Preparation and application of IR-813 p-toluene sulfonate_Kain Industrial Additive

Background and overview[1-2] IR-813 p-toluenesulfonate is a cyanine dye and an infrared absorber. There are reports in the literature that IR-813 p-toluene sulfonate can be used to prepare a positive-working infrared sensitive composition with good resistance to solvents and printing room chemicals. Preparation[1] IR-813 p-toluenesulfonate is compound 3a in the picture above. The preparation method…