Patents by Inventor Michael C. Dadalas

Michael C. Dadalas 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).

  • Publication number: 20160122572
    Abstract: Provided are processes for upconcentrating fluoropolymer dispersions. Also provided are upconcentrated dispersions and substrates coated with such dispersions.
    Type: Application
    Filed: May 16, 2014
    Publication date: May 5, 2016
    Inventors: Tilman C. Zipples, Arne Thaler, Egon Obermaier, Klaus Hintzer, Michael C. Dadalas
  • Patent number: 9212693
    Abstract: Provided is an article comprising a bearing, wherein the bearing has disposed upon it a fluoropolymer composition. The fluoropolymer composition comprises a fluoropolymer and a pH-dependent surfactant.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: December 15, 2015
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Michael C. Dadalas, Klaus Hintzer, Ludwig Mayer, Tilman C. Zipplies, James A. McDonell
  • Patent number: 9139668
    Abstract: There are provided compositions comprising (i) at least one non-aromatic polyol compound containing at least one polyol unit having at least two hydroxyl groups and at least one long chain unit containing at least 6 carbon atoms; and (ii) at least one fluoropolymer comprising repeating units derived from a fluorinated olefin. There are also provided methods of improving the shear stability of fluoropolymer dispersions, methods of coating substrates, and substrates coated with the above described composition.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: September 22, 2015
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Tilman C. Zipplies, Klaus Hintzer, Michael C. Dadalas, Oliver Frey, Kai H Lochhaas
  • Publication number: 20130344341
    Abstract: Provided is an article comprising a bearing, wherein the bearing has disposed upon it a fluoropolymer composition. The fluoropolymer composition comprises a fluoropolymer and a pH-dependent surfactant.
    Type: Application
    Filed: June 14, 2013
    Publication date: December 26, 2013
    Inventors: Michael C. Dadalas, Klaus Hintzer, Ludwig Mayer, Tilman C. Zipplies, James A. McDonell
  • Patent number: 8614265
    Abstract: A method of making a fluoropolymer dispersion by first providing a fluoropolymer dispersion comprising fluoropolymer particles and one or more fluorinated surfactants selected from fluorinated carboxylic acids or salts thereof having the general formula: [Rf—O-L-COO?]iXi+??(I) wherein L represents a linear fully fluorinated alkylene group, Rf represents a linear fully fluorinated aliphatic group or a linear fully fluorinated aliphatic group interrupted with one oxygen atom, Xi+ represents a cation having the valence i and i is 1, 2 or 3; then adding one or more non-fluorinated surfactants selected from anionic and non-ionic surfactants followed by reducing the total amount of the one or more fluorinated surfactants to an amount of not more than 500 ppm, for example not more than 250 ppm based on the total weight of the dispersion while maintaining or increasing the amount of solids in the dispersion.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: December 24, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Klaus Hintzer, Michael Jürgens, Harald Kaspar, Herbert Koenigsmann, Kai Helmut Lochhaas, Andreas R. Maurer, Werner Schwertfeger, Tilman Zipplies, Ludwig Mayer, Michael C. Dadalas, George G. I. Moore, Jay F. Schulz, Richard M. Flynn
  • Patent number: 8598267
    Abstract: The present invention provides a fluoropolymer dispersion comprising fluoropolymer particles having an average particle size of 10 to 400 nm dispersed in water whereby the dispersion is free of fluorinated surfactant having a molecular weight of less than 1000 g/mol or contains the fluorinated surfactant having a molecular weight of less than 1000 g/mol in an amount of not more than 0.025% by weight based on the total weight of solids in the dispersion. The dispersion further comprises a non-ionic surfactant and an anionic surfactant selected from fluorinated anionic surfactants having a molecular weight of at least 1000 g/mol, non-fluorinated anionic surfactants and mixtures thereof.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: December 3, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Michael C. Dadalas, Rebekka Epsch, Friedrich Kloos, Leonard W. Harvey
  • Patent number: 8466231
    Abstract: A process of reducing the amount of fluorinated emulsifiers in fluoropolymer dispersions by contacting the fluoropolymer dispersion with an anion exchange resin in the presence of a pH-dependent surfactant, and fluoropolymer dispersion containing the pH-dependent surfactant and uses thereof.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: June 18, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Michael C. Dadalas, Klaus Hintzer, Ludwig Mayer, Tilman C. Zipplies, James Arthur McDonell
  • Publication number: 20120252949
    Abstract: A method of making a fluoropolymer dispersion by first providing a fluoropolymer dispersion comprising fluoropolymer particles and one or more fluorinated surfactants selected from fluorinated carboxylic acids or salts thereof having the general formula: [Rf—O-L-COO?]iXi+??(I) wherein L represents a linear fully fluorinated alkylene group, Rf represents a linear fully fluorinated aliphatic group or a linear fully fluorinated aliphatic group interrupted with one oxygen atom, Xi+ represents a cation having the valence i and i is 1, 2 or 3; then adding one or more non-fluorinated surfactants selected from anionic and non-ionic surfactants followed by reducing the total amount of the one or more fluorinated surfactants to an amount of not more than 500 ppm, for example not more than 250 ppm based on the total weight of the dispersion while maintaining or increasing the amount of solids in the dispersion.
