Basf Coatings Gmbh

Basf Aktiengesellschaft

Basf Se Corporation

Basf Coatings Ag

Bernhard Steinmetz

Hardy Reuter

Peter Hoffmann

Michael Matura

Nadia Luhmann

Matthias Blohm

Andreas Poppe

Norbert Loew

Rainer Dyllick-Brenzinger

Matthias Bratz

Günter Oetter

Peggy Jankowski

Dirk Eierhoff

Antje Ziemer

Ludwig Voelkel

Wolfgang Schrof

Harald Keller

Stephan Schwarte

Guenter Oetter

Norbert Wagner

Sebastian Koltzenburg

Winfried Mayer

Volker Frenz

Norbert Löw

Martin Beck

Cordula Mock-Knoblauch

Michael De Marco

Jorn Lavalaye

Susanne Petrovic

Ludwig Völkel

Monika Medelnick

Jörg Schröder

Holger Krumm

Bianca Goeb

Carsten Teichmann

Thomas Zihang

Stephanie Pei Yii Goh

Matthias Schad

Bianca Gob

Frank Jansing

Peter W Carrico

Dominik Stoll

Anna Kowalski

Stephan Lehmann

Joachim Hadeler

Joerg Schroeder

Ingo Luer

Werner Goedel

Ernst Jürgen Bauer

Michael Wohlfarth

Klaus Eikelmann

Bianca Göb

Katrin Deller

Vernon Adey

Michael Demarco

Gerd Hückmann

Berthold Deppisch

Elke Röhr

Michaela Ebert

Elisabeth Selzer

Philipp Fieber

Disclosed herein is an aqueous coating composition including an anionically stabilized binder, a color pigment, a polycarboxylic acid, and optionally a solvent. Further disclosed is a method for producing an aqueous coating composition by adding a solution of polycarboxylic acid in a solvent to a coating composition including an anionically stabilized binder and color pigment. Additionally disclosed is a method for producing a multicoat paint system by producing a basecoat layer or at least two directly consecutive basecoat layers directly on a substrate optionally coated with a first coating layer, producing a clearcoat layer directly on the basecoat layer or the topmost basecoat layer, and jointly curing the basecoat layer(s) and the clearcoat layer. At least one of the basecoat materials includes the aqueous coating composition disclosed herein and/or an aqueous coating prepared by the disclosed method. A multicoat paint system obtainable by the method is additionally disclosed.

Aqueous polycarboxylic acid containing coating composition with improved leveling properties

The present invention relates to a pigmented aqueous basecoat material comprising a polyether-based reaction product which is preparable by reaction of (a) at least one cyclic carboxylic anhydride comprising a free carboxylic acid group and/or the halide of a carboxylic acid group with (b) at least one polyether of the general structural formula (I) in which R is a Cto Calkylene radical and n is selected accordingly such that the polyether (b) possesses a number-average molecular weight of 800 to 4000 g/mol, the components (a) and (b) being used in the reaction in a molar ratio of 0.7/2.3 to 1.6/1.7 and the resulting reaction product possessing an acid number of 10 to 50 mg KOH/g.

Carboxy-functional, polyether-based reaction products and aqueous basecoat materials comprising the reaction products

The present invention relates to an aqueous polyurethane-polyurea dispersion (PD) having polyurethane-polyurea particles, present in the dispersion, having an average particle size of 40 to 2000 nm, and having a gel fraction of at least 50%, obtainable by The present invention also relates to basecoat materials comprising the dispersion (PD), and to multicoat paint systems produced using the basecoat materials.

Method of preparation of aqueous polyurethane-polyurea dispersion and aqueous base paint containing said dispersion

Described herein is a method of using organic carboxylic acids having 1 to 10 carbon atoms in preparation of aqueous basecoat materials for the purpose of improving the adhesion of the aqueous basecoat materials to overbaked clearcoat materials. Also described herein is a method for producing a muilticoat paint system, where a basecoat material is applied directly to an overbaked clearcoat film.

Use of low-molecular carboxylic acids in aqueous base coats

Provided herein is a pigmented aqueous basecoat material including an aqueous polyurethane-polyurea dispersion (PD) having polyurethane-polyurea particles present in the dispersion, an average particle size (volume average) of 40 to 2000 nm, and a gel fraction of at least 50 wt %. The polyurethane-polyurea particles, in each case in reacted form, include: at least one polyurethane prepolymer containing isocyanate groups and including anionic groups and/or groups which can be converted into anionic groups, and at least one polyamine comprising two primary amino groups and one or two secondary amino groups. The aqueous basecoat material includes a specific solvent composition. Also provided herein is a method of using basecoat materials including the dispersion (PD) and multicoat paint systems produced using the basecoat materials.

