Abstract
The reaction properties of the styrene-acryl resin and polycarbodiimide in water based gravure ink were characterized by FTIR(Fourier Transform Infrared Spectroscopy) and XPS(X-ray Photoelectron Spectroscopy). The reaction rate of the mixed resins was determined by the FTIR. The surface property of the mixed resins was investigated by the XPS. The uncross-linking carboxyl groups increased on the surface as it air dried, because the styrene-acryl resin migrated to the surface side during the drying process. It was determined that the linkage reaction of carbodiimide not only effected alkali-resistance, but the uncross-linking carboxyl groups on the surface layer also had a harmful influence upon alkali-resistance when air-dried.
