Fig. 4

FTIR spectra of two 2KWBPU coatings activated with water dispersible HDI isocyanurates, developed for conserving OPS by Calder; white topcoat (N9688A) from NCP using PU dispersion (PUD) as co-reactant and clear coat using polyacrylic dispersion (PAD) as co-reactant (Bayhydrol 2542, Bayer)