Patents by Inventor Ulrich Poth

Ulrich Poth 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: 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
  • Patent number: 5534306
    Abstract: The invention relates to a process for the preparation of multicoat finishes of the basecoat/clearcoat type in which transparent topcoats are employed which contain(A) as binder, an autocrosslinkable polyacrylate resin which contains on statistical average at least one epoxide group, at least one acid anhydride group and at least 0.2 tri-, di- or monoalkoxysilane group per molecule, or a mixture of such autocrosslinkable polyacrylate resins, and(B) at least one acid and/or at least one base as crosslinking catalyst.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: July 9, 1996
    Assignee: BASF Lacke + Farben, AG
    Inventors: Ulrike Rockrath, Peter Betz, Ulrich Poth, Georg Wigger
  • Patent number: 5516559
    Abstract: The invention relates to a process for the production of two-coat finishes of the basecoat/clearcoat type, in which nonaqueous transparent topcoats are employed, which comprise(A) a synthetic resin containing hydroxyl groups or a mixture of synthetic resins containing hydroxyl groups,(B) an amino resin or a mixture of amino resins, and(C) a blocked polyisocyanate or a mixture of blocked polyisocyanates,in which component (C) comprises isocyanate groups blocked both with a blocking agent (I) and with a blocking agent (II), and the blocking agent (I) being a dialkyl malonate, the blocking agent (II) being a blocking agent which is different from (I) and contains active methylene groups or an oxime, and the ratio of equivalents between the isocyanate groups blocked with (I) and the isocyanate groups blocked with (II) being between 1.0:1.0 and 9.0:1.0.
    Type: Grant
    Filed: August 23, 1994
    Date of Patent: May 14, 1996
    Assignee: BASF Lacke+Farben, AG
    Inventors: Ulrike Rockrath, Georg Wigger, Ulrich Poth
  • Patent number: 5502101
    Abstract: The invention relates to basecoats for the production of finishes of the basecoat/clearcoat type which comprise a water-thinnable polyacrylate resin which can be obtained by polymerizing, either successively or in part amounts, monomers containing carboxyl groups and monomers free from carboxyl groups in an organic solvent to form a polyacrylate resin which is neutralized, at least partially, and dispersed in water.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: March 26, 1996
    Assignee: BASF Lacke + Farben, AG
    Inventors: Stephan Schwarte, Arnold Dobbelstein, deceased, Ju/ rgen Niemann, Walter Lassmann, Susanne Piontek, Ulrich Poth, Klaus Eikelmann
  • 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
  • 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
  • Patent number: 5368944
    Abstract: The invention relates to a process for the production of multicoat finishes, in which(1) an aqueous pigmented basecoat containing a waterthinnable polyurethane resin is applied to the substrate surface as basecoat,(2) a polymer film is formed from the coating applied in stage (1),(3) a transparent topcoat is applied to the basecoat obtained in this way and subsequently(4) the basecoat is baked together with the topcoat, and the water-thinnable polyurethane resin contains structural units of the formula ##STR1## X representing a divalent aromatic hydrocarbon radical and R.sup.1 and R.sup.2 representing an alkyl radical having 1 to 4 carbon atoms.
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: November 29, 1994
    Assignee: BASF Lacke + Farben Aktiengesellschaft
    Inventors: Michael Hartung, Walter Lassmann, Ulrich Poth, Egon Wegner
  • Patent number: 5336716
    Abstract: The invention relates to paints comprising(i) a resin (A) which contains hydroxyl groups and .alpha.,.beta.-unsaturated carbonyl groups or a mixture of such resins, and/or(ii) a mixture consisting ofa) a hydroxyl-containing resin (B) or a mixture of such resins andb) a crosslinking agent (C) which contains .alpha.,.beta.-unsaturated carbonyl groups or a mixture of such crosslinking agents and(iii) a catalyst (D) which catalyzes the reaction of hydroxyl groups with .alpha.,.beta.-unsaturated carbonyl groups or a mixture of such catalysts.The invention is characterized in that the catalyst (D) is a Bronsted acid.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: August 9, 1994
    Assignee: BASF Lacke + Farben Aktiengesellschaft
    Inventors: Elisabeth Kappes, Ulrich Poth
  • Patent number: 5275847
    Abstract: The invention relates to a process for the production of a multi-layered coating in which the aqueous top coating composition contains a water-dilutable polyacrylate resin which has a hydroxyl number of 40 to 200, an acid number of 20 to 100 and a glass transition temperature (T.sub.G) of -40.degree. C. to +60.degree. C. and can be prepared by adding a mixture (I) of a (meth)acrylic acid ester and a copolymerizable monomer containing hydroxyl groups to an organic solvent, subjecting the mixture to free radical polymerization and, when the addition of mixture (I) has ended, adding a monomer containing carboxyl groups and polymerizing the mixture further.
    Type: Grant
    Filed: January 29, 1993
    Date of Patent: January 4, 1994
    Assignee: BASF Lacke+Farben Aktiengesellschaft
    Inventors: Stephan Schwarte, Ulrich Poth
  • 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
  • Patent number: 5266361
    Abstract: The invention relates to a process for the preparation of a multicoat coating which uses an aqueous, clear topcoat composition containing a polyacrylate resin as binder. The polyacrylate resin can be obtained by adding an ethylenically unsaturated monomer (a1) which contains carboxyl groups, and a mixture (b) consisting of (meth)acrylic esters which are free from carboxyl groups and of ethylenically unsaturated monomers which contain hydroxyl groups, to an organic solvent or mixture of solvents either successively or alternately in part amounts and polymerizing the mixture in the presence of a radical-forming initiator, neutralizing the resultant polyacrylate resin after termination of the polymerization and dispersing it in water. The type and amount of (a1) and (b) are chosen such that the polyacrylate resin has a hydroxyl value of 40 to 200, an acid value of 20 to 100 and a glass transition temperature (T.sub.G) of -40.degree. C. to 60.degree. C.