    Type: Application
    Filed: June 12, 2012
    Publication date: October 4, 2012
    Inventors: Klaus Hintzer, Michael JÜRGENS, Harald Kaspar, Herbert Koenigsmann, Kai Helmut Lochhaas, Andreas R. Maurer, Werner Schwertfeger, Tilman Zipplies, Ludwig Mayer, Michael C. Dadalas, George G.I. Moore, Jay F. Schulz, Richard M. Flynn
  • Patent number: 8222322
    Abstract: A method of making a fluoropolymer dispersion by first providing a fluoropolymer dispersion comprising fluoropolymer particles and one or more fluorinated surfactants selected from fluorinated carboxylic acids or salts thereof having the general formula: [Rf—O-L-COO?]iXi+??(I) wherein L represents a linear fully fluorinated alkylene group, Rf represents a linear partially or fully fluorinated aliphatic group or a linear partially or fully fluorinated aliphatic group interrupted with one oxygen atom, Xi+ represents a cation having the valence i and i is 1, 2 or 3; then adding one or more non-fluorinated surfactants selected from anionic and non-ionic surfactants followed by reducing the total amount of the one or more fluorinated surfactants to an amount of not more than 500 ppm, for example not more than 250 ppm based on the total weight of the dispersion while maintaining or increasing the amount of solids in the dispersion.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: July 17, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Klaus Hintzer, Michael Jürgens, Harald Kaspar, Herbert Koenigsmann, Kai Helmut Lochhaas, Andreas R. Maurer, Werner Schwertfeger, Tilman Zipplies, Ludwig Mayer, Michael C Dadalas, George G. I. Moore, Jay F. Schulz, Richard M. Flynn
  • Publication number: 20120129982
    Abstract: There are provided compositions comprising (i) at least one non-aromatic polyol compound containing at least one polyol unit having at least two hydroxyl groups and at least one long chain unit containing at least 6 carbon atoms; and (ii) at least one fluoropolymer comprising repeating units derived from a fluorinated olefin. There are also provided methods of improving the shear stability of fluoropolymer dispersions, methods of coating substrates, and substrates coated with the above described composition.
    Type: Application
    Filed: July 30, 2010
    Publication date: May 24, 2012
    Inventors: Tilman C. Zipplies, Klaus Hintzer, Michael C. Dadalas, Oliver Frey, Kai H. Lochhaas
  • Patent number: 7754795
    Abstract: A coating composition having (i) an aqueous dispersion of fluoropolymer particles comprising a non-melt processible polymer of tetrafluoroethylene, (ii) a fluorinated surfactant, (iii) a non-ionic non-fluorinated surfactant and (iv) a non-fluorinated polymer, wherein the fluorinated surfactant is selected from fluorinated carboxylic acids or salts thereof of the general formula (I): [Rf—O-L-COO?]iXi+??(I) wherein L represents a linear partially or fully fluorinated alkylene group or an aliphatic hydrocarbon group, Rf represents a linear partially or fully fluorinated aliphatic group or a linear partially or fully fluorinated aliphatic group interrupted with one or more oxygen atoms, Xi+ represents a cation having the valence i and i is 1, 2 or 3.
