Patents by Inventor Harald Kaspar

Harald Kaspar 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: 20110040021
    Abstract: A method comprising melt-processing a first composition. The first composition comprises a first fluoropolymer having a relaxation exponent of from 0.93 to 1.0 and a second fluoropolymer having a relaxation exponent of from 0.30 to 0.92. A method comprising melt-processing a first composition, wherein the first composition comprises a first fluoropolymer having an LCBI of from 0 to 0.1 and a second fluoropolymer having an LCBI of at least 0.2. A method comprising melt-processing a first composition, wherein the first composition comprises a core-shell polymer having a first fluoropolymer portion and a second fluoropolymer portion. The extrusion products have a lower width homogeneity index value than observed in state of the art fluo-ropolymers.
    Type: Application
    Filed: July 2, 2008
    Publication date: February 17, 2011
    Inventors: Harald Kaspar, Klaus Hintzer, Mark W. Muggil, Stefan V. Friedrich
  • Publication number: 20110034604
    Abstract: The invention provides a fluorinated surfactant having the general formula: [Rf—(O)t—CHF—(CF2)n—COO—]iXi+??(I) wherein Rf represents a partially or fully fluorinated aliphatic group optionally interrupted with one or more oxygen atoms, t is 0 or 1 and n is 0 or 1, Xi+ represents a cation having a valence i and i is 1, 2 or 3. The surfactant can be used in emulsion polymerization of fluoromonomers to prepare fluoropolymers.
    Type: Application
    Filed: October 19, 2010
    Publication date: February 10, 2011
    Inventors: Klaus Hintzer, Michael Jürgens, Harald Kaspar, Herbert Königsmann, Andreas R. Maurer, Werner Schwertfeger, Tilman C. Zipplies
  • Publication number: 20100311906
    Abstract: A polymer composition comprising at least one non-fluorinated melt-processable polymer and as a processing aid at least one fluorinated melt-processable polymer, wherein the fluorinated melt-processable polymer is obtainable by polymerizing one or more fluorinated monoolefin monomers in the presence of one or more fluorinated bisolefinic ethers.
    Type: Application
    Filed: January 21, 2009
    Publication date: December 9, 2010
    Inventors: Claude Lavallee, Harald Kaspar, Klaus Hintzer
  • Publication number: 20100305262
    Abstract: There is provided a fluoroelastomer characterized by containing one type or more types of fluorinated emulsifiers represented by the formula: F—(CF2)t-[O(CF2)n]m-O—(CHF)o-(CF2)p-X where m=0 to 3; n=1 to 5; o=0 to 1; p=1 to 3; t=1 to 10; and where when t=2 than o?0; and further where X is selected from a group consisting of a carboxyl acid group and a salt of a carboxylic acid group. A method for preparing fluoroelastomers by using such fluorinated emulsifiers in emulsion polymerization of fluoromonomers and articles containing such fluoroelastomers are also provided. A fluorinated elastomer dispersion including an aqueous mixture of a crosslinkable fluorinated elastomer and such fluorinated emulsifiers are also provided. The fluoroelastomers created with such fluorinated emulsifiers are essentially free of cations other than NH4+ and H+ and have a low glass transition temperature.
    Type: Application
    Filed: October 10, 2008
    Publication date: December 2, 2010
    Inventors: Klaus Hintzer, Kai H. Lochhaas, Michael Jürgens, Harald Kaspar, Tilman C. Zipplies, André Streiter
  • Patent number: 7838608
    Abstract: The invention provides a fluorinated surfactant having the general formula: [Rf—(O)t—CHF—(CF2)n—COO—]iXi+??(I) wherein Rf represents a partially or fully fluorinated aliphatic group optionally interrupted with one or more oxygen atoms, t is 0 or 1 and n is 0 or 1, Xi+ represents a cation having a valence i and i is 1, 2 or 3. The surfactant can be used in emulsion polymerization of fluoromonomers to prepare fluoropolymers.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: November 23, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Klaus Hintzer, Michael Jürgens, Harald Kaspar, Herbert Königsmann, Andreas R Maurer, Werner Schwertfeger, Tilman C. Zipplies
  • Publication number: 20100256412
    Abstract: Provided are fluorinated polyethers and polyether oils and methods of preparation. The preparation involves a catalytic oxidation process of fluorinated vinyl ethers employing free oxygen.
