Patents by Inventor Egbert Nienhaus

Egbert Nienhaus 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: 6649688
    Abstract: A coating composition consisting of at least three components, comprising a component (I) comprising at least one hydroxyl-containing oligomeric or polymeric resin dispersed or dissolved in one or more organic, optionally water dilutable solvents, as binder (A), a component (II) comprising at least one polyisocyanate dispersed or dissolved in one or more organic, optionally water dilutable solvents, as crosslinking agent (F), and a component (III) which comprises water, wherein component (I) comprises at least one hydroxyl-containing polyacrylate resin (A) containing polyether sidegroups and/or endgroups of the general formula I Y—(—O—R—)n—  (I) in which the index and variables have the following meanings: n=3 to 100; R=C2 to C6 alkanediyl and C3 to C8 cycloalkanediyl; Y=hydrogen atom or C1 to C4 alkyl; as binder (A).
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: November 18, 2003
    Assignee: BASF Coatings AG
    Inventors: Bernd Mayer, Heinz-Peter Rink, Egbert Nienhaus, Wilma Löcken
  • Publication number: 20030171449
    Abstract: A solvent-containing multicomponent system curable thermally and with actinic radiation (dual cure) and comprising
    Type: Application
    Filed: March 4, 2003
    Publication date: September 11, 2003
    Inventors: Egbert Nienhaus, Bernhard Lettmann
  • Patent number: 6309707
    Abstract: The present invention relates to a coating composition comprising at least three components, characterized in that component (I) contains as binder at least one acrylate copolymer which is dissolved or dispersed in organic solvent and has a number-average molecular weight of between 1000 and 30,000, an OH number of from 40 to 200 and an acid number of from 5 to 150 and/or polyester resin having a number-average molecular weight of between 1000 and 30,000, an OH number of from 30 to 250 and an acid number of from 5 to 150 and/or polyurethane resin having a number-average molecular weight of between 1000 and 30,000, an OH number of from 20 to 200 and an acid number of from 5 to 150, and, if desired, a further binder, the binder components being selected such that a 50% strength solution of the binder in ethoxyethyl propionate has a viscosity at 23° C. of ≦2.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: October 30, 2001
    Assignee: BASF Coatings AG
    Inventors: Bernd Mayer, Uwe Meisenburg, Egbert Nienhaus
  • Patent number: 6180180
    Abstract: The present invention relates to an aqueous two-component polyurethane coating composition comprising a component (I) wich contains as binder (A1) at least one water-soluble or water-dispersible polyester resin (A1) which contains hydroxyl groups and acid groups which can be converted into the corresponding acid anion groups and has an OH number of from 30 to 250 mg of KOH/g and an acid number of from 5 to 150 mg of KOH/g, and (A2) at least one water-soluble or water-dispersible polyurethane resin (A2) which contains hydroxyl groups and acid groups which can be converted into the corresponding acid anion groups and has an OH number of from 20 to 200 mg of KOG/g and an acid number of from 5 to 150 mg of KOH/g, and (A3) at least one water-soluble or water-dispersible acrylate copolymer which contains hydroxyl groups and acid groups which can be converted into the corresponding acid anion groups, and/or an acrylated polyester and/or an acrylated polyurethane, which has an OH number of from 40 to 200 mg of KOG
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: January 30, 2001
    Assignee: BASF Coatings AG
    Inventors: Horst Hintze-Br{umlaut over (u)}ning, Peter Rink, Egbert Nienhaus
  • Patent number: 6130308
    Abstract: The invention relates to coating compositions for the production of coatings which are resistant to condensed water and comprise binders based on a polyurethane resin PUR which comprises alpha, omega-polymethacrylatediols (A) as structural units. The alpha, omega-polymethacrylatediols (A) preferably consist of the monomer units methyl methacrylate, ethyl methacrylate, propyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, tert-butyl methacrylate, n-pentyl methacrylate, amyl methacrylate, n-hexyl methacrylate, n-octyl methacrylate, 2-ethylhexyl methacrylate, n-decyl methacrylate, cyclopentyl methacrylate, cyclohexyl methacrylate, 4-tert-butylcyclohexyl methacrylate, cyclooctyl methacrylate, phenyl methacrylate or isobornyl methacrylate or mixtures thereof.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: October 10, 2000
