IGM Omnirad TPO is a high-efficiency low-yellowing acylphosphine oxide Type I free radical UV photoinitiator in the Omnirad series (IGM Resins), designed for UV radiation curing systems. As a universal high-performance initiator, it can efficiently decompose to generate free radicals when exposed to UV light, quickly initiating the polymerization of unsaturated prepolymer systems such as acrylates and unsaturated polyesters
High-efficiency Type I initiation - Acylphosphine oxide structure, high free radical initiation efficiency, fast curing speed and excellent deep curing effect
Low-yellowing and weather resistance - No yellowing after curing, excellent weather resistance, not easy to lose light after long-term use, suitable for high appearance scenarios
Broad-spectrum compatibility - Suitable for acrylate and unsaturated polyester systems, compatible with water-based and solvent-based formulations, strong versatility
Good compounding synergism - Can be used in combination with various photoinitiators to optimize curing performance and reduce comprehensive formula cost
Easy solid control - Yellowish green crystalline solid, easy to weigh, store and transport, accurate addition and convenient processing
UV ink field - Offset, screen, flexo inks, suitable for wood, metal, plastic and other substrates, high printing precision
Coating field - Wood, metal, plastic UV coatings, uniform curing, improving coating wear resistance and decorativeness
Adhesive field - Universal UV curing adhesives, suitable for paper, optical fiber and other substrates, high bonding strength
3D printing field - 3D printing photocurable resins, high initiation efficiency, improving printing molding speed and precision
Optical fiber coating field - UV protective coatings for optical fiber surfaces, fast curing, good fit and excellent protective performance
| Brand | IGM (Omnirad® series, IGM Resins) |
| Chemical Type | Acylphosphine oxide Type I free radical UV photoinitiator |
| Chemical Composition | 2,4,6-Trimethylbenzoyl-diphenylphosphine oxide |
| CAS No | 75980-60-8 |
| EC Index Number | 278-355-8 |
| Appearance (25℃) | Yellowish green crystalline solid |
| Purity | ≥99.0% |
| Molecular Weight | 348.37g/mol |
| Melting Point | 90-95℃ |
| Absorption Wavelength Range | 300-420nm (in methanol |
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