IGM Omnirad 659 is a high-efficiency α-hydroxy ketone Type I free radical UV photoinitiator in the Omnirad series, designed for UV radiation curing systems. Focusing on water-based and solvent-based UV curing needs, it can quickly decompose to generate free radicals when exposed to UV light, efficiently initiating the polymerization of acrylate oligomers and monomers. With excellent compatibility in water-based systems, it is benzene-free
High-efficiency Type I initiation - α-hydroxy ketone structure, fast free radical generation, high polymerization efficiency and fast curing speed
Excellent water-based compatibility - Designed specifically for water-based systems, good dispersibility, no additional compatibilizer needed, suitable for various water-based UV formulations
Full-system adaptation - Compatible with water-based and solvent-based UV curing systems, strong versatility, no separate formula adjustment needed
Liquid easy processing - Low viscosity liquid form, easy to add and disperse, can reduce formula viscosity and improve processing efficiency
Benzene-free low-odor environmental protection - Benzene-free formula, extremely low odor, meets high-end 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 |
| CAS No | 106797-53-9 |
| Appearance (25℃) | Colorless to pale yellow transparent liquid |
| Purity | ≥98.5% |
| Molecular Weight | 250.28g/mol |
| Melting Point | About -10℃ |
| Absorption Wavelength Range | 240-350nm (in methanol) |
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