Photoinitiator TPO

Photoinitiator TPO is a highly efficient free radical type I  photoinitiator

that can absorb light within a long wavelength range.

With a wide absorption range, its effective absorption peak is between 350 and 400 nm,

and it can keep absorbing light up to approximately 420 nm.

Its absorption peak is longer than that of conventional initiators.

After being exposed to light, it can generate two free radicals,

namely benzoyl radical and phosphoryl radical, both of which can initiate polymerization.

Therefore, the photocuring speed is fast.
It also has a photobleaching effect, and is suitable for the deep curing of thick films

and the characteristic that the coating will not turn yellow. 

It has low volatility and is applicable to water-based systems.

Photoinitiator TPO is mostly used in white systems

and can be applied to UV-curable coatings, printing inks, UV-curable adhesives,

optical fiber coatings, photoresists, photopolymer printing plates,

stereolithography resins, composite materials, dental filling materials, etc.

As a photoinitiator, photoinitiator TPO is mainly used in screen printing inks,

lithographic printing inks, flexographic printing inks, and wood coatings. 

TPO can be completely cured on white or highly titanium dioxide pigmented surfaces. 

It is widely used in various coatings.

Due to its excellent absorption performance ,the coating will not turn yellow,

has a low post-polymerization effect, and leaves no residue.  

It can also be used in transparent coatings,

and is particularly suitable for products with low odor requirements.

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We have complete series of photoinitiators and other additives.

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