Transcription of Photoinitiators for UVCuring
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Photoinitiators for UVCuring
Ciba Specialty Chemicals Photoinitiators for UV Curing Key Products Selection Guide 2003. Coating Effects Value beyond chemistry Typical physical Chemical class Chemical identity Appearance Freezing point (FP, C) Specific UV/VIS. properties Melting point (MP, C) gravity Absorption peaks Photoinitiators Boiling point (BP, C) (water = 1) (nm) in methanol IRGACURE 184 -Hydroxyketone 1-Hydroxy-cyclohexyl- white to off-white MP 45 49 C 246, 280, 333. phenyl-ketone crystalline powder IRGACURE 500 -Hydroxyketone IRGACURE 184 (50 wt%), clear, pale yellow FP<0 C 250, 332. Benzophenone (50 wt%) liquid recrystallization below 18 C. DAROCUR 1173 -Hydroxyketone 2-Hydroxy-2-methyl-1- clear, light liquid at room temp.
200 220 240 260 280 300 320 340 1.2 1.0 0.8 0.6 0.4 0.2 0.0 Key products, surface cure Absorption Spectra 0.001% (Acetonitrile) Wavelength (nm) Absorbance IRGACURE 184 DAROCUR 1173 IRGACURE 754 IRGACURE 2959 200 220 240 260 280 300 320 340 360 380
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