    Type: Grant
    Filed: May 3, 1991
    Date of Patent: November 30, 1993
    Assignee: BASK Lacke + Farben Aktiengesellschaft DE/DE
    Inventors: Stephan Schwarte, Ulrich Poth
  • 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
  • Patent number: 4576868
    Abstract: The invention relates to a coating composition for the preparation of the base coat of a multilayer enamel consisting of at least one base and one transparent protective coat, the said coating composition containing binders based on organic resins, metallic pigments, organic solvents and, if appropriate, other pigments as well as customary additives and auxiliaries. The coating composition contains, as binders, (A) polyurethane elastomers and/or polyurea elastomers, (B) polyesters and (C) polycondensates partially etherified with monoalcohols and consisting of melamine, benzoguanamine and/or urea with formaldehyde. The invention further relates to a process for the preparation of coatings using the coating composition, and to a substrate coated with a multilayer enamel.
    Type: Grant
    Filed: September 14, 1984
    Date of Patent: March 18, 1986
    Assignee: BASF Farben & Fasern Aktiengesellschaft
    Inventors: Ulrich Poth, Hans-Dieter Hille
  • Patent number: 4565730
    Abstract: A coating composition, in particular for producing the transparent topcoat of a multilayer coating. The coating composition contains as binders two acrylic polymers, A and B, as well as aliphatic and/or cycloaliphatic polyisocyanates. Acrylic polymer A has a molecular weight of 800 to 4,000, a hydroxyl number of 80 to 180 and a glass transition temperature of below -10.degree. C. Acrylic polymer B has a molecular weight of 3,000 to 10,000, a hydroxyl number of 40 to 120 and a glass transition temperature of -10.degree. C. to +10.degree. C. Whereas in acrylic polymer A the proportion of acrylic acid esters predominates, polymer B contains methacrylic acid esters as predominant monomer components.
    Type: Grant
    Filed: June 14, 1984
    Date of Patent: January 21, 1986
    Assignee: BASF Farben & Fasern AG
    Inventors: Ulrich Poth, Fritz Bartol, Adolf Machholz
  • Patent number: 4558090
    Abstract: A water-dilutable coating agent for preparing the base layer of a multilayer coating. The coating agent contains pigments and optionally flow-control agents, thixotroping agents, fillers, organic solvents and other customary auxiliaries.
    Type: Grant
    Filed: October 2, 1984
    Date of Patent: December 10, 1985
    Assignee: BASF Farben & Fasern AG
    Inventors: Hermann-Josef Drexler, Franz Ebner, Hans-Dieter Hille, Ulrich Poth
  • Patent number: 4413036
    Abstract: A two-layer metal-effect coating, composed of a base layer which contains metal pigments and of a clear top coating, at least the base layer being obtained from a coating agent which contains as the film-forming binder a polymer resin which was obtained by copolymerizing olefinically unsaturated compounds, wherein the polymer resin is obtained by copolymerizing(a) 1.0 to 50.0% by weight of acrylonitrile, methacrylonitrile or a mixture thereof(b) 0.1 to 10.0% by weight of a compound having 2 or more polymerizable olefinic double bonds;(c) 40.0 to 98.9% by weight of other copolymerizable compounds, and(d) up to 5% by weight cellulose ester; with the total amount of the components a, b, c and d being 100% by weight.
    Type: Grant
    Filed: October 29, 1981
    Date of Patent: November 1, 1983
    Assignee: BASF Farben & Fasern A.G.
    Inventors: Hermann-Josef Drexler, Ulrich Poth
  • Patent number: 4371667
    Abstract: A baking lacquer based on acrylate polymers in organic solvents, optionally with coloring pigments and/or fillers is disclosed. The layer is characterized by a combination of two acrylate polymers A and B, wherein acrylate polymer A is a copolymer of copolymerizable ethylenically unsaturated compounds possessing free carboxyl groups originating from copolymerized alpha, beta-ethylenically unsaturated carboxylic acids, a proportion of the free carboxyl groups being esterified with a glycerol radical, which also contains other fatty acid radicals attached by ester bonds, so that 0.5-3 moles of free alpha, beta-ethylenically unsaturated carboxylic acid and 0.
    Type: Grant
    Filed: June 2, 1981
    Date of Patent: February 1, 1983
    Assignee: BASF Farben & Fasern AG
    Inventors: Dieter Moller, Ulrich Poth
  • Patent number: 4315053
    Abstract: An article having a substrate and a multilayer coating composition adhered thereto. The multilayer coating has a pigmented base film and deposited on the base film is a transparent coating which has no intermixing and no intersolution between the base coating and the transparent coating. The transparent coating is a cross linking resin containing hydroxyl groups obtained by esterifying polycarboxylic acids with polyols.
    Type: Grant
    Filed: May 28, 1980
    Date of Patent: February 9, 1982
    Assignee: BASF Farben & Fasern AG
    Inventors: Ulrich Poth, Dieter Moller, Arnold Dobbelstein