    Type: Grant
    Filed: May 25, 2006
    Date of Patent: July 13, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Klaus Hintzer, Michael Jürgens, Harald Kaspar, Herbert Koenigsmann, Kai Helmut Lochhaas, Andreas R. Maurer, Werner Schwertfeger, Tilman Zipplies, Ludwig Mayer, Michael C. Dadalas, George G. I. Moore, Jay F. Schulz, Richard M. Flynn
  • Publication number: 20100113679
    Abstract: A method of making a fluoropolymer dispersion by first providing a fluoropolymer dispersion comprising fluoropolymer particles and one or more fluorinated surfactants selected from fluorinated carboxylic acids or salts thereof having the general formula: [Rf—O-L-COO?]iXi+??(I) wherein L represents a linear fully fluorinated alkylene group, Rf represents a linear partially or fully fluorinated aliphatic group or a linear partially or fully fluorinated aliphatic group interrupted with one oxygen atom, Xi+ represents a cation having the valence i and i is 1, 2 or 3; then adding one or more non-fluorinated surfactants selected from anionic and non-ionic surfactants followed by reducing the total amount of the one or more fluorinated surfactants to an amount of not more than 500 ppm, for example not more than 250 ppm based on the total weight of the dispersion while maintaining or increasing the amount of solids in the dispersion.
    Type: Application
    Filed: January 8, 2010
    Publication date: May 6, 2010
    Inventors: Klaus Hintzer, Michael Jürgens, Harald Kaspar, Herbert Koenigsmann, Kai Helmut Lochhaas, Andreas R. Maurer, Werner Schwertfeger, Tilman Zipplies, Ludwig Mayer, Michael C. Dadalas, George G.I. Moore, Jay F. Schulz, Richard M. Flynn
  • Patent number: 7678859
    Abstract: Provided is a method comprising polymerizing at least one fluorinated monomer in an aqueous emulsion polymerization in the presence of a carbosilane surfactant having at least one hydrophobic part, wherein the hydrophobic part has at least one silicon atom, and having at least one hydrophilic part, with the proviso that the carbosilane contains no Si—O bonds.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: March 16, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Peter Bissinger, Michael C. Dadalas, Klaus Hintzer, Ludwig Mayer, Werner Schwertfeger, Tilman C. Zipplies
  • Patent number: 7671112
    Abstract: A method of making a fluoropolymer dispersion by first providing a fluoropolymer dispersion comprising fluoropolymer particles and one or more fluorinated surfactants selected from fluorinated carboxylic acids or salts thereof having the general formula: [Rf—O-L-COO?]iXi+??(I) wherein L represents a linear partially or fully fluorinated alkylene group or an aliphatic hydrocarbon group, Rf represents a linear partially or fully fluorinated aliphatic group or a linear partially or fully fluorinated aliphatic group interrupted with one or more oxygen atoms, Xi+ represents a cation having the valence i and i is 1, 2 or 3; then adding one or more non-fluorinated surfactants selected from anionic and non-ionic surfactants followed by reducing the total amount of the one or more fluorinated surfactants to an amount of not more than 500 ppm, for example not more than 250 ppm based on the total weight of the dispersion while maintaining or increasing the amount of solids in the dispersion.
    Type: Grant
    Filed: May 25, 2006
    Date of Patent: March 2, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Klaus Hintzer, Michael Jürgens, Harald Kaspar, Herbert Koenigsmann, Kai Helmut Lochhaas, Andreas R. Maurer, Werner Schwertfeger, Tilman Zipplies, Ludwig Mayer, Michael C. Dadalas, George G. I. Moore, Jay F. Schulz, Richard M. Flynn
  • Publication number: 20100047585
    Abstract: The present invention provides a process for reducing the amount of fluorinated emulsifier in fluoropolymer dispersions by contacting the fluoropolymer dispersion with an anion exchange resin in the presence of amphoteric surfactants or anionic surfactants of low molecular weight and provides fluoropolymer dispersions containing low amounts of fluorinated emulsifier and no or only low amounts of non-ionic surfactants.
