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

IGM Omnirad 819DW UV Photoinitiator

IGM Omnirad 819DW is a water-dispersible bis-acylphosphine oxide Type I free radical UV photoinitiator in the Omnirad® series, designed for UV radiation curing systems. Its core component is a water dispersion of 45% bis-acylphosphine oxide (BAPO). It can efficiently decompose to generate free radicals under UV light, quickly initiating the polymerization of acrylates and unsaturated oligomers

  • igm omnirad 819dw
  • igm omnirad 819dw

Features Of IGM Omnirad TPO-L UV Photoinitiator

  1. High-efficiency Type I initiation - Acylphosphine oxide structure, high free radical initiation efficiency and excellent deep curing effect

  2. Easy liquid processing - Clear yellow liquid, easy to add, good fluidity, accurate measurement, suitable for continuous production

  3. Low-yellowing and weather resistance - No obvious yellowing after curing, excellent weather resistance, better than traditional TPO, suitable for high appearance scenarios

  4. Broad-spectrum compatibility - Compatible with solvent-based and water-based UV systems, soluble in various coating solvents and UV monomers

  5. Excellent compounding performance - Can be compounded with various photoinitiators to optimize curing performance, suitable for transparent, pigmented and other formulations

Typical Applications Of IGM Omnirad TPO-L UV Photoinitiator

  1. UV ink field - Offset, screen, flexo inks, suitable for wood, metal, plastic and other substrates, high printing precision

  2. Coating field - Wood, metal, plastic UV coatings, uniform curing, improving coating wear resistance and decorativeness

  3. Adhesive field - Universal UV curing adhesives, suitable for paper, optical fiber and other substrates, high bonding strength

  4. 3D printing field - 3D printing photocurable resins, high initiation efficiency, improving printing molding speed and precision

  5. Optical fiber coating field - UV protective coatings for optical fiber surfaces, fast curing, good fit and excellent protective performance

Specifications Of IGM Omnirad TPO-L UV Photoinitiator

Appearance (25°C)Clear yellow liquid
Purity≥95.0%
Molecular Weight316.33 g/mol
Absorption Wavelength Range299nm, 366nm (characteristic peaks in methanol solution)
Solubility (20°C)Soluble in acetone, toluene, acrylate monomers; suitable
Density (20°C)1.1 g/cm³
Flash Point (CC)>100°C


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