Abstract: The present disclosure relates to the application of anti-corrosion coatings for a ferrous substrate. The first coating applied to the ferrous substrate is an electrocoat composition comprising electrically conductive pigments. A dried a cured coating layer of the first electrocoat composition provides the basis for a second electrocoat composition.

Abstract: Disclosed herein is a method to apply waterborne primer, basecoat and clearcoat compositions in a wet-on-wet manner followed by the curing of all three applied compositions to form a durable protective coating on a substrate. The primer composition comprises (meth)acrylic latex, polyurethane resin, melamine and, optionally, polyesters.

Abstract: A crosslinking component for electrocoat compositions is provided. The crosslinking component contains a blocked polyisocyanate. The blocked polyisocyanate includes at least three blocked isocyanate groups. A blocking agent for the blocked polyisocyanate contains from about 25 to about 75 mol % alcohols (A) comprising 4 carbon atoms or less, and from about 25 to about 75 mol % alcohols (B) comprising 5 carbon atoms or more and containing one or more ether groups. An electrocoat composition containing the crosslinking component and a process for forming a layer of an electrocoat composition on a surface of a substrate also are provided.

Abstract: The present disclosure relates to the application of anti-corrosion coatings for a ferrous substrate. The first coating applied to the ferrous substrate is an electrocoat composition comprising electrically conductive pigments. A dried a cured coating layer of the first electrocoat composition provides the basis for a second electrocoat composition.

Abstract: A pigment dispersing resin is disclosed along with pigment dispersion, electrodepositable coating compositions using the pigment dispersing resin, and methods for applying the electrodepositable coating composition. The pigment dispersing resin consists essentially of the carboxylic acid salt of an aminated bisphenol epoxy resin and an alkoxylated styrenated phenol. Pigment dispersions made from the dispersing resin are especially useful for forming low or no volatile organic content electrocoating baths.

Abstract: Disclosed herein is a method to apply waterborne primer, basecoat and clearcoat compositions in a wet-on-wet manner followed by the curing of all three applied compositions to form a durable protective coating on a substrate. The primer composition comprises (meth)acrylic latex, polyurethane resin, melamine and, optionally, polyesters.

Abstract: A pigment dispersing resin is disclosed along with pigment dispersion, electrodepositable coating compositions using the pigment dispersing resin, and methods for applying the electrodepositable coating composition. The pigment dispersing resin consists essentially of the carboxylic acid salt of an aminated bisphenol epoxy resin and an alkoxylated styrenated phenol. Pigment dispersions made from the dispersing resin are especially useful for forming low or no volatile organic content electrocoating baths.

Abstract: Self-lubricating is provided for cathodic electrodeposited coatings by including in the coating bath fine particles of polytetrafluoroethylene that have been milled with a cationic polyepoxide resin.

Abstract: A pigment dispersant that is useful in a cathodic electrocoating composition is prepared by bringing into contact the following compounds: a cyclic alkylene urea amine, a polyepoxide and a dialkanol amine; this pigment dispersant has an advantage of allowing for the high pigment to binder ratios and minimizes the volatile organic content (VOC) in the electrocoating composition.

Abstract: A pigment dispersant useful in cathodic electrocoat compositions is disclosed. The pigment dispersant is the reaction product of an organic monoepoxide or polyepoxide with a primary amine containing an imidazoline moiety. This pigment dispersant allows the maximazation of pigment to binder ratios and the minimization of volatile organic content (VOC) in electrocoat baths.

Abstract: A pigment dispersant that is useful in a cathodic electrocoating composition is prepared by bringing into contact compound (i), an alkylene carbonate, with a compound (ii) of the structure: ##STR1## where R is and alkyl group having 8-24 carbon atoms, and bringing the resulting reaction product of (i) and (ii) into contact with a half blocked organic diisocyanate; this pigment dispersant has an advantage of allowing for the maximization of pigment to binder ratios and the minimization of volatile organic content (VOC) in electrocoating compositions.

Abstract: A pigment dispersant useful in cathodic electrocoat compositions is disclosed. This pigment dispersant is the reaction product of alkylene carbonate and a primary amine containing an imidazoline moiety. This pigment dispersant allows the maximazation of pigment to binder ratios and the minimization of volatile organic content (VOC) in electrocoat baths.