| abstract |
PROBLEM TO BE SOLVED: To provide a self-emulsifying water-based polyurethane resin excellent in mixing stability with an anionic material, adhesion to a substrate, printing density and water resistance. SOLUTION: In the same molecule, a functional group composed of a carboxyl group and / or a sulfonyl group and a functional group having a cationic property are simultaneously provided, and both functional groups are chemically covalently bonded to the molecule. A self-emulsifying aqueous polyurethane resin, characterized in that the resin is dispersed and stabilized in the form of particles in water. [Selection figure] None |