Anticorrosive primer composition

An anticorrosive primer composition comprising:

• (1) 100 parts by weight of an epoxy resin having a number-average molecular weight of from 500 to 10,000, wherein the epoxy resin is selected from the group consisting of glycidyl ethers, glycidyl esters, glycidylamines, linear aliphatic or alicyclic epoxides, and acrylate-modified epoxy resins or urethane-modified epoxy resins,
• (2) from 10 to 60 parts by weight of an aromatic polyamine having at least two primary or secondary amine groups and containing from 2% to 30% by weight, based on the aromatic polyamine, of a promoter selected from the group consisting of phenol compounds and cresol compounds,
• (3) from 10 to 60 parts by weight of a polyisocyanate which is non-blocked or blocked with a blocking agent having a release-initiating temperature of below 160.degree. C.,
• (4) from 10 to 40 phr, based on the sum of components (1), (2), and (3), of silica particles of colloidal silica or fumed silica or a mixture of these,
• (5) from 0.5 to 5 phr, based on the sum of components (1), (2), and (3), of a lubricant,
• and an organic solvent.