Patents by Inventor Kathrin Lehmann

Kathrin Lehmann 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: 20130214211
    Abstract: Polymer compositions which are antistatic or have been made conductive and the production thereof.
    Type: Application
    Filed: November 2, 2011
    Publication date: August 22, 2013
    Applicant: Evonik Goldschmidt GmbH
    Inventors: Kathrin Lehmann, Stefan Stadtmueller, Peter Schwab
  • Publication number: 20130217907
    Abstract: Branched polysiloxanes of formula (I) Ma1MHa2MVia3Db1DHb2DVib3Tc1THc2TVic3Qd??(I) wherein M=[R2R12SiO1/2], MH=[R12HSiO1/2], MVi=[R3R12SiO1/2], D=[R12SiO2/2], DH=[R1HSiO2/2], DVi=[R1R3SiO2/2], T=[R4SiO3/2], TH=[HSiO3/2], TVi=[R3SiO3/2], Q=[SiO4/2], R1 is mutually independently identical or different, linear or branched, saturated or unsaturated hydrocarbon moieties, R2 is mutually independently the same as R1, an alkoxy moiety or a hydroxy group, R3 is mutually independently identical or different, linear or branched, olefinically unsaturated hydrocarbon moieties, R4 is mutually independently R1 or identical or different linear, branched and/or cyclic, saturated or unsaturated hydrocarbon moieties comprising heteroatoms, a1=from 0 to 50, a2=from 1 to 50, a3=from 1 to 50, b1=from 10 to 5000, b2=from 0 to 30, b3=from 0 to 30, c1=from 0 to 50, c2=from 0 to 50 c3=from 0 to 50, d=from 0 to 50, with the proviso that the sum c1+c2+c3+d is greater than or equal to 1, are provided.
    Type: Application
    Filed: February 20, 2013
    Publication date: August 22, 2013
    Applicant: Evonik goldschmidt GmbH
    Inventors: Frauke Henning, Sadik Amajjahe, Ute Linke, Michael Ferenz, Wilfried Knott, Volker Arning, Bastian Matthias Brugger, Kathrin Lehmann
  • Publication number: 20130203918
    Abstract: The present invention relates to weathering-resistant, colored moldings made of poly(alkyl) (meth)acrylate with improved gloss and resistance to mechanical influences acting on the surface of the molding, in particular with improved wipe resistance and improved scratch resistance, and also to molding compositions for producing the same.
    Type: Application
    Filed: August 22, 2011
    Publication date: August 8, 2013
    Applicant: Evonik Roehm GmbH
    Inventors: Victor Khrenov, Andreas Mischlich, Ursula Golchert, Stefan Nau, Anton Halblaender, Klaus Schultes, Marc Poth, Antonios Manis, Kathrin Lehmann, Zhen Zhu
  • Patent number: 8268939
    Abstract: Use of one or more mixed curable hydroxyl-containing silyl polyethers as a constituent of compositions, as modifiers for surfaces, the silyl polyethers being prepared by DMC-catalysed alkoxylation of epoxy-functional alkoxysilanes.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: September 18, 2012
    Assignee: Evonik Goldschmidt GmbH
    Inventors: Thomas Ebbrecht, Frank Schubert, Matthias Naumann, Wilfried Knott, Kathrin Lehmann, Joachim Venzmer, Berend-Jan De Gans, Stefan Silber, Frauke Henning
  • Patent number: 8202935
    Abstract: The invention provides dispersing resins for solids, obtainable by full or partial reaction of A) one or more amino-functional polymers with B) one or more polyesters of the general formula (I)/(Ia) T-C(O)—[O-A-C(O)]x—OH??(I) T1-O—[C(O)-A-O—]y—Z??(Ia) ?and C) one or more polyethers of the general formula (II)/(IIa) T2-B—Z??(II) T-O—B—Z??(IIa).
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: June 19, 2012
    Assignee: Evonik Goldschmidt GmbH
    Inventors: Cornelia Alzer, Pedro Cavaleiro, Eberhard Esselborn, Kathrin Lehmann, Sascha Oestreich
  • Publication number: 20100184913
    Abstract: Use of one or more mixed curable hydroxyl-containing silyl polyethers as a constituent of compositions, as modifiers for surfaces, the silyl polyethers being prepared by DMC-catalysed alkoxylation of epoxy-functional alkoxysilanes.
