Patents by Inventor Hans-Joachim Streitberger

Hans-Joachim Streitberger 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: 5849365
    Abstract: The invention relates to a method for the production and repair of multicoat special-effect coatings, in which the basecoats is produced exclusively by elecrostatic ?sic! spraying, a coating material with a specific rheological behavior is employed as the basecoats and the repair is carried out with the aid of a spray application process in which a spray jet is produced which is distinguished in thatat most 40% of the coating droplets passing a measurement point which lies at the center of the spray jet and 300 mm away from the nozzle have a diameter which is less than 20 .mu.m and at least 5% of the coating droplets have a diameter which is greater than 60 .mu.m,at least 20% of the coating droplets passing the measurement point have a speed which is less than 6 m/s and at most 30% of the coating droplets have a speed of more than 10 m/s, andthe coating droplets have a momentum which is equal to at least 4.times.10.sup.-5 g cm s.sup.
    Type: Grant
    Filed: June 6, 1998
    Date of Patent: December 15, 1998
    Assignee: BASF Lacke + Farben, AG
    Inventors: Heinz Topfel, Ewald Bischoff, Harry Libutzki, Jorge Wellmann, Dieter Herbst, Hans-Joachim Streitberger
  • Patent number: 5820986
    Abstract: The invention relates to a method for the production and repair of multicoat special-effect coatings, in which the basecoat is produced exclusively by elecrostatic spraying, a coating material with a specific rheological behavior is employed as the basecoat and the repair is carried out with the aid of a spray application process in which a spray jet is produced which is distinguished in thatat most 40% of the coating droplets passing a measurement point which lies at the center of the spray jet and 300 mm away from the nozzle have a diameter which is less than 20 .mu.m and at least 5% of the coating droplets have a diameter which is greater than 60 .mu.m,at least 20% of the coating droplets passing the measurement point have a speed which is less than 6 m/s and at most 30% of the coating droplets have a speed of more than 10 m/s, andthe coating droplets have a momentum which is equal to at least 4.times.10.sup.-5 g cm s.sup.
    Type: Grant
    Filed: February 18, 1997
    Date of Patent: October 13, 1998
    Assignee: BASF Lacke + Farben AG
    Inventors: Heinz Topfel, Ewald Bischoff, Harry Libutzki, Jorge Wellmann, Dieter Herbst, Hans-Joachim Streitberger
  • Patent number: 5281468
    Abstract: The present invention relates to a process in which1. a water-dilutable basecoat composition is applied which contains at least one water-dilutable binder, metallic pigments, if desired color pigments, if desired conventional auxiliaries and additives and up to 20% by weight of organic solvents,2. a polymer film is formed from this basecoat composition,3. a transparent topcoat containing a polymer containing silyl groups and obtainable by copolymerization of p1 p.sub.1) 0.1 to 40% by weight of ethylenically unsaturated silane monomers of the general formula ##STR1## where R.sup.1 is alkyl, aryl, acyl, aralkyl having 1 to 10 carbon atomsR.sup.2 is an organic radical having a polymerizable double bondX is a hydrolyzable groupn is 1, 2 or 3p.sub.2) 5 to 30 % by weight, preferably 8 to 25% by weight, of monomers having at least 2 polymerizable ethylenically unsaturated double bonds andp.sub.
    Type: Grant
    Filed: July 21, 1992
    Date of Patent: January 25, 1994
    Assignee: BASF Lacke + Farben Aktiengesellschaft
    Inventors: Konrad Klier, Hans-Joachim Streitberger
  • Patent number: 5236564
    Abstract: The invention relates to a process for the coating of electrically conducting substrates in which(1) the substrate is immersed in an aqueous electrocoating paint comprising at least one cathodically depositable resin,(2) the substrate is connected as cathode,(3) a film is deposited on the substrate using direct current,(4) the substrate is removed from the electrocoating paint and(5) the deposited paint film is baked.In this invention an electrically conducting substrate coated by a coating produced by plasma polymerization is employed as substrate.
