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: March 10, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Heel, Jan Holoch, Gerd Esswein, Friedrich Goffing
  • Thickened molding compositions
    Patent number: 5047455
    Abstract: A thickened, uncrosslinked molding composition which has a long shelf life and can be cured above 50.degree. C. comprises a liquid reactive system, a thickener, a polymerization initiator and conventional additives. The thickener is a combination of a primary aromatic amine and an isocyanate. The molding compositions, which are, in particular, SMCs or BMCs, can be processed into moldings by compression molding, injection molding or transfer molding and subsequent curing.
    Type: Grant
    Filed: September 15, 1988
    Date of Patent: September 10, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Anton Hesse, Jan Holoch, Roland Peter
  • Novel polyphenol and thermosetting plastics prepared therefrom
    Patent number: 4987264
    Abstract: Novel phenol compounds of the general formula ##STR1## where X is a sulfone group or contains a sulfone group, are suitable for the preparation of epoxy resins, vinyl ester resins, bismaleimide resins and cyanate resins.
    Type: Grant
    Filed: April 21, 1989
    Date of Patent: January 22, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Jan Holoch, Roland Peter, Philipp Eisenbarth, Thomas Allspach
  • Molding materials based on curable unsaturated polyester resins and having a long shelf life
    Patent number: 4829106
    Abstract: Molding materials having a long shelf life consist of an unsaturated polyester resin, monomers, conventional additives and an inhibitor combination comprising a phenol or quinone, a phosphine or an ester of phosphorous acid, and a metal cation in the form of a salt or a complex which is soluble in the polyester resin.
    Type: Grant
    Filed: September 16, 1987
    Date of Patent: May 9, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Jan Holoch, Alfred Guthmann, Hans-Juergen Christoph, Heinz B. Kemper
  • Flexible bismaleimides
    Patent number: 4745197
    Abstract: Bismaleimides having the general formula ##STR1## in which n is a whole number between 5 and 70 and --X-- is --O-- or --NH-- are prepared through the reaction of the corresponding amino-terminated polyoxybutylenes with 2 moles of maleic anhydride. They are suited as toughening agents in high grade reactive resins.
    Type: Grant
    Filed: June 30, 1987
    Date of Patent: May 17, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Philipp Eisenbarth, Anton Hesse, Jan Holoch, Roland Peter