    Assignee: BASF Coating AG
    Inventors: Heinz-Peter Rink, Bernd Mayer, Egbert Nienhaus
  • Patent number: 6025031
    Abstract: The present invention relates to a coating composition consisting of at least three components (I), (II) and (III), component (I) containing as binder (A) at least one acrylate copolymer (A1) which is dispersed or dissolved in organic, optionally water-dilutable solvent and/or one polyester resin (A2) which is dispersed or dissolved in organic, optionally water-dilutable solvent and/or one polyurethane resin (A3) which is dispersed or dissolved in organic, optionally water-dilutable solvent and/or optionally a further binder (A4),component (II) contains at least one nonblocked polyisocyanate as crosslinking agent, andcomponent (III) contains as constituent essential to the invention an aqueous dispersion, prepared in a single- or multistage method, of a hydrophilicized polymer resin HP based on a hydrophobic polymer resin HP' and also, if desired, contains components (A1) and/or (A2) and/or (A3) and/or (A4) in aqueous dispersion.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: February 15, 2000
    Assignee: BASF Coatings AG
    Inventors: Bernhard Lettmann, Heinz-Peter Rink, Bernd Mayer, Egbert Nienhaus, Sunitha Grandhee
  • Patent number: 5876802
    Abstract: The present invention relates to an aqueous two-component polyurethane coating composition comprisingA) a water-dilutable polyacrylate resin (A) having an OH number of from 40 to 200 and an acid number of from 20 to 100 mg of KOH/g, andB) a polyisocyanate component,characterized in that the water-dilutable acrylate resin is obtainable by solution polymerization ofat least one ester of (meth)acrylic acid and a cycloaliphatic C.sub.6 to C.sub.10 alcohol, with the exception of cyclohexyl methacrylate,at least one hydroxyl-containing monomer,if desired, at least one vinyl ester of .alpha.-branched monocarboxylic acids having 5 to 18 carbon atoms per molecule and/or at least one reaction product of acrylic acid and/or methacrylic acid with the glycidyl ester of .alpha.
    Type: Grant
    Filed: July 3, 1997
    Date of Patent: March 2, 1999
    Assignee: BASF Coatings AG
    Inventors: Michael Brunnemann, Uwe Meisenburg, Egbert Nienhaus, Heinz-Peter Rink
  • Patent number: 5834555
    Abstract: The present invention relates to an aqueous multicomponent polyurethane coating composition comprisingA) a water-dilutable polyaddition resin (A1) and/or polycondensation resin (A2) containing hydroxyl and carboxylate groups and having an OH number of from 40 to 200 mg of KOH/g, preferably from 60 to 140 mg of KOH/g, an acid number of from 15 to 100 mg of KOH/g, preferably from 25 to 50 mg of KOH/g, and a glass transition temperature of from -40.degree. C. to +60.degree. C., preferably from -20.degree. C. to +40.degree. C.,B) a polyisocyanate component (B) as crosslinking agent andC) at least one additive,characterized in that it contains as additive a carbodiimide component (C) which has a content of carbodiimide groups --N.dbd.C.dbd.N-- of from 2 to 30% by weight, on average at least 0.
    Type: Grant
    Filed: November 4, 1996
    Date of Patent: November 10, 1998
    Assignee: BASF Lacke + Farben, AG
    Inventors: Uwe Meisenburg, Egbert Nienhaus, Rolf Seidemann, Bernd Mayer, Anthony J. Tye
  • Patent number: 5670600
    Abstract: The present invention relates to an aqueous two-component polyurethane coating composition comprisingA) a water-dilutable polyacrylate resin (A) having an OH number of from 40 to 200 mg of KOH/g, an acid number of from 20 to 100 mg of KOH/g and a glass transition temperature of from -40.degree. C. to +60.degree. C., andB) a polyisocyanate component as crosslinking agent,characterized in that the water-dilutable acrylate resin is obtainable by solution polymerization, in the presence of a polymerization initiator, of at least one monomer which is free of carboxyl groups, at least one monomer which contains hydroxyl groups, at least one vinyl ester of .alpha.-branched monocarboxylic acids having 5 to 18 carbon atoms per molecule and/or at least one reaction product of acrylic acid and/or methacrylic acid with the glycidyl ester of .alpha.
    Type: Grant
    Filed: December 20, 1995
    Date of Patent: September 23, 1997
    Assignee: BASF Lacke + Farben, AG
    Inventors: Egbert Nienhaus, Bernd Mayer, Uwe Meisenburg