Hoechst Aktiengesellschaft

Vianova Resins, Inc.

Vianova Resins Gmbh & Co. Kg

Susanne Wehner

Achim Voelker

Gerd Walz

Michael Hoenel

Peter Ziegler

Markus A Schafheutle

Klausjoerg Klein

Klaus Kueper

Uwe Neumann

Joachim Zoeller

Hartmut Foedde

Heinz Klima

An aqueous coating composition useful as electro-deposition coatings includes (A') an aqueous dispersion of a resin (A) having functional groups which are reactive toward isocyanate, and (B') an aqueous, solvent-free dispersion of a solubilized masked polyisocyanate (B). The coating is cured by baking at a temperature which regenerates the isocyanate groups.

Aqueous coating compositions comprising curing agents which can be

Aqueous synthetic resin dispersions comprising (A) an ionic resin, based on aralkylated epoxy resins, (B) a blocked polyisocyanate and (C) a polymer of at least one olefinically unsaturated monomer which is capable of undergoing free-radical polymerization are useful, for example, as binders in processes of coating by electrodeposition.

Aqueous dispersion of ionic aralkylated epoxy resin and blocked

Cationic polyurethane-based polymer dispersions

Catalysts useful for the curing of, for example, cataphoretic deposition coating materials, including water-soluble bismuth compounds and an epoxy-amine adduct, the preparation of the bismuth compound involving acid being employed in a quantity such that there are less than 2 mol of dissociable protons per mole of bismuth.

Bismuth catalysts useful for curing of cataphoretic deposition coating

Polyesters obtained by reacting from 5 to 50 parts of at least one linear or branched, aliphatic or cycloaliphatic, at least dihydric alcohol, from 2 to 40 parts of at least one at least dibasic, aromatic carboxylic acid, from 0 to 40 parts of at least one 2-alkenyldicarboxylic anhydride, from 10 to 30 parts of at least one at least dibasic, linear or branched, aliphatic carboxylic acid, from 0 to 15 parts of an aliphatic, linear or branched hydroxy acid, from 0 to 15 parts of an aliphatic, linear or branched polyamine having at least one primary and at least one secondary or tertiary amino group, from 0 to 15 parts of a glycidyl ester of a branched, aliphatic monocarboxylic acid or of a glycidyl ether of a branched, aliphatic alcohol, and from 0 to 15 parts of polyhydroxyamine are useful, for example, as additives in coating compositions.

Polyesters and their use as additives in coating compositions

Solvent-free aqueous synthetic-resin dispersions comprising a polymer (A) which is obtained by polymerization of (A1) capped polyisocyanates in which some of the capping groups contain an ethylenically unsaturated group, and (A2) ethylenically unsaturated monomers in the presence of an ionic resin (B). The resin is useful in electrodeposition coatings.

Solvent-free aqueous synthetic-resin dispersion and process for the

These reaction products are suitable as catalysts with improved properties for curing coating binders.

Reaction products of dialkyltin oxide and polyhydric phenols

Reaction products of dialkyltin oxide and polyhydric phenols. These reaction products are suitable as catalysts with improved properties for curing coating binders.

An electrodeposition bath comprising a urethane of the formula

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Villmar, Germany

Susanne Wehner