Patent ID: 6203930
Filing Date: 2001-03-20
Classification: B05D,Y10T

Abstract:
A rust preventive coating formed on a surface of a substrate comprising iron, which comprises an undercoat layer of the following (1) and an overcoat layer of the following (2):(1) the undercoat layer obtained by coating the substrate with zinc by hot dipping, electroplating, penetration plating, thermal spraying or chemical plating, or a paint containing zinc dust; and(2) the overcoat layer obtained by coating the undercoat layer with a paint composition comprising (a) 100 parts by weight of an inorganic filler, (b) 5 to 30 parts by weight of a binder comprising a member selected from the group consisting at least one amine silicate and a mixture of at least one amine selected and at least one synthetic resin in terms of solid content, and (c) one member selected from the group consisting of 10 to 100 parts by weight of water and/or a hydrophilic organic solvent, and then, hardening said composition.