    Type: Application
    Filed: August 26, 2008
    Publication date: October 7, 2010
    Inventors: Werner Schwertfeger, Klaus Hintzer, Harald Kaspar, Egon Obermaier
  • Patent number: 7795332
    Abstract: A method for removing a fluorinated carboxylic acid or salt thereof from an aqueous liquid by contacting the aqueous liquid with adsorbent particles. The fluorinated carboxylic acid or salt thereof is selected from the group consisting of partially fluorinated carboxylic acids or salts thereof and fully fluorinated carboxylic acids or salts thereof.
    Type: Grant
    Filed: May 25, 2006
    Date of Patent: September 14, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Klaus Hintzer, Michael Jürgens, Harald Kaspar, Herbert Koenigsmann, Kai Helmut Löchhaas, Andreas R. Maurer, Werner Schwertfeger, Tilman Zipplies, George G. I. Moore, Jay F. Schulz, Richard M. Flynn
  • Publication number: 20100227992
    Abstract: A process for producing fluoropolymers by polymerizing at least one fluorinated monomer in a polymerization medium comprising water and selected low-telogenic hydrofluoroethers (HFEs).
    Type: Application
    Filed: July 31, 2007
    Publication date: September 9, 2010
    Inventors: Klaus Hintzer, Harald Kaspar, Werner Schwertfeger, Robert Heinfeldner
  • Patent number: 7776946
    Abstract: The present invention provides an aqueous emulsion polymerization of fluorinated monomers including gaseous fluorinated monomers using a perfluoro ether surfactant as an emulsifier. The perfluoro ether surfactants correspond to formula (I) Rf—O—CF2CF2—X??(I) wherein Rf represents a linear or branched perfluoroalkyl group having 1, 2, 3 or 4 carbon atoms and X represents a carboxylic acid group or salt thereof. In a further aspect, the invention also provides an aqueous fluoropolymer dispersion comprising the perfluoro ether surfactant and the use of such dispersion in the coating or impregnation of substrates.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: August 17, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Klaus Hintzer, Harald Kaspar, Andreas R. Maurer, Werner Schwertfeger, Tilman Zipplies
  • Publication number: 20100179262
    Abstract: A composition including at least one first divalent unit represented by formula: Each Rf is independently selected from the group consisting of Rfa—(O)t—CHF—(CF2)n—; [Rfa—(O)t—C(L)H—CF2—O]m—W—; Rfb-O—(CF2)p-; F(CkF2k)—(O—CkF2k)P—O—CF2—; and CF3—O—(CF2)3—(OCF(CF3)—CF2)Z—O-L1-. Each Q is independently selected from the group consisting of a bond, —C(O)—N(R1)—, and —C(O)—O—. Each X is independently selected from the group consisting of alkylene and arylalkylene, wherein alkylene and arylalkylene are each optionally interrupted by at least one ether linkage and optionally terminated by —N(R1)—C(O)— or —O—C(O)—. R and R1 are each independently selected from the group consisting of hydrogen and alkyl having from 1 to 4 carbon atoms. Rfa represents a partially or fully fluorinated alkyl group having from 1 to 10 carbon atoms and optionally interrupted with at least one oxygen atom. Rfb is selected from the group consisting of CF3CFH— and F(CjF2j)-.
    Type: Application
    Filed: June 6, 2008
    Publication date: July 15, 2010
    Inventors: Rudolf J. Dams, Miguel A. Guerra, Klaus Hintzer, Michael Jürgens, Harald Kaspar, Kai H. Lochhaas, Andreas R. Maurer, Zai-Ming Qiu, Worner Schwertfeger, Michael S. Terrazas, Tilman C. Zipplies
  • Publication number: 20100179293
    Abstract: A process of removing fluorinated compounds from an aqueous phase originating from the preparation of fluoropolymers said process comprising the use of polycationic polymers.
