Kansai patents aqueous primer composition

July 24, 2012

WO 2012039217
Aqueous primer composition, method for forming multi layer coating and coated article (provides an aqueous primer composition capable of forming a coating which has excellent workability and corrosion resistance in the worked portion. The aqueous primer composition comprises a carbonyl group-containing modified epoxy resin (A), a crosslinking agent (B), and a rust preventive pigment (C), and is characterized in that the carbonyl group-containing modified epoxy resin (A) is produced by reacting an amine compound (a1) having a carbonyl group and at least one active hydrogen bonded to a nitrogen atom per molecule and an epoxy resin (a2) having two or more epoxy groups per molecule).