Henkel Ag & Company, Kgaa

Basf Coatings Gmbh

Ute Herrmann

Sabine Holtschulte

Günther Ott

Konstantinos Markou

Dominik Stoll

Rolf Schulte

Sebastian Sinnwell

Ulrike Schmidt-Freytag

Guenther Ott

Katrin Wczasek

The invention relates to a method for producing a pigment paste and an electrocoat containing the paste, the past being made by mixing solid pigment particles with a grind resin in the presence of water and/or an organic liquid, wherein the grind resin includes a dispersion of core-shell particles in an epoxide prepolymer which is liquid at 20&#xb0; C. and the core-shell particles have a silicone core and a polymer shell.

Method for producing a pigment paste, aqueous electrocoat material, use thereof, method for cataphoretic electrocoating, and coated article

The present invention relates to an acidic aqueous particulate composition containing, in addition to iron(III) ions, fluoride ions and at least one water-insoluble, dispersed organic binder, a water-insoluble, dispersed oxide pigment with elevated resistance to agglomeration for the autophoretic deposition of organic-inorganic hybrid layers onto metal surfaces, the composition additionally containing at least one anionic wetting agent which comprises functional groups selected from sulfonates, phosphonates and/or carboxylates. The invention furthermore comprises the use of such a composition for the autodeposition of a film-forming organic-inorganic hybrid coating onto metal surfaces which are at least in part selected from surfaces, the main constituents of which are iron, zinc and/or aluminum.

Anionic wetting agents for stabilizing self-depositing compositions comprising oxidic pigments

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Wuppertal, Germany

Ute Herrmann