Patents by Inventor Thomas Jaworek

Thomas Jaworek 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).

  • Apparatus having a metallic surface protected from undesired deposition of polymer
    Patent number: 6461440
    Abstract: An article having a metallic surface treated with polymeric complexing agent is described. Particularly suitable polymeric complexing agents are phosphonoalkylated polyethyleneimines and/or carboxyalkylated polyethyleneimines and/or vinylimidazole polymers. As a rule, the treated metallic surface forms the total inner surface or a part of the inner surface of a process apparatus or of a container. The surface is protected by the treatment, in particular from the adhesion of polymer.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: October 8, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinz Friedrich Sutoris, Gerhard Wagenblast, Jürgen Schröder, Harald Keller, Rainer Rahm, Jürgen Decker, Thomas Jaworek, Volker Schliephake
  • Preparation of (meth)acrylates
    Patent number: 6458991
    Abstract: Compounds having alcoholic hydroxyl groups are esterified with acrylic or methacrylic acid in the presence of copper(II) salts or mixtures thereof as polymerization inhibitors and in the presence of a hydrocarbon as a water-entraining agent with removal of the water of reaction at from 90 to 150° C. After the esterification, the copper salt is precipitated as copper sulfide and is separated off from the ester. The light-color (meth)acrylates resulting in the high yields are particularly suitable for coatings containing colored pigment on substrates such as wood, paper, mineral building materials, plastics or metal.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: October 1, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Paulus, Wolfgang Reich, Erich Beck, Thomas Jaworek, Rainer Königer
  • Inhibitor composition for stabilizing substances capable of free radical polymerization
    Patent number: 6458956
    Abstract: An inhibitor mixture containing, as components, a) at least one nitroxyl radical (derivative), b) at least one phenol (derivative) and c) at least one chemical compound which contains at least one phosphorus atom which has the oxidation state +3 is preferably used for stabilizing compounds capable of free radical polymerization.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: October 1, 2002
    Assignee: BAF Aktiengesellschaft
    Inventors: Heinz Friedrich Sutoris, Gerhard Wagenblast, Volker Schliephake, Jürgen Schröder, Harald Keller, Thomas Jaworek
  • Weathering-stable, radiation-curable polyurethanes
    Patent number: 6444721
    Abstract: A water-dispersible, radiation-curable polyurethane composed essentially of a) organic, aliphatic or alicyclic polyisocyanates, b) cycloaliphatic diols and/or cycloaliphatic diamines, c) compounds containing at least one isocyanate-reactive group and at least one free-radically polymerizable unsaturated group, d) compounds containing at least one isocyanate-reactive group and at least one dispersing-active group, e) if desired, compounds containing at least two isocyanate-reactive groups having a molecular weight <1000 g/mol, f) if desired, compounds other than a) to d) containing at least one isocyanate-reactive group.
    Type: Grant
    Filed: January 3, 2001
    Date of Patent: September 3, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Reinhold Schwalm, Frank Völlinger, Klaus Menzel, Wolfgang Reich, Erich Beck, Thomas Jaworek
  • Weathering-stable, radiation-curable polyurethanes
    Publication number: 20010029272
    Abstract: A water-dispersible, radiation-curable polyurethane composed essentially of
    Type: Application
    Filed: January 3, 2001
    Publication date: October 11, 2001
    Applicant: BASF Akiengesellschaft
    Inventors: Reinhold Schwalm, Frank Vollinger, Klaus Menzel, Wolfgang Reich, Erich Beck, Thomas Jaworek