    Type: Grant
    Filed: November 7, 1991
    Date of Patent: August 17, 1993
    Assignee: BASF Lacke + Farben Aktiengesellschaft
    Inventors: Jan Berg, Rainer Burstinghaus, Hans-Joachim Streitberger, Jurgen Hambrecht
  • Patent number: 5212981
    Abstract: The invention relates to a process and device for measuring the effective viscosity and the elastic properties of coatings. Known measuring processes and measuring devices based on the "rolling ball method" suffer from drawbacks, namely run formation and sinking of the relatively heavy solvent vapors, due to the inclination of the coated sheet metal. To overcome these drawbacks, rolling movements are imparted to a magnetizable ball (1) displaced from its rest position in a magnetic field, during movement of the horizontally disposed substrate, under the influence of the field gradient of a permanent magnet or electromagnet (4) located below the substrate. The rolling movements are used as the basis for the measurements.
    Type: Grant
    Filed: August 31, 1990
    Date of Patent: May 25, 1993
    Assignee: BASF Lacke & Farben AG
    Inventors: Martin Laun, Wolfgang Goring, Theodora Dirking, Hans-Joachim Streitberger
  • Patent number: 4482446
    Abstract: An aqueous dispersion based on an acid-protonized reaction product from(a) Mannich bases free from epoxide groups, from(a.sub.1) condensed phenols free from ether groups with at least two aromatic rings and with at least two phenolic hydroxyl groups and/or(a.sub.2) condensed phenols, containing ether groups, with at least two aromatic rings and at least one phenolic hydroxyl group(a.sub.3) secondary amines with at least one hydroxyalkyl group, possible in a mixture with(a.sub.4) secondary dialkylamines or dialkoxyalkylamines without free hydroxyl groups,(a.sub.5) formaldehyde or compounds splitting off formaldehyde, with(b) epoxide resins, aliphatic hydroxyl groups from (a) and/or (b) being converted at least in part into urethane groups possibly by reaction with partly blocked isocyanates,containing furthermore fine-particulates non-ionic plastics in dispersed form. The dispersion and/or the fine-particulate plastics furthermore may contain pigments and/or fillers.
    Type: Grant
    Filed: July 2, 1982
    Date of Patent: November 13, 1984
    Assignee: BASF Farben & Fasern A.G.
    Inventors: Hans-Joachim Streitberger, Peter Lessmeister, Norbert Zdahl
  • Patent number: 4361660
    Abstract: An aqueous dispersion based on an acid-protonized reaction product from(a) Mannich bases free from epoxide groups, from(a.sub.1) condensed phenols free from ether groups with at least two aromatic rings and with at least two phenolic hydroxyl groups and/or(a.sub.2) condensed phenols, containing ether groups, with at least two aromatic rings and at least one phenolic hydroxyl group(a.sub.3) secondary amines with at least one hydroxyalkyl group, possible in a mixture with(a.sub.4) secondary dialkylamines or dialkoxyalkylamines without free hydroxyl groups,(a.sub.5) formaldehyde or compounds splitting off formaldehyde, with(b) epoxide resins, aliphatic hydroxyl groups from (a) and/or (b) being converted at least in part into urethane groups possibly by reaction with partly blocked isocyanates,containing furthermore fine-particulate non-ionic plastics in dispersed form. The dispersion and/or the fine-particulate plastics furthermore may contain pigments and/or fillers.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: November 30, 1982
    Assignee: BASF Farben & Fasern AG
    Inventors: Hans-Joachim Streitberger, Peter Lessmeister, Norbert Zdahl
  • Patent number: 4199422
    Abstract: Method of cataphoretically coating the surfaces of electrically conducting substrates acting as cathodes in an electrical lacquering bath based on aqueous solutions and/or aqueous dispersions of salts of cationic film forming agents with organic and/or inorganic acids wherein the coating bath contains chloride ions dissolved therein with nitrate ions, nitrite ions, or a mixture of nitrate and nitrite ions in a weight ratio from about 0.01 to 8 parts of chloride ions to 1 part of nitrate ions, nitrite ions, or a mixture of nitrate and nitrite ions.
    Type: Grant
    Filed: November 20, 1978
    Date of Patent: April 22, 1980
    Assignee: BASF Farben & Fasern AG
    Inventors: Udo Strauss, Hans-Joachim Streitberger