IGM Omnirad 81 is a high-efficiency compound benzophenone Type II free radical UV photoinitiator in the Omnirad series, designed for UV radiation curing systems. Scientifically compounded by benzophenone and 4-methylbenzophenone, it combines the advantages of both. It can efficiently decompose to generate free radicals when exposed to UV light, quickly initiating the polymerization of acrylates and unsaturated oligomers
Compound synergistic effect - Compounded by benzophenone and 4-methylbenzophenone, initiation efficiency is better than single component, more stable curing
Broad-spectrum UV absorption - Wide UV absorption range, suitable for various UV light sources, applicable to both colored and transparent systems
Multi-system compatibility - Suitable for solvent-based UV formulations, compatible with various acrylate systems, extremely versatile
Easy solid control - Crystalline solid form, easy to weigh, store and transport, accurate addition, no complex process needed
High cost-performance advantage - Controllable cost of compound formula, stable performance, balancing high efficiency and economy
Printing ink field - Offset, screen, flexo inks and overprint varnishes, fast curing, high printing precision
Wood coating field - Wood UV varnishes/colored paints, strong adhesion, improving wood decoration durability and gloss
Plastic coating field - UV protective coatings for plastic surfaces, excellent scratch resistance and weather resistance, good fit
Paper coating field - Paper UV curing coatings, high efficiency curing, enhancing paper surface wear resistance and gloss
UV adhesive field - Universal acrylate UV adhesives, high bonding strength, suitable for conventional bonding scenarios
| Brand | IGM (Omnirad® series) |
| Chemical Type | Compound benzophenone Type II free radical UV photoinitiator |
| CAS No | Confidential |
| Appearance (25℃) | White to off-white crystalline solid |
| Purity | ≥98.0% |
| Molecular Weight | Mixed molecular weight (Benzophenone 182.22g/mol |
| Melting Point | 70-78℃ |
| Absorption Wavelength Range | 250-350nm (in methanol) |
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