Sinocure®184 is high-efficiency free radical type I photoinitiator, easily soluble in organic solvents and monomers. It has high photoinitiation activity, excellent thermal stability and no yellowing. It is used to initiate unsaturated prepolymerization systems. UV polymerization, such as: acrylic resin and monofunctional and multifunctional vinyl monomers. The absorption wavelength is 333nm, the reference dosage is 2% to 4%, and the curing time is 190s and 140s, respectively.