    Type: Application
    Filed: December 3, 2009
    Publication date: July 22, 2010
    Inventors: Thomas EBBRECHT, Frank Schubert, Matthias Naumann, Wilfried Knott, Kathrin Lehmann, Joachim Venzmer, Berend-Jan De Gans, Stefan Silber, Frauke Henning
  • Patent number: 7645335
    Abstract: Aqueous dispersion which comprises hydrophobized silicon dioxide powder with a content of between 5 and 50 wt. % and which comprises at least one compound of the general formula R & supl; —COO—(CH2-CH(Ph)—O)a-(CnH2n-xR2x-O)b-R3 (I). It is prepared by dispersing the hydrophobic silicon dioxide powder, dispersing agent and optionally pH-regulating substances and further additives in an aqueous medium. It can be employed as an additive to waterborne fillers in the automobile industry, as a coating constituent in can and coil coating processes, as an additive in water-based UV-curable formulations e.g. for wood preservation and as a constituent of protective lacquer films.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: January 12, 2010
    Assignees: Degussa AG, Goldschmidt GmbH
    Inventors: Wolfgang Lortz, Christoph Batz-Sohn, Gabriele Perlet, Werner Will, Kathrin Lehmann, Angela Rüttgerodt
  • Patent number: 7598215
    Abstract: The invention provides hydroxyl-containing surfactants with low surface tension and provides for their use as surfactants in aqueous coating formulations, the surfactants being preparable by reacting one or more epoxides of formula (I) with at least one hydroxy compound of formula (II) and/or at least one, or two or more, amine(s) of formula (III) reacted in preferably either approximately equivalent amounts of hydroxy and/or amino groups with epoxide groups, or with an excess of hydroxy or amine hydrogen atoms, respectively.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: October 6, 2009
    Assignee: Goldschmidt GmbH
    Inventors: Petra Hinrichs, Kathrin Lehmann, Isabella Ulrich-Brehm, Bernd Weyershausen
  • Patent number: 7442724
    Abstract: The invention relates to the use of copolymers with styrene-oxide-based, vinyl-functionalized polyethers for preparing aqueous pigment preparations.
    Type: Grant
    Filed: October 19, 2004
    Date of Patent: October 28, 2008
    Assignee: Goldschmidt GmbH
    Inventors: Jutta Esselborn, Philippe Favresse, Kathrin Lehmann, Ute Linke, Angela Rüttgerodt, Stefan Silber
  • Publication number: 20080200576
    Abstract: The invention provides a process for producing a polymer mixture, which process is characterized in that nanoscale agglomerates of dendritic polymers having a molar mass of between 400 and 100 000 g/mol are formed by lowering the temperature to below the upper critical solution temperature or raising the temperature to above the lower critical solution temperature of the system in a polymer matrix, and the system is converted into the solid aggregate state by polymerization, temperature change, UV curing, pressure lowering, heat treatment or evaporation of volatile components of the system.
    Type: Application
    Filed: November 25, 2005
    Publication date: August 21, 2008
    Applicant: DEGUSSA GmbH
    Inventors: Matthias Seiler, Pedro Cavaleiro, Kathrin Lehmann, Bernd Weyershausen, Markus Schwarz, Friedrich Schmidt
  • Publication number: 20080188673
    Abstract: The invention provides low surface tension surfactants based on ether alcohol and provides for their use as surfactants in aqueous coating formulations, said surfactants being preparable by reacting at least one hydroxy compound of formula (I): with at least one epoxide of formula (II): and/or at least one epoxide of formula (V): in substantially equivalent amounts of hydroxyl and epoxide groups.
    Type: Application
    Filed: March 1, 2006
    Publication date: August 7, 2008
    Applicant: Goldschmidt GmbH
    Inventors: Kathrin Lehmann, Petra Hinrichs, Philipp Tomuschat, Isabella Ulrich-Brehm
  • Patent number: 7399348
    Abstract: The invention provides low surface tension surfactants based on amino alcohol and also provides for their use in aqueous coating formulations, said surfactants being preparable by reacting at least one secondary amine of formula (I): with at least one diepoxide of formula (IV): and/or with at least one triepoxide of formula (IV): in essentially equivalent amounts of amine hydrogen atoms and epoxide groups.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: July 15, 2008
    Assignee: Goldschmidt GmbH
    Inventors: Gaetano Blanda, Ingrid Eiβmann, Kathrin Lehmann, Heike Lüther, Stefan Silber, Philipp Tomuschat
  • Patent number: 7399487
    Abstract: Aqueous dispersions comprising microfine metal oxide particles and dispersion auxiliaries, wherein, as dispersion auxiliaries, at least one of the compounds of the general formula (I) in which M is hydrogen, monovalent or divalent metal cation, ammonium ion, organic amine radical; a is 1, or where M is a divalent metal cation, is ½; X is likewise —OMa or —O—(CpH2pO)q—Rl where R1?H, aliphatic hydrocarbon radical having 1-20 carbon atoms, cycloaliphatic hydrocarbon radical having 5 to 8 carbon atoms, optionally substituted aryl radical having 6 to 14 carbon atoms, p=2 to 4, q=0 to 100, —NHR2 and/or —NR22 where R2?R1 or —CO—NH2; Y is O, NR2; A1 is ethylene radical, propylene radical, isopropylene radical, butylene radical; m is 10 to 30; n is 0 to 50; and k is 10 to 30, where the summ+k is in the range from 20 to 60, is co-used.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: July 15, 2008
    Assignee: Goldschmidt GmbH
    Inventors: Christoph Batz-Sohn, Petra Brandt, Thomas Dietz, Steffen Hasenzahl, Klaus Jenni, Kathrin Lehmann, Ralf Mathiak, Angela Rüttgerodt
  • Patent number: 7393396
    Abstract: The invention provides a process for producing homogeneous and storage-stable pastes, inks, paints, coverings, coatings and coating materials which comprises using ionic liquids as dispersing additives.
