| 摘要 |
PROBLEM TO BE SOLVED: To provide an aqueous printing ink using an aqueous polyurethane resin which is excellent in resolubility of the ink and excellent in solubility at a low temperature, excellent in coating properties of the ink against various plastic film substrates, and has excellent weatherability, in an ink using water-alcohol as a solvent, and to provide a laminate.SOLUTION: An aqueous polyurethane resin uses a polyester polyol having a branch structure and having a molecular weight in a specific range and a polyether polyol at a specific ratio as a polymer polyol, and uses an organic diamine having hydroxyl groups in an amount in a specific range as an organic diamine. |
