Product Introduction of 1-Hydroxycyclohexylphenylketone

⁣1-Hydroxycyclohexylphenylketone (184) is a novel and highly efficient photosensitive initiator introduced by Ciba Geigy, a Swiss company in the 1980s. Its product code is Irgacure 184 and its melting point ranges from 47 to 49 ℃. It is an efficient and yellowing resistant free radical (I) type solid photoinitiator with advantages such as long storage time, high initiation efficiency, and wide UV absorption range.


It is mainly used in conjunction with single or multi-functional vinyl monomers and oligomers for UV curing of unsaturated prepolymers (such as acrylic esters), especially suitable for coatings and inks with high yellowing requirements.