Patents by Inventor Rainer Hoefer

Rainer Hoefer 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).

  • Patent number: 6825242
    Abstract: Radically post-crosslinked polymers are made by a process comprising the steps of: (1) forming a polyurethane (at) by reacting a compound (a) with an aliphatic and/or an aromatic isocyanate and a compound (c) wherein compound (a) is the product of the reaction of an epoxidized fatty acid ester and/or an epoxidized triglyceride with acrylic acid and/or methacrylic acid and wherein compound (c) is a diallyl phthalate; (2) forming a crosslinked polyurethane by reacting the polyurethane (a*) with a radical initiator (b). The polymers are useful as components in composites comprised of natural and/or synthetic fibers.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: November 30, 2004
    Assignee: Cognis Deutschland GmbH & Co. KG
    Inventors: Horst Sulzbach, Ralf Bemmann, Rainer Hoefer, Michael Skwiercz
  • Publication number: 20040170833
    Abstract: Methods of coating glass with coating compositions comprising an epoxy resin reaction product of epichlorohydrin and a component selected from the group consisting of bisphenol A and bisphenol F in an amount of from 1 to 98% by weight, a water-dilutable epoxy resin hardener in an amount of from 1 to 98% by weight and water in an amount of from 1 to 98% by weight, are described along with methods of reinforcing synthetic fibers and composite materials including such coated glass.
    Type: Application
    Filed: December 3, 2003
    Publication date: September 2, 2004
    Inventors: Rainer Hoefer, Ulrich Nagorny, Thorsten Roloff
  • Publication number: 20040170834
    Abstract: Methods of coating glass with coating compositions comprising a water-dispersible epoxy resin which is solid at 20° C., in an amount of from 1 to 98% by weight, with the proviso that the epoxy resin does not comprise a reaction product of epichlorohydrin and a component selected from the group consisting of bisphenol A and bisphenol F; a water-dilutable epoxy resin hardener in an amount of from 1 to 98% by weight; and water in an amount of from 1 to 98% by weight, are described along with methods of reinforcing synthetic fibers and composite materials including such coated glass.
    Type: Application
    Filed: December 4, 2003
    Publication date: September 2, 2004
    Inventors: Ulrich Nagorny, Rainer Hoefer, Thorsten Roloff
  • Publication number: 20040129179
    Abstract: The invention relates to the use of fatty (meth)acrylates for dispersing pigments. The fatty (meth)acrylates are obtained by reacting epoxidized fatty acid esters and/or epoxidized triglycerides with acrylic acid and/or methacrylic acid. The reaction is adjusted such that the %-EpO content of the fatty (meth)acrylates is below 0.6 and the following conditions are met for the epoxidized fatty acid esters and/or epoxidized triglycerides on which the fatty (meth)acrylates are based: a) the %-EpO content of the epoxidized fatty acid esters and/or epoxidized triglycerides used is above 6.4; b) less than 20 mole-% of the fatty acid components on which the epoxidized fatty acid esters and/or epoxidized triglycerides are based contain three or more C═C double bonds per fatty acid component; c) more than 60 mole-% of the fatty acid components on which the epoxidized fatty acid esters and/or epoxidized triglycerides are based contain two C═C double bonds per fatty acid component.
    Type: Application
    Filed: February 24, 2004
    Publication date: July 8, 2004
    Inventors: Horst Sulzbach, Alfred Westfechtel, Lars Zander, Rainer Hoefer, Matthias Fies
  • Publication number: 20040110872
    Abstract: Water-based coating composition comprising: (a) from 0.5 to 90% by weight of at least one epoxy resin, wherein the epoxy resin is solid at 20° C., and wherein the epoxy resin is self-dispersing in water; (b) from 0.5 to 90% by weight of at least one (meth)acrylate of a polyol; and (c) from 5.0 to 99.0% by weight of water; wherein the at least one (meth)acrylate comprises at least two (meth)acrylate groups per molecule, and wherein the Brookfield viscosity of the composition is less than 15000 mPas.
    Type: Application
    Filed: October 14, 2003
    Publication date: June 10, 2004
    Inventors: Rainer Hoefer, Ulrich Nagorny
  • Publication number: 20040110873
    Abstract: Water-based coating composition comprising: (a) from 0.5 to 90% by weight of at least one epoxy resin other than self-dispersing epoxy resins; (b) from 0.5 to 90% by weight of at least one (meth)acrylate of a polyol; (c) from 5.0 to 98.0% by weight of water; and (d) from 0.5 to 10% by weight of one or more dispersants; wherein the at least one (meth)acrylate comprises at least two (meth)acrylate groups per molecule, and wherein the Brookfield viscosity of the composition is less than 15000 mPas.
