IGM Omnirad 481 is a high-efficiency Type I free radical UV photoinitiator of α-hydroxy ketone 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 diluted acrylates and acrylate oligomers. Benzene-free, low-odor and excellent in non-yellowing performance, it has strong adaptability, an optimal high-efficiency curing additive for printing inks, wood coatings, plastic coatings and other scenarios
High-efficiency α-hydroxy ketone initiation - Type I initiation mechanism, fast free radical generation, high polymerization efficiency and fast curing speed
Excellent non-yellowing performance - The yellowing degree of the cured coating is extremely low, suitable for scenarios with high appearance requirements
Benzene-free low-odor environmental protection - Benzene-free formula, extremely low odor, meets high-end environmental compliance, suitable for sensitive scenarios
Multi-system compatibility - Compatible with various acrylate systems, suitable for solvent-based and water-based UV curing formulations
Easy processing and mixing - Solid powder easy to store, add and mix, no complex process adjustment needed
Printing ink field - Offset, screen, flexo inks and overprint varnishes, fast curing, high printing precision
Wood coating field - Wood UV varnishes/coatings, non-yellowing, improving wood decoration texture and durability
Plastic coating field - UV protective coatings for plastic surfaces, good fit, excellent scratch and weather resistance
Paper coating field - Paper UV curing coatings, high efficiency curing, improving paper surface gloss and wear resistance
UV adhesive field - Acrylate-based UV adhesives, high bonding strength and fast curing speed
| Brand | IGM (Omnirad® series) |
| Chemical Type | Type I free radical UV photoinitiator of α-hydroxy ketone |
| Alias | 1-Hydroxycyclohexyl-phenyl ketone, Photoinitiator 184, UV-184 |
| CAS No | 947-19-3 |
| Appearance (25℃) | White crystalline powder |
| Purity | ≥98.0% |
| Melting Point | 47-50℃ |
| Absorption Wavelength Range | 240-350nm (in methanol) |
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