The present disclosure provides an aqueous binder composition for forming a sacrificial corrosion-protective coating, said composition being free of chromates and also preferably free of borates and molybdates. Said binder composition advantageously has a pH of less than 6 and comprises a binder, particles of at least one metal oxide and at least one metallic phosphate, said binder comprising a hydrolyzed organosilane oligomer. In addition, the proportion by weight of said particles of at least one metal oxide relative to the total dry weight of said binder composition is greater than or equal to 75%.

This invention relates to an epoxy resin composition and its application in marine maintenance and repair coating with improved overcoatability.

This invention relates to an epoxy resin composition and its application in marine maintenance and repair coating with improved overcoatability.

The present invention relates to a coating composition comprising at least one binder (A) comprising at least one polymeric resin (A1) and at least one crosslinking agent (A2), at least one anticorrosion pigment (B), and at least one organic solvent (C), where (B) is an alloy of Zn and Mg and optionally at least one further metal and/or semimetal, the coating composition having a pigment volume concentration (PVC) in a range from 5.0% to 25.0%, and comprising the anticorrosion pigment (B) in an amount in a range from 5.0 to 25.0 wt %, based on the total weight of the coating composition, to the use thereof for the at least partial coating of a metallic substrate with a primer coat, to a method for the at least partial coating of such a substrate with such a primer coat, to a substrate at least partially coated therewith, and to a component or article produced from such a substrate.

The present invention relates to a coating composition comprising at least one binder (A) comprising at least one polymeric resin (A1) and at least one crosslinking agent (A2), at least one anticorrosion pigment (B), and at least one organic solvent (C), where (B) is an alloy of Zn and Mg and optionally at least one further metal and/or semimetal, the coating composition having a pigment volume concentration (PVC) in a range from 5.0% to 25.0%, and comprising the anticorrosion pigment (B) in an amount in a range from 5.0 to 25.0 wt %, based on the total weight of the coating composition, to the use thereof for the at least partial coating of a metallic substrate with a primer coat, to a method for the at least partial coating of such a substrate with such a primer coat, to a substrate at least partially coated therewith, and to a component or article produced from such a substrate.

A water-based bonding primer composition and a method of applying the same onto a metallic surface prior to adhesive bonding. The bonding primer composition is a water-based dispersion containing water, one or more epoxy resins, one or more curing agents, a silane compound, a low amount of propylene carbonate (PC), and optional additives. The bonding primer composition can form substantially smooth films by spraying, and at the same time, meet environmental regulations and provide high bonding performance.

A water-based bonding primer composition and a method of applying the same onto a metallic surface prior to adhesive bonding. The bonding primer composition is a water-based dispersion containing water, one or more epoxy resins, one or more curing agents, a silane compound, a low amount of propylene carbonate (PC), and optional additives. The bonding primer composition can form substantially smooth films by spraying, and at the same time, meet environmental regulations and provide high bonding performance.

The present invention relates to a method for producing an anticorrosion coating, wherein (1) an anticorrosion primer comprising (A) at least one organic resin as binder and (B) at least one synthetic layered double hydroxide comprising organic anions is applied directly to a metallic substrate and (2) a polymer film is formed from the anticorrosion primer applied in stage (1),
the method being characterized in that the at least one synthetic layered double hydroxide (B) comprises at least one organic anion of the following formula (I): ##STR00001## where R.sub.1COO.sup., SO.sub.3.sup., R.sub.2/R.sub.3NH.sub.2, OH, H. The present invention relates, furthermore, to coated metallic substrates coated by the method of the invention. The present invention relates not least to the use of the anticorrosion primer for use in the method of the invention for improving the corrosion resistance of metallic substrates.

The present invention relates to a method for producing an anticorrosion coating, wherein (1) an anticorrosion primer comprising (A) at least one organic resin as binder and (B) at least one synthetic layered double hydroxide comprising organic anions is applied directly to a metallic substrate and (2) a polymer film is formed from the anticorrosion primer applied in stage (1),
the method being characterized in that the at least one synthetic layered double hydroxide (B) comprises at least one organic anion of the following formula (I): ##STR00001## where R.sub.1COO.sup., SO.sub.3.sup., R.sub.2/R.sub.3NH.sub.2, OH, H. The present invention relates, furthermore, to coated metallic substrates coated by the method of the invention. The present invention relates not least to the use of the anticorrosion primer for use in the method of the invention for improving the corrosion resistance of metallic substrates.