Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

IGM Omnirad 500 Photoinitiator

IGM Omnirad 500 is a high-performance benzophenone-based photoinitiator from IGM Resins’ Omnirad series, designed for UV-curable inks, coatings and adhesives. It offers excellent surface cure, low migration, and compatibility with acrylate systems, enabling efficient free-radical polymerization under UVA light.
  • igm omnirad 500 photoinitiator_ed6d4c07
  • igm omnirad 500 photoinitiator_ed6d4c07

Features Of IGM Omnirad 500 Photoinitiator

  1. Highly efficient Type II photoinitiator based on benzophenone chemistry.

  2. Excellent compatibility with acrylate and methacrylate monomers and oligomers.

  3. Low yellowing tendency in cured films, supporting high optical clarity.

  4. Good thermal stability enabling extended shelf life under recommended storage conditions.

  5. Enables rapid surface cure under medium-pressure mercury lamp UV sources (320–420 nm).

Typical Applications Of IGM Omnirad 500 Photoinitiator

  1. UV-curable wood coatings for furniture and flooring.

  2. Industrial UV inks for packaging and label printing.

  3. Electronic encapsulants and conformal coatings.

  4. Optical adhesives and lens bonding formulations.

  5. 3D printing resins requiring balanced reactivity and low migration.

Specifications Of IGM Omnirad 500 Photoinitiator

Chemical TypeBenzophenone derivative
Product FormPowder
AppearanceOff-white to pale yellow crystalline powder
Primary ApplicationsUV-curable coatings, inks, adhesives
Key FeaturesType II photoinitiator, co-initiator dependent
BenefitsRapid surface cure, low volatility, good film hardness development
Recommended StorageCool, dry place below 25°C; protect from light and moisture
UV Absorption Maxima~345 nm (in ethanol)


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