Photoinitiator 819 is a versatile photoinitiator for radical polymerization of unsaturated resins upon UV and near visible light exposure. With the below three advantages,photoinitiator 819 has successfully solved the problems that often frustrate formulators:I.Good performance of curing pigmented formulations and in outdoor applications, it can be formulated with UV absorbers to gain good weather stability, while without harming the cure speed. II.Good through-curing of thick coating film. III.To give a clean white appearance in contrast to the off-white color associated withother long wavelength absorption photoinitiators. |