"The photoinitiator TPO is a highly efficient free radical (1) type photoinitiator that absorbs in the long wavelength range. Due to its wide absorption range, its effective absorption peak is 350~400NM, and it continues to absorb to about 420NM. Its absorption peak is longer than that of conventional initiators. After exposure to light, it can generate two free radicals, benzoyl and phosphoryl, which can both initiate polymerization. Therefore, the photocuring speed is fast. It also has a photobleaching effect, suitable for thick film deep curing and coating non-yellowing characteristics. It has low volatility and is suitable for water-based.

Application areas:

Mostly used in white systems, can be used for UV-curing coatings, printing inks, UV-curing adhesives, optical fiber coatings, photoresists, photopolymer printing plates, stereolithographic resins, composite materials, dental fillings, etc."