Patents by Inventor Claudia Pietsch

Claudia Pietsch 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: 10494541
    Abstract: The present invention relates to an aqueous dispersion obtained by a process comprising the steps of (a) preparing an acidic copolymer (A) by radical copolymerization of monomers comprising: (a1) at least one unsaturated fatty acid, (a2) at least one ethylenically unsaturated monomer containing at least one acid group or group capable of forming an acid group, (a3) at least one other ethylenically unsaturated monomer different from (a1) and (a2), (b) neutralizing totally or partially the acid groups of copolymer (A) and dissolving it in water, (c) copolymerizing in the solution obtained at step (b) a monomer mixture different from the monomer mixture of step (a) to form a copolymer (B) as well as blends based on such dispersions, especially in combination with oxidatively drying alkyds.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: December 3, 2019
    Assignee: ALLNEX AUSTRIA GMBH
    Inventors: Andreas Steiner, Florian Lunzer, Michaela Zirngast, Claudia Pietsch, Johann Billiani, Michael Gobec, Wolfgang Hyden
  • Publication number: 20180086936
    Abstract: The present invention relates to an aqueous dispersion obtained by a process comprising the steps of (a) preparing an acidic copolymer (A) by radical copolymerization of monomers comprising: (a1) at least one unsaturated fatty acid, (a2) at least one ethylenically unsaturated monomer containing at least one acid group or group capable of forming an acid group, (a3) at least one other ethylenically unsaturated monomer different from (a1) and (a2), (b) neutralizing totally or partially the acid groups of copolymer (A) and dissolving it in water, (c) copolymerizing in the solution obtained at step (b) a monomer mixture different from the monomer mixture of step (a) to form a copolymer (B) as well as blends based on such dispersions, especially in combination with oxidatively drying alkyds.
    Type: Application
    Filed: April 7, 2016
    Publication date: March 29, 2018
    Applicant: Allnex Austria GmbH
    Inventors: Andreas STEINER, Florian LUNZER, Michaela ZIRNGAST, Claudia PIETSCH, Johann BILLIANI, Michael GOBEC, Wolfgang HYDEN
  • Patent number: 6258897
    Abstract: Low molar mass polyester polyols having a weight-average molar mass M, of not more than 2000 g/mol, with hydroxyl numbers of from 80 to 300 mg/g and acid numbers of from 5 to 35 mg/g, comprising the stated mole fractions (in %=mol/100 mol) of structural units derived from: a) from 1 to 45% of aliphatic polycyclic polyhydroxy compounds having at least two hydroxyl groups per molecule, b) from 5 to 50% of branched aliphatic acyclic dihydroxy compounds, c) from 30 to 50% of aliphatic cyclic polycarboxylic acids, d) from 0 to 30% of aliphatic acyclic or monocyclic polyhydroxy compounds having three or more hydroxyl groups per molecule, and e) from 0 to 10% of polyfunctional compounds selected from aliphatic linear and monocyclic dihydroxy compounds, aliphatic linear and branched dicarboxylic acids, aromatic dicarboxylic acids and polycaboxylic acids having three or more carboxyl groups per molecule, and also f) from 0 to 10% of monofunctional units selected from monocarboxylic acids and monoalcohols,
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: July 10, 2001
    Assignee: Vianova Resins AG
    Inventors: Ulrich Epple, Ulrike Kuttler, Claudia Pietsch
  • Patent number: 6211306
    Abstract: Mixtures of low molar mass polyester polyols having a weight-average molar mass Mw of not more than 2000 g/mol, with hydroxyl numbers of from 80 to 300 mg/g and acid numbers of from 5 to 35 mg/g, comprising structural units derived from aliphatic polycyclic polyhydroxy compounds having at least two hydroxyl groups per molecule, branched aliphatic acyclic dihydroxy compounds, aliphatic cyclic polycarboxylic acids, aliphatic acyclic or monocyclic polyhydroxy compounds having three or more hydroxyl groups per molecule, and polyfunctional compounds selected from aliphatic linear and monocyclic dihydroxy compounds, aliphatic linear and branched dicarboxylic acids, aromatic dicarboxylic acids and polycarboxylic acids having three or more carboxyl groups per molecule, and also monofunctional units selected from monocarboxylic acids and monoalcohols, and acrylic copolymers made by radically initiated polymerisation in the presence of cyclic compounds that can react with hydroxy or acid functional comonomers can be us
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: April 3, 2001
    Assignee: Solutia Austria GmbH
    Inventors: Ulrich Epple, Ulrike Kuttler, Claudia Pietsch
  • Patent number: 6087469
    Abstract: Low molar mass polyester polyols having a weight-average molar mass M.sub.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: July 11, 2000
    Assignee: Vianova Resins AG
    Inventors: Ulrich Epple, Ulrike Kuttler, Claudia Pietsch
  • Patent number: 6048936
    Abstract: Acrylate copolymers AB obtainable by polymerization of a monomer mixture A in an organic solvent or in bulk, the monomer mixture A comprising proportions by mass of from 25 to 80% of C.sub.1 -C.sub.20 -alkyl (meth)acrylates whose alkyl radicals can be linear, branched or cyclic, from 1 to 28% of C.sub.2 -C.sub.20 -hydroxyalkyl (meth)acrylates whose hydroxyalkyl radicals can be linear, branched or cyclic, from 0.5 to 20% of .alpha.,.beta.-unsaturated carboxylic acids and from 0 to 55% of aromatic vinyl compounds or aliphatic vinyl esters and vinyl ethers, vinyl halides, olefinically unsaturated ketones or aldehydes, esters of glycidyl alcohol or methylglycidyl alcohol with olefinically unsaturated carboxylic acids, or nitriles of .alpha.,.beta.
    Type: Grant
    Filed: August 7, 1998
    Date of Patent: April 11, 2000
    Assignee: Vianova Resins AG
    Inventors: Ulrich Epple, Gert Dworak, Ulrike Kuttler, Claudia Pietsch