| 摘要 |
PCT No. PCT/JP92/01618 Sec. 371 Date Jul. 22, 1993 Sec. 102(e) Date Jul. 22, 1993 PCT Filed Dec. 10, 1992 PCT Pub. No. WO93/11880 PCT Pub. Date Jun. 24, 1993.A zinciferous plated steel sheet excellent in press-formability and corrosion resistance, which comprises: a steel sheet, a zinciferous plating layer formed on at least one surface of the steel sheet, a chromate film formed on the zinciferous plating layer, and a resin film formed on the chromate film. The resin film comprises a solvent-base thermosetting resin, a solid internal lubricant and a rust-preventive pigment. The solvent-base thermosetting resin comprises: (A) urethane prepolymer containing a hydroxyl group, and (B) at least one of a block polyisocyanate compound and an amino resin as a curing agent. The urethane prepolymer containing a hydroxyl group comprises: (a) at least one of polyether polyol, polyester polyol and polyether-polyester polyol, (b) an isocyanate compound, and (c) dihydric alcohol. The solid internal lubricant comprises a polyethylene resin, and the content ratio thereof is within a range of from 1 to 30 weight parts relative to 100 weight parts of a solid component in the solvent-base thermosetting resin. The rust-preventive pigment comprises at least one of a chromate compound or silica, and the content ratio thereof is within a range of from 3 to 30 weight parts relative to 100 weight parts of the solid component in the solvent-base thermosetting resin.
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