    Type: Application
    Filed: May 8, 2008
    Publication date: July 15, 2010
    Inventors: Klaus Hintzer, Michael Jürgens, Andreas R. Maurer, Werner Schwertfeger, Tilman C. Zipplies, Kai H. Lochhaas, Harald Kaspar
  • 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
  • Patent number: 7728087
    Abstract: A method for polymerizing, in an aqueous medium, at least one fluorinated monomer in the presence of a non-copolymerizable, non-fluorinated surfactant. The surfactant is generally selected from a non-ionic surfactant, a primary anionic surfactant, or a combination thereof. Fluorinated surfactants are not utilized. The resulting partially fluorinated polymer in the aqueous medium is either a semi-crystalline polymer or a crystalline polymer.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: June 1, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Klaus Hintzer, Harald Kaspar, Helmut Traunspurger, Tilman Zipplies
  • Publication number: 20100121012
    Abstract: The present disclosure describes fluoropolymers having long chain branches and methods of making these fluoropolymers. These fluoropolymers may have improved melt processing properties. Shaped articles containing these fluoropolymers are also provided.
    Type: Application
    Filed: April 24, 2008
    Publication date: May 13, 2010
    Inventors: Klaus Hintzer, Harald Kaspar
  • 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: 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
  • Patent number: 7659333
    Abstract: The present invention provides a fluorinated surfactant having the general formula: [Rf—(O)t—CQH—CF2—O]n—R—G??(I) wherein Rf represents a partially or fully fluorinated aliphatic group optionally interrupted with one or more oxygen atoms, Q is CF3 or F, R is an aliphatic or aromatic hydrocarbon group, G represents a carboxylic or sulphonic acid or salt thereof, t is 0 or 1 and n is 1, 2 or 3. The surfactant is particularly useful in polymerizing fluorinated monomers in an aqueous emulsion polymerization.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: February 9, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Klaus Hintzer, Michael Jürgens, Harald Kaspar, Herbert Königsmann, Kai Helmut Lochhaas, Andreas R. Maurer, Tilman C. Zipplies, Richard M. Flynn
  • Publication number: 20100022702
    Abstract: A fluorinated polymer composition, an article made with the fluorinated polymer composition and a method of making the fluorinated polymer are provided. The method comprises a partially fluorinated polymer which has carboxylic or carboxylate end groups and forming a potassium salt with the end groups of the fluorinated polymer through ion exchange. The resulting partially fluorinated polymers demonstrate high thermal stability without the addition of thermal stabilizers.
    Type: Application
    Filed: December 10, 2007
    Publication date: January 28, 2010
    Inventors: Lisa P. Chen, Harald Kaspar, Tilman C. Zipplies, Barbara Ann Yoder, Jeffrey G. Linert
  • Patent number: 7560517
    Abstract: The present invention relates to a fluoropolymer comprising repeating units derived from one or more gaseous fluorinated olefins and having one or more cure sites comprising (a) a halogen capable of participating in a peroxide cure reaction or (b) a nitrile group, said fluoropolymer further comprising repeating units derived from one or more fluorinated allyl ethers of the formula: CF2?CF—CF(Z)—O—Rf??(I) wherein Z represents F or CF3 and Rf represents a fluorinated alkyl group that may contain one or more catenary oxygen atoms. The fluoropolymer can be cured to a fluoroelastomer. The invention also relates to a curable fluoroelastomer composition comprising the fluoropolymer and a curing agent.
    Type: Grant
    Filed: November 16, 2005
    Date of Patent: July 14, 2009
    Assignee: 3M Innovative Properties Company
    Inventors: Klaus Hintzer, Michael Jurgens, Harald Kaspar, Kai Helmut Lochhaas, Werner Schwertfeger
  • Patent number: 7375157
    Abstract: A polymer melt additive that is suitable for use as a processing aid in the extrusion of a non-fluorinated polymer. The polymer melt additive composition includes a fluoropolymer that has a long chain branching index (LCBI) of at least 0.2 and a zero shear rate viscosity at 265° C. of not more than 107 Pa's. The polymer melt additive may additionally include other compounds such as, polyoxyalkylene polymer or polycaprolactone.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: May 20, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Stephen E. Amos, Klaus Hintzer, Harald Kaspar, Claude Lavallée