Title: Lubricating aqueous polyurethane resin composition, method for lubricating surface of zinc-plated steel sheet using same, and surface-treated steel sheet
Application Number: 200580008930 Application Date: 2005.01.24
Publication Number: 1934232 Publication Date: 2007.03.21
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C10M173/02;C08L75/04;B32B15/08;C23C26/00;C08G18/40;C10M107/02;C10M125/26;C10M149/14;C08L23/00;C10N20
Applicant(s) Name: Nippon Steel Corp. Address:
Inventor(s) Name:
Attorney & Agent: duancheng en tianxin
Abstract:
    Disclosed is an aqueous polyurethane resin composition for forming a coating film over a zinc-plated steel sheet which film is excellent in corrosion resistance, alkali resistance, coating adhesiveness and lubricity. The aqueous polyurethane resin composition contains (a) a polyurethane resin having a polyester skeleton part and a polyether skeleton part, a tensile strength at break of not less than 3.92 kN/cm
Time: 6