Aqueous base paints containing cross-linked polyurethane binders and a special solvent composition

Provided herein is a cleaning composition including: from 20 to 90% by weight of dimethyl sulfoxide, from 5 to 30% by weight of at least one mineral oil (M), and from 5 to 50% by weight of at least one bipolar organic solvent (L). The ranges of proportions indicated are in each case based on the total weight of the cleaning composition. Also provided herein is a method of cleaning components by employing the cleaning composition, and also the cleaned components themselves.

Cleaning composition

The present invention relates to a reaction product preparable by reacting 

Dimer fatty acid-containing reaction product and coating composition comprising the reaction product

Described herein is a method for producing a coating system on a substrate, including producing a cured basecoat film on the substrate by applying a pigmented aqueous basecoat material to the substrate and subsequently curing the basecoat material, wherein the basecoat material includes a polyether-based reaction product which is preparable by reaction of in which

Method for producing a coating system with an aqueous basecoat

Described herein is a method of using aromatic and/or araliphatic carboxylic acids in preparation of aqueous basecoat materials for the purpose of improving the adhesion of the aqueous basecoat materials to overbaked clearcoat materials. Also described herein is a method for producing a multicoat paint system, where a basecoat material is applied directly to an overbaked clearcoat film.

Provided herein is a pigmented aqueous basecoat material including a hydroxy-functional polyether-based reaction product that is prepared by a urethane group-forming reaction of: R is a Cto Calkylene radical, and n is selected accordingly such that a polyether (b) possesses a number-average molecular weight of 500 to 5000 g/mol,the components (a1) and (a2) being used in a molar ratio of 1.8/1.7 to 3.0/1.0, and the resulting component (a) having an isocyanate content of 0.5 to 10.0% with (b) at least one organic polyol.

Hydroxy-functional polyether-based reaction products and aqueous base paint which contains the reaction products

The present invention relates to a pigmented aqueous basecoat material comprising a polyether-based reaction product which is preparable by reaction of (a) at least one cyclic carboxylic anhydride comprising a free carboxylic acid group and/or the halide of a carboxylic acid group with (b) at least one polyether of the general structural formula (I) in whichR is a Cto Calkylene radical and n is selected accordingly such that the polyether (b) possesses a number-average molecular weight of 800 to 4000 g/mol, the components (a) and (b) being used in the reaction in a molar ratio of 0.7/2.3 to 1.6/1.7 and the resulting reaction product possessing an acid number of 10 to 50 mg KOH/g.

The present invention relates to a dimer fatty acid/dimer diol reaction product which is preparable by reacting (a) dimer fatty acids with (b) at least one dimer diol, where components (a) and (b) are used in a molar ratio of 0.7/2.3 to 1.3/1.7 and the resulting dimer fatty acid/dimer diol reaction product possesses a number-average molecular weight of 1200 to 5000 g/mol and an acid number &#x3c;10 mg KOH/g. The invention further relates to a pigmented aqueous basecoat material which comprises this dimer fatty acid/dimer diol reaction product, and also to the use of said dimer fatty acid/dimer diol reaction product in pigmented aqueous basecoat materials. It relates, further, to a method for producing multicast paint systems, and also to the multicoat paint systems producible by means of said method. The present invention relates, furthermore, to the refinishing of defects on multicoat paint systems.

Dimer fatty acid/dimer diol reaction product and use thereof in coating materials

Aqueous polyurethane-polyurea dispersion and aqueous base paint containing said dispersion

An aqueous basecoat material with improved circulation line stability is disclosed. The aqueous basecoat material includes at least one hydroxyl-functional polymer as a binder component and at least one binder component which is different from the hydroxyl-functional polymer. The aqueous basecoat material also includes at least one carbonyl group-containing polyurethane poly(meth)acrylate and also at least one organic compound having at least two hydrazine, hydrazide and/or hydrazone groups. The aqueous basecoat material also includes at least one branched and/or secondary aliphatic monoalcohol having at least four carbon atoms.

Aqueous base coats having an improved ring line stability

A pigmented aqueous basecoat material is disclosed. The pigmented aqueous basecoat material includes a polyether-based reaction product which is preparable by a reaction of trimesic acid with at least one polyether of the general structural formula (I) R is a Cto Calkylene radical and n is selected accordingly such that the at least one polyether possesses a number-average molecular weight of 500 to 5000 g/mol. The trimesic acid and the at least one polyether are used in the reaction in a molar ratio of 0.7/2.3 to 1.6/1.7 and the resulting reaction product possesses an acid number of 10 to 50 mg KOH/g.

Carboxy-functional polyether-based reaction products and aqueous base coats containing the reaction products

Growing community of inventors

Ruetschenhausen, Germany

Bernhard Steinmetz