Photoinitiator absorbs a certain wavelength ultraviolet (250-420nm) or visible light (400-800nm) energy, generating free radicals, or cations, etc., thereby initiating monomer polymerization and crosslinking curing compounds.

Photoinitiator Types

The full name of photoinitiator is UV curing photoinitiator, which can be divided into three categories:
1. Photoinitiator,
such as
2. Photosensitizer
Free radicals, such as BP, are formed by the hydrogen abstraction reaction and

3. Cationic photoinitiators,

such as

Selection guide

  1. Select appropriate photoinitiators according to the type of prepolymer and monomer.
  2. Food solubility and reactivity, less dosage and high triggering efficiency.
  3. Shall have a certain thermal stability, do not decompose below 85 ℃, should have long-term storage stability.
  4. It is better to use several photoinitiators in combination, which can initiate curing in different wavelength ranges, which is faster than a single photoinitiator.
  5. Photoinitiator is used in combination with amine accelerator EDAB.
  6. Small odor, no poison, no environmental pollution.
  7. Cheap and easy to get, low cost.

Photoinitiator 907

Photoinitiator Irgacure 907 Chemical information Chemical name: 2- Methyl-1-[4-(methylthio)phenyl]-2-morpholinopropanone-1 CAS Number: 71868-10-5 Chemical formula: C13H17NO2S Chemical structure Syonym name:  Irgacure 907, Omnirad 907 Properties: Appearance White powder Melting Point ℃ 73-76 Purity ≥99.0 Ash ≤0.1% Absorption Peak [nm] 231, 307 Features: Irgacure 184 is a highly efficient non-yellowing photoinitiator for inks, coating and adhesives application. low…

Photoinitiator 1173

Photoinitiator Irgacure Darocur 1173 Chemical information Chemical name: 2-Hydroxy-2-Methyl-Phenyl-Propane-1-one CAS Number: 7473-98-5 Chemical formula: C10H12O2 Chemical structure Synonym name:  Irgacure 1173, Darocur 1173, Omnirad 1173 Properties: Appearance Transparent yellow liquid Purity ≥98.0 Color ≤100 Transmission 425nm≥98.0% Absorption Peak [nm] 244, 278, 330 Features: Irgacure 1173 is a liquid non-yellowing photoinitiator. Good solvency properties makes it ideal…

Photoinitiator 184

Photoinitiator Irgacure 184 Chemical information Chemical name: 1-Hydroxycyclohexyl phenyl ketone CAS Number: 947-19-3 Chemical formula: C13H16O2 Chemical structure           Synonym name: Irgacure 184, Omnirad 184 Properties: Appearance White crystalline powder Melting Point ℃ 46-50 Purity ≥99.0 Ash ≤0.1% Transmission 425nm≥98.0%,500nm≥98.0% Absorption Peak [nm] 244, 280, 330 Features: Irgacure 184 is a highly…