    Type: Application
    Filed: December 12, 2007
    Publication date: February 25, 2010
    Inventors: Klaus Hintzer, Michael C. Dadalas, Andreas R. Maurer, Tilman C. Zipplies
  • Publication number: 20090192260
    Abstract: A process of reducing the amount of fluorinated emulsifiers in fluoropolymer dispersions by contacting the fluoropolymer dispersion with an anion exchange resin in the presence of a pH-dependent surfactant, and fluoropolymer dispersions containing the pH-dependent surfactant and uses thereof.
    Type: Application
    Filed: April 8, 2009
    Publication date: July 30, 2009
    Inventors: Michael C. Dadalas, Klaus Hintzer, Ludwig Mayer, Tilman C. Zipplies, James Arthur McDonell
  • Patent number: 7462667
    Abstract: The present invention provides an aqueous coating composition comprising (i) particles of a non-melt processible polymer of tetrafluoroethylene and (ii) a non-fluorinated polymer selected from the group consisting of a polysulfone, a polyamide, a polyimide, a polyamide-imide, a polybismaleimide and mixtures thereof, wherein said particles are core-shell particles whereby the shell comprises a copolymer of tetrafluoroethylene and a partially fluorinated or non-fluorinated comonomer. The aqueous coating composition may be used for providing a primer coating on a substrate such as a metal or glass substrate. Such primer coating may provide good or excellent non-stick coatings combined with good or excellent scratch and wear resistance of the coating. Also, such primer coating may provide for good to excellent PTFE coatings that can resist hot salt water. The aqueous coating composition may also be used to provide other coating layers of a multi-layer coating.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: December 9, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Michael C. Dadalas, Klaus Hintzer, Gernot Loehr, Tilman Zipplies
  • Publication number: 20080287599
    Abstract: The present invention provides a fluoropolymer dispersion comprising fluoropolymer particles having an average particle size of 10 to 400 nm dispersed in water whereby the dispersion is free of fluorinated surfactant having a molecular weight of less than 1000 g/mol or contains the fluorinated surfactant having a molecular weight of less than 1000 g/mol in an amount of not more than 0.025% by weight based on the total weight of solids in the dispersion. The dispersion further comprises a non-ionic surfactant and an anionic surfactant selected from fluorinated anionic surfactants having a molecular weight of at least 1000 g/mol, non-fluorinated anionic surfactants and mixtures thereof.
    Type: Application
    Filed: September 7, 2007
    Publication date: November 20, 2008
    Inventors: Michael C. Dadalas, Rebekka Epsch, Friedrich Kloos, Leonard W. Harvey
  • Publication number: 20080264864
    Abstract: A process of reducing the amount of fluorinated emulsifiers in fluoropolymer dispersions by contacting the fluoropolymer dispersion with an anion exchange resin in the presence of a pH-dependent surfactant, and fluoropolymer dispersions containing the pH-dependent surfactant and uses thereof.
    Type: Application
    Filed: April 27, 2007
    Publication date: October 30, 2008
    Inventors: Michael C. Dadalas, Klaus Hintzer, Ludwig Mayer, Tilman C. Zipplies, James Arthur McDonell
  • Publication number: 20080097060
    Abstract: Provided is a method comprising polymerizing at least one fluorinated monomer in an aqueous emulsion polymerization in the presence of a carbosilane surfactant having at least one hydrophobic part, wherein the hydrophobic part has at least one silicon atom, and having at least one hydrophilic part, with the proviso that the carbosilane contains no Si—O bonds.
    Type: Application
    Filed: September 14, 2006
    Publication date: April 24, 2008
    Inventors: Peter Bissinger, Michael C. Dadalas, Klaus Hintzer, Ludwig Mayer, Werner Schwertfeger, Tilman C. Zipplies