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

IGM Omnirad TPO Photoinitiator固体

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

Features Of IGM Omnirad TPO Photoinitiator

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

  2. 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

  3. Broad-spectrum compatibility - Suitable for acrylate and unsaturated polyester systems, compatible with water-based and solvent-based formulations, strong versatility

  4. Good compounding synergism - Can be used in combination with various photoinitiators to optimize curing performance and reduce comprehensive formula cost

  5. Easy solid control - Yellowish green crystalline solid, easy to weigh, store and transport, accurate addition and convenient processing

Typical Applications Of IGM Omnirad TPO 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 Photoinitiator

BrandIGM (Omnirad® series, IGM Resins)
Chemical TypeAcylphosphine oxide Type I free radical UV photoinitiator
Chemical Composition2,4,6-Trimethylbenzoyl-diphenylphosphine oxide
CAS No75980-60-8
EC Index Number278-355-8
Appearance (25℃)Yellowish green crystalline solid
Purity≥99.0%
Molecular Weight348.37g/mol
Melting Point90-95℃
Absorption Wavelength Range300-420nm (in methanol


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