Patents by Inventor Klaus Weidemeier

Klaus Weidemeier 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).

  • Process for coating vehicle bodies and aqueous coating
    Patent number: 5589228
    Abstract: The invention relates to a process for coating vehicle bodies in which an aqueous coating containing as the binder a combination of a water-dilutable polyurethane resin, a water-dilutable polyester resin and an aminoplast resin is employed as the stone-chip intermediate primer and/or filler.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: December 31, 1996
    Assignee: BASF Lacke + Farben, AG
    Inventors: Egon Wegner, Ulrich Poth, Lutz-Werner Gross, Klaus Weidemeier
  • Epoxide resin-modified polyester coat with alkyd topcoat
    Patent number: 5460889
    Abstract: A coating composition comprises an alkyd resin based topcoat and a water dilutable coating comprising an epoxy resin-modified polyester binder which is water-dilutable upon base neutralization of the free carboxyl groups and is prepared by the reaction of (A) a polyester containing (cyclo)aliphatic groups having at least six carbon atoms derived from (a.sub.1) a polycarboxylic acid with at least three carboxyl groups and/or (a.sub.2) a polyol with at least one carboxyl group, (a.sub.3) a polycarboxylic acid with two carboxyl groups and (a.sub.4) a polyol; and (B) a bisphenol epoxide resin.
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: October 24, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Lutz-Werner Gross, Ulrich Poth, Dieter Hille, Klaus Weidemeier
  • Spray coating with carboxyl polyol-derived polyester and epoxy resin
    Patent number: 5380565
    Abstract: A substrate is spray coated with a composition containing an epoxy resin-modified polyester binder which is water-dilutable upon base neutralization of the free carboxyl groups and is prepared via the reaction of A) a polyester containing (cyclo)aliphatic groups having at least six carbon atoms derived from (a.sub.1) a polycarboxylic acid with at least three carboxyl groups and/or (a.sub.2) a polyol with at least one carboxyl group, and (a.sub.3) a polycarboxylic acid with two carboxyl groups and (a.sub.4) a polyol; and (B) a bisphenol epoxy resin.
    Type: Grant
    Filed: October 5, 1993
    Date of Patent: January 10, 1995
    Assignee: BASF L+F Aktiengesellschaft
    Inventors: Lutz-Werner Gross, Ulrich Poth, Dieter Hille, Klaus Weidemeier
  • Carboxyl polyol-derived polyester and epoxide resin aqueous coating
    Patent number: 5272187
    Abstract: A water-dilutable coating comprising a binder obtained from an epoxide resin-modified polyester possessing free carboxyl groups prepared from the reaction of:A) a polyester polymerized from:a.sub.1) a polycarboxylic acid containing at least three carboxyl groups and/ora.sub.2) a polyol containing at least one carboxyl group anda.sub.3) a polycarboxylic acid containing two carboxyl groups anda.sub.4) a polyol, wherein the polyester contains (cyclo)aliphatic elements having at least six carbon atoms;B) from 0.3-1.5 equivalents per polyester molecule of a bisphenol epoxide resin or a reaction product thereof containing at least one epoxide group per molecule with a carboxylic acid; andC) a crosslinking agent.
    Type: Grant
    Filed: October 21, 1992
    Date of Patent: December 21, 1993
    Assignee: BASF Lacke & Farben AG
    Inventors: Lutz-Werner Gross, Ulrich Poth, Dieter Hille, Klaus Weidemeier
  • Water-thinnable baking paints and use thereof as filler material and intermediate stone chip resistant coat, as well as process for painting motor vehicle bodies
    Patent number: 5210154
    Abstract: The invention relates to water-thinnable baking paints, the use thereof as filler material and intermediate stone chip resistant coat as well as a process for painting motor vehicle bodies.The water-thinnable baking paints comprise as binders a combination of(I) 20 to 70% by weight of a water-thinnable polyurethane resin with an acid value of 15 to 35,(II) 20 to 70% by weight of an epoxy resin-modified water-thinnable polyester which can be prepared by reacting a polyester (A) with a molecular weight (number average) below 2000, an acid value of 35-240 and a hydroxyl value of 56-320, with 0.3 to 1.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: May 11, 1993
    Assignee: BASF Lacke + Farben Aktiengesellschaft
    Inventors: Klaus Weidemeier, Winfried Schmidt, Hans-Dieter Hille, Bodo Muller
  • Epoxide resin-modified polyesters derived from carboxyl polyol
    Patent number: 5183835
    Abstract: A water-dilutable coating comprising a binder obtained from an epoxide resin-modified polyester possessing free carboxyl groups prepared from the reaction of:A) a polyester polymerized from:a.sub.1) a polycarboxylic acid containing at least three carboxyl groups and/ora.sub.2) a polyol containing at least one carboxyl group anda.sub.3) a polycarboxylic acid containing two carboxyl groups anda.sub.4) a polyol; wherein the polyester contains (cyclo)aliphatic elements having at least six carbon atoms; andB) from 0.3-1.5 equivalents per polyester molecule of a bisphenol epoxide resin or a reaction product thereof containing at least one epoxide group per molecule with a carboxylic acid.
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: February 2, 1993
    Assignee: BASF Lacke & Farben AG
    Inventors: Lutz-Werner Gross, Ulrich Poth, Dieter Hille, Klaus Weidemeier