Darocur 1173 2-Hydroxy-2-methyl-1-phenyl-propan-1-one 7473-98-5 Ciba Photo Initiators Acrylics/ Acrylates ADHESIVE >> Radiation Curing (UV/EB) 2-Hydroxy-2-methyl-1-phenyl-propan-1-one DAROCUR 1173 is a versatile highly efficient liquid photoinitiator which is used to initiate the photopolymerisation of chemically unsaturated prepolymers - e.g. acrylates - in combination with mono- or multifunctional monomers. DAROCUR 1173 may be used after adequate testing for applications such as UV curable clear coatings based on acrylates for paper, metal and plastic materials. As a liquid UV curing agent with excellent compatibility, DAROCUR 1173 is especially easy to incorporate. It is therefore highly suitable for blends with other photoinitiators. DAROCUR 1173 is especially recommended when UV coatings are required to exhibit only minimal yellowing even after prolonged exposure to sunlight. Yellowing of urethane acrylates may be further reduced by addition of Ciba’ hindered amine light stabilizer TINUVIN® 292. 2-Hydroxy-2-methyl-1-phenyl-propan-1-one. Used as a photoinitiator to initiate the photopolymerisation of chemically unsaturated prepolymers in combination with mono- or multifunctional monomers. May be used for UV curable applications. Possesses very good compatibility and easy incorporation. Can be used with other photoinitiators and hindered amine light stabilizer. Use level: 2.0-4.0% for film thickness of 5-20 microns. 1.0-3.0% for film thickness of 20-200 microns.