Genocure CPK 1-Hydroxycyclohexylphenylketone Rahn Photo Initiators >> Synergists ADHESIVE >> Radiation Curing (UV/EB) Initiators synergists GENOCURE* CPK 1-Hydroxycyclohexylphenylketone Used in UV curing adhesives 1-Hydroxycyclohexylphenylketone. Used as an initiator in UV curing adhesives.