    Type: Grant
    Filed: February 16, 2005
    Date of Patent: July 1, 2008
    Assignee: Goldschmidt GmbH
    Inventors: Kathrin Lehmann, Stefan Silber, Bernd Weyershausen
  • Publication number: 20070199477
    Abstract: A paste is provided having as solid phase at least one nanoscale powder and as liquid phase at least one dispersant, wherein the fraction of the nanoscale powder is 30% to 95% by weight and the fraction of the liquid phase is at least 5% by weight, based in each case on the total amount of the paste, the paste has a water content of less than 3% by weight of water and the liquid phase has a VOC content of less than 10 g/l, and the use of the paste in preparing dispersions, the dispersions prepared thereby, and use in a variety of other enduses.
    Type: Application
    Filed: August 25, 2006
    Publication date: August 30, 2007
    Applicant: DEGUSSA AG
    Inventors: Sven Hill, Kathrin Lehmann, Pedro Cavaleiro, Stefan Heberer, Markus Pridoehl
  • Publication number: 20070145327
    Abstract: Aqueous dispersion which comprises hydrophobized silicon dioxide powder with a content of between 5 and 50 wt. % and which comprises at least one compound of the general formula R & supl; —COO—(CH2-CH(Ph)—O)a-(CnH2n-xR2xO)b-R3 (I). It is prepared by dispersing the hydrophobic silicon dioxide powder, dispersing agent and optionally pH-regulating substances and further additives in an aqueous medium. It can be employed as an additive to waterborne fillers in the automobile industry, as a coating constituent in can and coil coating processes, as an additive in water-based UV-curable formulations e.g. for wood preservation and as a constituent of protective lacquer films.
    Type: Application
    Filed: March 26, 2004
    Publication date: June 28, 2007
    Applicants: Degussa AG, Goldschmidt GmbH
    Inventors: Wolfgang Lortz, Christoph Batz-Sohn, Gabriele Perlet, Werner Will, Kathrin Lehmann, Angela Ruttgerodt
  • Patent number: 7118619
    Abstract: The invention provides for the use of silicone resins obtainable by reacting a) an alkoxysiloxane of the general formula R a 2 ? Si ? ( OR 1 ) b ? O 4 - ( a + b ) 2 with b) one or more hydroxyl-containing polyesters, and if desired c) one or more low molecular weight alcohols, it being possible for the alkoxysilane to be reacted partially and completely, based on the amount of (OR1) groups in a), but the reaction being taken at least to the point where a clear solution is obtained, as dispersants for solids for producing coatings, printing inks and/or print varnishes.
    Type: Grant
    Filed: January 22, 2004
    Date of Patent: October 10, 2006
    Assignee: Goldschmidt GmbH
    Inventors: Petra Brandt, Kathrin Lehmann, Sascha Oestreich, Cornelia Schröter, Stefan Silber
  • Publication number: 20060217284
    Abstract: The invention provides hydroxyl-containing surfactants with low surface tension and provides for their use as surfactants in aqueous coating formulations, the surfactants being preparable by reacting one or more epoxides of formula (I) with at least one hydroxy compound of formula (II) and/or at least one, or two or more, amine(s) of formula (III) reacted in preferably either approximately equivalent amounts of hydroxy and/or amino groups with epoxide groups, or with an excess of hydroxy or amine hydrogen atoms, respectively.
    Type: Application
    Filed: March 22, 2006
    Publication date: September 28, 2006
    Inventors: Petra Hinrichs, Kathrin Lehmann, Isabella Ulrich-Brehm, Bernd Weyershausen
  • Publication number: 20060183815
    Abstract: The invention provides dispersing resins for solids, obtainable by full or partial reaction of A) one or more amino-functional polymers with B) one or more polyesters of the general formula (I)/(Ia) T-C(O)—[O-A-C(O)]x—OH??(I) T1-O—[C(O)-A-O—]y-Z??(Ia) ?and C) one or more polyethers of the general formula (II)/(IIa) T2-B-Z??(II) T-O-B-Z??(IIa).
    Type: Application
    Filed: January 26, 2006
    Publication date: August 17, 2006
    Inventors: Cornelia Alzer, Pedro Cavaleiro, Eberhard Esselborn, Kathrin Lehmann, Sascha Oestreich
  • Patent number: 7018458
    Abstract: The invention relates to the use of organofunctionally modified polysiloxanes containing phenyl derivatives as dispersants for preparing aqueous pigment formulations, paints, coating materials, and coatings. For the purposes of this invention the term “polysiloxanes” shall be understood to embrace oligomeric siloxanes as well.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: March 28, 2006
    Assignee: Goldschmidt GmbH
    Inventors: Wilfried Knott, Kathrin Lehmann, Stefan Silber