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Photoinitiator 184

Photoinitiator 184 is a high-performance Type I photoinitiator, chemically known as 1-Hydroxycyclohexyl Phenyl Ketone. It is widely used in UV-curable systems due to its fast curing speed, low yellowing, and excellent surface cure performance.

This product is commonly searched as Irgacure 184 and Omnirad 184, making it a key material for global UV formulation markets.

Photoinitiator 184 is an efficient free radical photoinitiator, featuring good compatibility, low volatility, good dispersion, low migration, excellent thermal stability, and high curing efficiency. Its unique high absorption and non-yellowing properties result in excellent curing speed and effect. It is suitable for acrylic ester, methacrylic ester systems, varnishes, inks, coatings, adhesives. The general dosage is 1-4%.

Key Advantages

  • Low yellowing – ideal for clear systems
  • Fast surface curing
  • Good compatibility with acrylates
  • Widely recognized industry standard

Applications of Photoinitiator 184:

  • Used in Uv-polymerized monomers and oligomers of acrylates with single or multiple functional groups.
  • Used for varnishes, plastic coatings, wood coatings, adhesives, offset printing inks, screen printing inks, flexographic printing inks, and electronic products.

Photoinitiator 184 vs Other Photoinitiators

ProductTypeFeature
184Type ILow yellowing, surface cure
1173Type ILiquid, better for inks
651Type IStrong curing but more yellowing

Technical Specifications

  • CAS No.:947-19-3
  • Chemical Name:1-hydroxycyclohexyl phenylmethyl ketone
  • Molecular Formula:C13H16O2
  • Molecular Weight:204.3
  • Other Name:Irgacure 184,Omnirad 184
  • Appearance: White crystal powder

Melting Point

44-48℃

Purity

≥99%

Loss On Drying

≤0.2%

Density

1.18g/cm3

Flash point

325.8℃

Absorption wavelength

244nm,280nm,330nm

Package: 

25KG cartons

Storage and Transportation:

  • Keep container tightly closed and dry and storage in cool place.
  • Attention should be paid to avoiding light during production, manufacturing, storage and transportation.
Is Photoinitiator 184 the same as Irgacure 184?

Yes, they refer to the same chemical product.

What is the main use of Omnirad 184?

Mainly used in UV coatings and inks.

Is Irgacure 184 suitable for clear coatings?

Yes, due to its low yellowing properties.

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