TPO, a highly efficient free radical (1) type light, has a high-efficiency photoinitiator that absorbs over a long wavelength range, and it completely cures on a pigmented surface of white or high titanium dioxide. Due to its broad absorption range, its effective absorption peak is 350-400 nm, and its absorption is always around 420 nm. Its absorption peak is longer than conventional initiators, and it can generate two free radicals of benzoyl and phosphoryl after irradiation. Can initiate polymerization, so the photocuring speed, it also has a photobleaching effect, suitable for thick film deep curing and the coating does not yellow characteristics, with low volatility, suitable for water-based.

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