Chemical name: (2,4,6-Trimethylbenzoyl)-bis(4-methylphenyl)phosphinyl oxide
CAS-No.: 270586-78-2
Sensitive Packing: Conditional
Type: I
LED: Yes
Curing: Depth
Peaks (nm): 275, 379

TPO-R is a highly efficient type I free radical photoinitiator, that is used for manufacturing formulations that can undergo rapid UV (LED) curing in various high-speed applications.

Curing of styrene-based unsaturated polyesters and acrylic resins, use in pigmented as well as non-pigmented formulations.

TPO-R can replace TPO in formulations and shows even higher curing efficiency and lower yellowing.

TPO-R Chemical Structure