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1. (WO2010114135) PRECOATED METAL SHEET AND PROCESS FOR PRODUCING SAME

Pub. No.:    WO/2010/114135    International Application No.:    PCT/JP2010/056106
Publication Date: Fri Oct 08 01:59:59 CEST 2010 International Filing Date: Tue Mar 30 01:59:59 CEST 2010
IPC: B05D 7/14
B05D 1/36
Applicants: NIPPON STEEL CORPORATION
新日本製鐵株式会社
HOSOKAWA, Tomoaki
細川智明
UEDA, Kohei
植田浩平
Inventors: HOSOKAWA, Tomoaki
細川智明
UEDA, Kohei
植田浩平
Title: PRECOATED METAL SHEET AND PROCESS FOR PRODUCING SAME
Abstract:
A precoated metal sheet having at least a topcoat layer that is a coating film formed as the uppermost layer and an intercoat layer that is a coating film underlying and adjoining the topcoat layer. The topcoat layer is a clear coating film comprising a silicone-grafted acrylic resin but containing no pigment. The intercoat layer comprises a melamine-cured or isocyanate-cured polyester resin and contains a coloring pigment. The coating film surface has an average coefficient of friction of 0.08 or lower, a hardness at 23ºC of 75-200 N/mm2 in terms of universal hardness measured under a load of 5 mN, and a specular gloss of 50% or more when measured at an incidence angle of 20º and a receiving angle of 20º. The precoated metal sheet has appearance properties including gloss and clearly reflecting properties and has excellent mar resistance.