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Products

Photoinitiators

Photoinitiators - Free Radical

With the widest variety of photoinitiators that upon exposure to UV light decomposes into free radicals that initiate a polymerization between diluting acrylates and acrylated oligomers, the free radical system is adopted for most applications. IGM offers a broad portfolio of free radical photoinitiator products ranging from the alpha hydroxy ketone (Omnirad 481, Omnirad 73), alpha-amino ketone (Omnirad 4817 and Omnirad 248) and acylphosphine oxide (Omnirad TPO) family to benzophenones.

Omnirad 1000 | cas no. 7473-98-5 + 947-19-3 | Omnirad 73 (80%) + Omnirad 481 (20%)

Highly effective non-yellowing liquid photoinitiator used for UV-polymerisation of suitable resins especially suited to clear-formulations

Omnirad 248 | cas no. 119313-12-1 | 2-benzyl-2-(dimethylamino)-4'-morpholinobutyrophenone

Type 1 Photoinitaitor of the α-amino acetophenone class. It possesses a broad absorption in the UV-A region of the spectrum, giving it a high reactivity in pigmented systems

Omnirad 481 | cas no. 947-19-3 | 1-hydroxycyclohexyl-phenyl ketone

Highly efficient, non-yellowing photoinitiator used to initiate radical polymerization of unsaturated oligomers e.g. acrylates after exposure to UV light

Omnirad 4817 | cas no. 71868-10-5 | 2-methyl-1-[4-(methylthio)phenyl]-2-morpholinopropan-1-one

Highly efficient photoinitiator used to initiate radical polymerization of unsaturated oligomers e.g. acrylates, after exposure to UV light

Omnirad 4MBZ flakes | cas no. 134-84-9 | 4-methyl benzophenone

Effective Type II photoinitiator used, in combination with tertiary amine synergists, to initiate radical polymerization of unsaturated oligomers e.g. acrylates after exposure to UV light