IGM Omnirad 73 is a high-efficiency low-yellowing α-hydroxy ketone Type I free radical UV photoinitiator in the Omnirad series, designed for UV radiation curing systems. It can quickly decompose to generate free radicals when exposed to UV light, efficiently initiating the polymerization of acrylates and unsaturated oligomers. With prominent core advantages, excellent low-yellowing performance
High-efficiency Type I initiation - Fast free radical generation, high polymerization efficiency, fast curing speed, shortening construction cycle
Excellent low-yellowing performance - No obvious yellowing after curing, not easy to lose light after long-term use, suitable for high appearance scenarios
Multi-system compatibility - Compatible with various acrylate systems, suitable for solvent-based UV formulations, strong versatility
Liquid easy processing - Low viscosity liquid form, easy to add and disperse, no complex process adjustment needed
Benzene-free low-odor environmental protection - Benzene-free formula, extremely low odor, meets environmental compliance, suitable for sensitive scenarios
Water-based UV coatings - Water-based UV wood paints and plastic paints, uniform dispersion, strong adhesion and excellent water resistance of cured film
Printing ink field - Water-based screen and flexo inks, fast curing, high printing precision, suitable for various substrates
Plastic coating field - Water-based UV protective coatings for plastic surfaces, good fit, outstanding scratch resistance and weather resistance
Paper coating field - Water-based UV paper coatings, high efficiency curing, improving paper gloss and wear resistance, no residual odor
UV adhesive field - Water-based acrylate UV adhesives, high bonding strength, suitable for water-based bonding scenarios, environmentally friendly and non-irritating
| Brand | IGM (Omnirad® series) |
| Chemical Type | α-Hydroxy ketone Type I free radical UV photoinitiator |
| Chemical Composition | 2-Hydroxy-2-methyl-1-phenylpropan-1-one |
| CAS No | 7473-98-5 |
| Appearance (25℃) | Colorless to pale yellow transparent liquid |
| Purity | ≥99.0% |
| Molecular Weight | 164.20g/mol |
| Melting Point | -8℃ to -4℃ |
| Absorption Wavelength Range | 240-340nm (in methanol) |
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