by SpecialChem

Omnirad 819

Technical Datasheet | Supplied by IGM Resins

Omnirad 819 (Former Irgacure 819) by IGM Resins is a versatile photoinitiator for radical polymerization of unsaturated resins upon UV light exposure.

It is especially designed for white pigmented formulations, the curing of glass-fiber-reinforced polyester/styrene systems and for clear coats for outdoor use in combinations with light stabilizers.
It is suitable for surface, through and LED cure.
It is applicable for clear and water-based systems.
It exhibits an outstanding curing performance in highly opaque white and colored furniture coatings containing rutile titanium dioxide or colored pigments at low concentrations.
Due to its photo sensitivity at longer wavelengths, it can easily be used in combinations with UV absorbers, e.g., Omnistab UV 400.
It is therefore ideally suitable for use in weather-resistant UV-curable coatings.
The recommended addition level for clear acrylate and UPES/styrene coatings is 0.1-0.2% + 1.0-2.0% Omnirad 184, white acrylate and UPES/styrene furniture coatings is 0.5-1.0% + 1.0-2.0 % Omnirad 651, colored acrylate formulations is 0.5-1.0% + 1.0-2.0% Omnirad 184, white screen printing inks is 0.5-1.5% + 1.0-2.0% Omnirad 184 and glass-reinforced UPES/styrene prepregs is 0.2-0.4%.
It is used in wood, metal, plastic, paper and optical fibers as well as for printing inks.
Omnirad 819 has a shelf life of 36 months.

Compatiblity with other products

Find products that are predicted to be compatible with Omnirad 819.

This list of compatible products is generated out of estimated HSP values. A practical determination of these HSP values would provide higher certainty.
Learn more about Hansen Solubility Parameters (HSP) and their use in predictive formulation.

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Compatible Products Based on HSP Distance

HSP distance provides an indication of compatibility. It is based upon the “like seeks like” principle. The smaller the distance between ingredients, the more compatible they are predicted to be.

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