    Type: Application
    Filed: October 14, 2003
    Publication date: June 10, 2004
    Inventors: Ulrich Nagorny, Rainer Hoefer
  • Publication number: 20040097655
    Abstract: Radically post-crosslinked polymers are made by a process comprising the steps of: (1) forming a polyurethane (a*) by reacting a compound (a) with an aliphatic and/or an aromatic isocyanate and a compound (c) wherein compound (a) is the product of the reaction of an epoxidized fatty acid ester and/or an epoxidized triglyceride with acrylic acid and/or methacrylic acid and wherein compound (c) is a diallyl phthalate; (2) forming a crosslinked polyurethane by reacting the polyurethane (a*) with a radical initiator (b). The polymers are useful as components in composites comprised of natural and/or synthetic fibers.
    Type: Application
    Filed: October 30, 2002
    Publication date: May 20, 2004
    Inventors: Horst Sulzbach, Ralf Bemmann, Rainer Hoefer, Michael Skwiercz
  • Publication number: 20040087684
    Abstract: Coating compositions comprising: (a) an epoxy resin in an amount of from 5 to 50% by weight, the epoxy resin comprising a reaction product of epichlorohydrin and a component selected from the group consisting of bisphenol A and bisphenol F; (b) a water-dilutable epoxy resin hardener in an amount of from 5 to 55% by weight; (c) fibers in an amount of from 0.1 to 10% by weight; and (d) a filler in an amount of from 5 to 70% by weight; are described, along with their use as levelling, insulating and other functional coatings.
    Type: Application
    Filed: April 4, 2003
    Publication date: May 6, 2004
    Inventors: Rainer Hoefer, Thorsten Roloff, Horst Sulzbach
  • Publication number: 20040013810
    Abstract: Coating compositions comprising: (a) a water-dispersible epoxy resin which is solid at 20° C., in an amount of from 5 to 50% by weight, with the proviso that the epoxy resin does not comprise a reaction product of epichlorohydrin and a component selected from the group consisting of bisphenol A and bisphenol F; (b) a water-dilutable epoxy resin hardener in an amount of from 5 to 55% by weight; (c) fibers in an amount of from 0.1 to 10% by weight; and (d) a filler in an amount of from 5 to 70% by weight; are described, along with their use as levelling, insulating and other functional coatings.
    Type: Application
    Filed: April 4, 2003
    Publication date: January 22, 2004
    Inventors: Rainer Hoefer, Thorsten Roloff, Hoest Sulzbach
  • Patent number: 6610811
    Abstract: Polyurethanes having improved tear resistance which are the reaction product of the following components: A) a polyol component containing dimer diol and/or trimer triol and/or an OH-terminated polyester produced from polycarboxylic acids, preferably dimer fatty acid and/or trimer fatty acid, and diols and B) an isocyanate component containing prepolymers obtained by reacting polyfunctional isocyanates with dimer diol and/or trimer triol and/or an OH-terminated polyester produced from polycarboxylic acids, preferably dimer fatty acid and/or trimer fatty acid, and diols; and processes for their manufacture.
    Type: Grant
    Filed: August 24, 1999
    Date of Patent: August 26, 2003
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Alfred Westfechtel, Roland Gruetzmacher, Rainer Hoefer
  • Publication number: 20030149220
    Abstract: The invention relates to epoxy resin hardener compositions containing at least one mercaptan hardener and at least one metal salt of C8-24 carboxylic acids. These hardeners are distinguished in particular by the fact that catalyzed resins containing epoxy resins and the hardener compositions according to the invention give high-gloss molding compounds, more particularly coatings, after hardening by crosslinking.
    Type: Application
    Filed: January 8, 2003
    Publication date: August 7, 2003
    Inventors: Rainer Hoefer, Ulrich Nagorny
  • Publication number: 20030149214
    Abstract: Disclosed are polyurethanes formed from (A) a polyol component containing dimeric diol and/or trimeric triol and/or a polyether containing dimeric diol units and/or a polyester with OH-terminal groups formed from polcarboxylic acids, preferably dimeric fatty acids or trimeric fatty acids and diols; and (B) an isocyanate component containing prepolymers obtainable from the reaction between polyfunctional isocyanates and dimeric diol and/or trimeric triol and/or a polyether containing dimeric diol units and/or a polyester with OH-terminal groups formed from polycarboxylic acids, preferably dimeric fatty acids or trimeric fatty acids and diols; at least one of the components (A) and (B) contain dimeric or trimeric fatty acid or dimeric or trimeric fatty alcohol. The proposed polyurethanes have excellent resistance to tear propagation.
    Type: Application
    Filed: August 24, 1999
    Publication date: August 7, 2003
    Inventors: ALFRED WESTFECHTEL, ROLAND GRUETZMACHER, RAINER HOEFER
  • Publication number: 20030139489
    Abstract: Radically post-crosslinked polymers are made by a process comprising the steps of: (1) forming a polyurethane (a*) by reacting a compound (a) with an aliphatic and/or an aromatic isocyanate and a compound (c) wherein compound (a) is the product of the reaction of an epoxidized fatty acid ester and/or an epoxidized triglyceride with acrylic acid and/or methacrylic acid and wherein compound (c) is selected from the group consisting of acrolein, acrylamide, vinyl acetate and styrene; (2) forming a crosslinked polyurethane by reacting the polyurethane (a*) with a radical initiator (b). The polymers are useful as components in composites comprised of natural and/or synthetic fibers.
