DAROCUR?1173General    DAROCUR?1173isaversatilehighlyefficientliquidphotoinitiatorwhichisusedtoinitiatethephotopolymerisationofchemicallyunsaturatedprepolymers-e.g.acrylates-incombinationwithmono-ormultifunctionalmonomers.ChemicalComposition2-Hydroxy-2-methyl-1-phenyl-propan-1-oneMolecularweight:164.2CASNo.7473-98-5AbsorptionSpectrum(%inAcetonitrile)PhysicalProperties   Appearance:colorlesstoslightlyyellowliquid                                   Odor:slight                                   Miscibility:inmostcommonorganicsolventsaswellasmost                                   acrylatebasedmonomersexceeds50g/100g;                                   practicallyinsolubleinwater.                                   Meltingpoint:4°C                                   Boilingpoint(at0.13mbar~0.1Torr):80-81°C                                   Flashpoint:>100°C                                   Density:1.08g/cm3Viscosity(at20°C):25mPa.sApplicationDAROCUR?1173maybeusedafteradequatetestingforapplicationssuchasUVcurableclearcoatingsbasedonacrylatesforpaper,metalandplasticmaterials.AsaliquidUVcuringagentwithexcellentcompatibility, DAROCUR?1173 isespeciallyeasytoincorporate.Itisthereforehighlysuitableforblendswithotherphotoinitiators.DAROCUR?1173 isespeciallyrecommendedwhenUVcoatingsarerequiredtoexhibitonlyminimalyellowingevenafterprolongedexposuretosunlight.YellowingofurethaneacrylatesmaybefurtherreducedbyadditionofCibaSpecialtyChemicalshinderedaminelightstabilizerTINUVIN?292.Theamountof  DAROCUR?1173requiredforoptimumperformanceshouldbedeterminedintrialscoveringaconcentrationrange.Recommendedconcentrations:filmthickness:5–20mm2.0–4.0%DAROCUR?1173filmthickness:20–2000mm1.0–3.0%DAROCUR?1173SafetyandHandlingDAROCUR?1173shouldbehandledinaccordancewithgoodindustrialpractice.DetailedinformationisprovidedintheSafetyDataSheet.广东省广州市光引发剂供应协宇1173光引发剂涂料