Genocure TPO 2,4,6-Trimethylbenzoylphenyl-phosphineoxide Rahn Photo Initiators >> Synergists ADHESIVE >> Radiation Curing (UV/EB) Initiators synergists GENOCURE* TPO 2,4,6-Trimethylbenzoylphenyl-phosphineoxide Used in UV curing adhesives 2,4,6-Trimethylbenzoylphenyl-phosphineoxide. Used as an initiator in UV curing adhesives.