    Type: Application
    Filed: December 6, 2002
    Publication date: July 24, 2003
    Inventors: Horst Sulzbach, Ralf Bemmann, Rainer Hoefer, Michael Skwiercz
  • Publication number: 20030134927
    Abstract: The invention relates to a method for production of radically post-cured polymers. In a first stage, at least one, or several compounds (a), which are the reaction products of epoxidised fatty acid esters and/or epoxidised triglycerides with acrylic acid and/or methacrylic acid, are converted into the corresponding polyurethane (a*) and said polyurethane (a*) is subsequently radically post-cured, in a second stage, in the presence of at least one radical initiator (b), with the additional proviso that, in the second stage, a combination of compounds (a*) with one or several compounds (c) are used, where the compounds (c) are chosen from the group of the reactive anhydrides. The polymers thus obtained are excellent matrix agents for composite materials.
    Type: Application
    Filed: November 26, 2002
    Publication date: July 17, 2003
    Inventors: Horst Sulzbach, Ralf Bemmann, Rainer Hoefer, Michael Skwiercz
  • Publication number: 20030134928
    Abstract: Radically post-crosslinked polymers are made by a process comprising the steps of: (1) forming a polyurethane (a*) by reacting a compound (a) with an aliphatic and/or an aromatic isocyanate and a compound (c) wherein compound (a) is the product of the reaction of an epoxidized fatty acid ester and/or an epoxidized triglyceride with acrylic acid and/or methacrylic acid and wherein compound (c) is a polyol ester having two or more C═C double bonds per molecule; (2) forming a crosslinked polyurethane by reacting the polyurethane (a*) with a radical initiator (b). The polymers are useful as components in composites comprised of natural and/or synthetic fibers.
    Type: Application
    Filed: November 22, 2002
    Publication date: July 17, 2003
    Inventors: Horst Sulzbach, Ralf Bemmann, Rainer Hoefer, Michael Skwiercz
  • Publication number: 20030119979
    Abstract: The invention relates to aqueous polyurethane dispersions with an acid number of 5 to 60 mg KOH/g of the polyurethane solid, a hydroxyl group content of 0.25 to 6.5% by weight and 2 to 25% by weight of urethane groups (calculated as —NH—CO—O—) based on the polyurethane solid.
    Type: Application
    Filed: October 10, 2002
    Publication date: June 26, 2003
    Inventors: Larz Zander, Rainer Hoefer, Ulrich Nagorny, Silvia Sauf
  • Patent number: 6433125
    Abstract: A process for producing coating compositions involving: (a) providing a reactive diluent, (b) providing an inert solvent, (c) providing a polymeric polyol, (d) providing an isocyanate, (e) reacting (a)-(d) in a reactive diluent comprising a ring opening product of a carboxylic acid ester epoxide with a dihycric or higher alcohol.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: August 13, 2002
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Roland Gruetzmacher, Ulrich Nagorny, Wolfgang Gress, Rainer Hoefer, Andreas Heidbreder, Birgit Hirschberger
  • Patent number: 6362296
    Abstract: The invention relates to a process for producing a polymer or copolymer from monomer material comprising an acrylate, methacrylate, or mixture of such monomers, which comprises the steps of: (a) charging into a continuous tube reactor a feedstock comprising said monomer material and a polymerization initiator; (b) maintaining a flow rate of said material through the reactor at a reaction temperature in the reactor and under pressure sufficient to provide a residence time of the feedstock in the reactor during which polymerization will occur, to form a resin product in the reactor, and said resulting resin product comprising unreacted monomer, and (c) devolatilizing said resin product exiting the reactor to remove unreacted monomers, to provide a substantially monomer-free resin product. Further, the invention relates to resin product made by the process.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: March 26, 2002
    Assignee: Cognis Corporation
    Inventors: Shruti Singhal, Rainer Hoefer, John E. Nowicki, George Roth, Darmesh Chovatia, Shailesh Shah
  • Patent number: 6312513
    Abstract: Pigment concentrates comprising a pigment, a liquid carrier medium and a dimerdiolalkoxylate, wherein a dimer portion of the dimerdiolalkoxylate comprises from about 36 to about 44 carbon atoms, and wherein the at least one dimerdiolalkoxylate has from about 1 to about 200 moles of alkylene oxide per mole of dimerdiol, are described in conjunction with methods of preparing the same.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: November 6, 2001
    Assignee: Cognis Deutschland GmbH
    Inventors: Rainer Hoefer, Heinz-Guenther Schulte, Hans-Christian Raths, Harald Frommelius, Stefan Gollnick, Ulrich Pegelow
  • Patent number: 6312514
    Abstract: Pigment concentrates comprising a pigment, a liquid carrier medium and a diol alkoxylate of the general formulae (I), (II) and/or (III) are described in conjunction with methods of preparing the same.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: November 6, 2001
    Assignee: Cognis Deutschland GmbH
    Inventors: Heinz-Guenther Schulte, Rainer Hoefer, Hans-Christian Raths, Harald Frommelius, Stefan Gollnick