| 摘要 |
PROBLEM TO BE SOLVED: To provide a water-borne coating agent having excellent low temperature film-forming ability without using a film-forming aid comprising an organic solvent, excellent in adhesiveness to a substrate, a polyester film in particular, and capable of forming a coating layer excellent in heat resistance, water resistance, solvent resistance, transparency, etc. SOLUTION: This water-borne coating agent comprises an aqueous dispersion obtained by dispersing in water a resin particle comprising a water-dispersible polyurethane resin containing 15-35 wt.% aromatic cyclic structural unit and a hydrophobic polyester polyol and/or a hydrophobic polyether polyol containing 20-50 wt.% of an aromatic cyclic structural unit each being liquid at normal temperature, and a crosslinker capable of reacting with a hydroxy group. COPYRIGHT: (C)2005,JPO&NCIPI
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