AQUEOUS DISPERSION LIQUID OF POLYURETHANE-(METH)ACRYLIC POLYMER MIXED RESIN, AQUEOUS COATING AGENT AND LAMINATE

摘要

PROBLEM TO BE SOLVED: To provide an aqueous dispersion liquid of a polyurethane-vinyl polymer mixed resin, which exhibits excellent adhesiveness to a resin base material such as ABS and allows a film (coating film) formed therefrom to have excellent tensile strength and excellent hardness (scratch hardness). SOLUTION: The aqueous dispersion liquid of the polyurethane-(meth)acrylic polymer mixed resin is obtained by dispersing polyurethane and a (meth)acrylic polymer in an aqueous medium. At least one of a constituent unit derived from the diol constituting the polyurethane and another constituent unit derived from the polyvalent isocyanate constituting the polyurethane has a cyclohexane ring and the content of the cyclohexane ring is≥2.5 moles per 1 kg polyurethane. The glass transition temperature (Tg) of the (meth)acrylic polymer is 50-160°C. COPYRIGHT: (C)2010,JPO&INPIT