Patent Number: 8,877,833

Title: Self-precipitating aqueous particulate composition comprising pigment binder particles

Abstract: The present invention relates to an acidic, aqueous, particulate composition having a high stability with respect to agglomeration for autophoretic deposition of organic-inorganic hybrid layers on metal surfaces, comprising, in addition to iron(III) ions, fluoride ions and at least one dispersed organic binder (B), pigment-binder particles comprising a pigment portion and a binder portion (B), such that the binder (B) comprises a polymer of at least one monomer having acid groups and at least one polymerizable double bond. Likewise, the invention relates to the use of an aqueous dispersion comprising pigment-binder particles comprising a pigment portion and a binder portion (B) for the production of a self-depositing composition as well as a method for autophoretic deposition on metal surfaces.

Inventors: Droniou; Patrick (Colombes, FR), Markou; Konstantinos (Cologne, DE)

Assignee: Henkel AG & Co. KGaA

International Classification: C08K 3/10 (20060101); C08K 9/00 (20060101)

Expiration Date: 2019-11-04 0:00:00